LIST OF PUBLICATIONS
● G. Várhegyi. Problems with the determination of activation energy as function of the reacted fraction from thermoanalytical experiments. J. Therm. Anal. Calorim. 2023, 148, 12835-12843. doi: 10.1007/s10973-023-12559-6 Supplementary Information Open access
● Várhegyi, G.; Wang, L.; Skreiberg, Ø. Kinetics of the CO2 gasification of woods, torrefied woods, and wood chars. Least squares evaluations by empirical models. J. Therm. Anal. Calorim. 2023, 148, 6439-6450. doi: 10.1007/s10973-023-12151-y Supplementary Information Open access
● Várhegyi, G.; Wang, L.; Skreiberg, Ø. Empirical kinetic models for the CO2 gasification of biomass chars. Part 1. Gasification of wood chars and forest residue chars. ACS Omega 2021, 6, 27552-27560. doi: 10.1021/acsomega.1c04577 Supporting Information Open access
● Babinszki, B.; Sebestyén,Z.; Jakab, E.; Kőhalmi, L.; Bozi, J.; Várhegyi, G.; Wang,L.; Skreiberg,Ø.; Czégény Zs. Effect of slow pyrolysis conditions on biocarbon yield and properties: Characterization of the volatiles. Biores. Techn. 2021 doi: https://doi.org/10.1016/j.biortech.2021.125567 Open access
● Babinszki, B.; Jakab, E.; Terjék, V.; Sebestyén, Z.; Várhegyi, G.; May, Z.; Mahakhant, A.; Attanatho, L.; Suemanotham, A.; Thanmongkhon, Y.; Czégény, Z. Thermal decomposition of biomass wastes derived from palm oil production. J. Anal. Appl. Pyrolysis, 2021, 155, 105069. Open access
● Várhegyi, G.; Wang, L.; Skreiberg, Ø. Empirical kinetic models for the combustion of charcoals and biomasses in the kinetic regime. Energy Fuels 2020, 34, 16302-16309 doi: 10.1021/acs.energyfuels.0c03248 Supporting Information Open access
● Várhegyi, G.; Wang, L.; Skreiberg, Ø. Non-isothermal kinetics: best-fitting empirical models instead of model-free methods. J. Therm. Anal. Calorim. 2020, 142, 1043-1054 doi: 10.1007/s10973-019-09162-z Supplementary Material Open access
● Várhegyi, G. Empirical models with constant and variable activation energy for biomass pyrolysis. Energy Fuels 2019, 33, 2348-2358. doi: 10.1021/acs.energyfuels.9b00040 Supporting info Open access
● Wang, L.; Li, T.; Várhegyi, G.; Skreiberg, Ø.; Løvås, T. CO2 Gasification of chars prepared by fast and slow pyrolysis from wood and forest residue. A kinetic study. Energy Fuels 2018, 32, 588-597. doi: 10.1021/acs.energyfuels.7b03333 Manuscript in repository
● Várhegyi, G.; Wang, L.; Skreiberg, Ø. Towards a meaningful non-isothermal kinetics for biomass materials and other complex organic samples J. Therm. Anal. Calorim. 2018, 133, 703-712. doi: 10.1007/s10973-017-6893-0 Manuscript in repository
● Barta-Rajnai, E.; Várhegyi, G.; Wang, L.; Skreiberg, Ø.; Grønli, M.; Czégény, Zs. Thermal decomposition kinetics of wood and bark and their torrefied products. Energy Fuels 2017, 31, 4024-4034. doi: 10.1021/acs.energyfuels.6b03419 Supporting info Repository
● Wang, L.; Barta-Rajnai, E.; Hu, K.; Higashi, C.; Skreiberg, Ø.; Grønli, M.; Czégény, Z.; Jakab, E.; Myrvågnes, V.; Várhegyi, G.; Antal, M.J.; Biomass Charcoal Properties Changes During Storage. Energy Procedia, 2017, 105, 830-835. doi: 10.1016/j.egypro.2017.03.397
● Várhegyi, G.: In Honor of Michael J. Antal. Energy Fuels 2016, 30, 7809-7810. doi: 10.1021/acs.energyfuels.6b02476 Repository
● Várhegyi, G.: From “sirups” to biocarbons. A 30 year cooperation research for better biomass utilization with Michael J. Antal, Jr. Energy Fuels 2016, 30, 7887-7895. doi: 10.1021/acs.energyfuels.6b00860 Repository
● Wang, L.; Várhegyi, G.; Skreiberg, Ø.; Li, T.; Grønli, M.; Antal, M. J.: Combustion characteristics of biomass charcoals produced at different carbonization conditions. A kinetic study. Energy Fuels 2016, 30, 3186-3197. doi: 10.1021/acs.energyfuels.6b00354 Supporting Info Repository
● Wang, L.; Várhegyi, G.; Skreiberg, Ø.: CO2 Gasification of torrefied wood. A kinetic study. Energy Fuels 2014, 28, 7582-7590. doi: 10.1021/ef502308e Supporting Info Repository
● Tapasvi, D.; Khalil, R.; Várhegyi, G.; Tran, K.-Q.; Grønli, M.; Skreiberg, Ø.: Thermal decomposition kinetics of woods with an emphasis on torrefaction. Energy Fuels 2013, 27, 6134-6145. doi: 10.1021/ef4016075 Repository
● Wang, L.; Sandquist, J.; Várhegyi, G.; Matas Güell, B.: CO2 Gasification of Chars Prepared from Wood and Forest Residue. A Kinetic Study. Energy Fuels 2013, 27, 6098-6107. doi: 10.1021/ef401118f Repository
● Tapasvi, D.; Khalil, R.; Várhegyi, G.; Skreiberg, Ø.; Tran, K.-Q.; Grønli, M.: Kinetic behavior of torrefied biomass in an oxidative environment. Energy Fuels 2013, 27, 1050-1060. doi: 10.1021/ef3019222 Supporting Info Repository
● Trninić, M.; Wang, L.; Várhegyi, G.; Grønli, M.; Skreiberg, Ø.: Kinetics of corncob pyrolysis. Energy Fuels 2012, 26, 2005-2013. doi: 10.1021/ef3002668 Repository
● Várhegyi, G.; Sebestyén, Z.; Czégény, Z.; Lezsovits, F.; Könczöl, S.: Combustion kinetics of biomass materials in the kinetic regime. Energy Fuels 2012, 26, 1323-1335. doi: 10.1021/ef201497k Supporting Info Repository
● Sebestyén, Z.; Lezsovits, F.; Jakab, E.; Várhegyi, G.: Correlation between heating values and thermogravimetric data of sewage sludge, herbaceous crops and wood samples. J. Therm. Anal. Calor. 2012, 110, 1501-1509, doi: 10.1007/s10973-011-2078-4
● Várhegyi, G.; Bobály, B.; Jakab, E.; Chen, H.: Thermogravimetric study of biomass pyrolysis kinetics. A distributed activation energy model with prediction tests. Energy Fuels 2011, 25, 24-32. doi: 10.1021/ef101079r Supporting Info Repository
● Várhegyi, G.; Czégény, Zs.; Liu, C.; McAdam, K.: Thermogravimetric analysis of tobacco combustion assuming DAEM devolatilization and empirical char-burnoff kinetics. Ind. Eng. Chem. Res. 2010, 49, 1591-1599. doi: 10.1021/ie901180d Supporting Info Repository
● Várhegyi, G.; Chen, H.; Godoy, S.: Thermal decomposition of wheat, oat, barley and Brassica carinata straws. A kinetic study. Energy Fuels 2009, 23, 646-652. doi: 10.1021/ef800868k Supporting Info Repository
● Khalil, R.; Várhegyi, G.; Jäschke, S.; Grønli, M. G.; Hustad, J.: CO2 gasification of biomass chars. A kinetic study. Energy Fuels 2009, 23, 94-100. doi: 10.1021/ef800739m Repository
● Várhegyi, G.; Czégény, Zs.; Jakab, E.; McAdam, K.; Liu, C.: Tobacco pyrolysis. Kinetic evaluation of thermogravimetric – mass spectrometric experiments. J. Anal. Appl. Pyrolysis 2009, 86, 310-322. doi: 10.1016/j.jaap.2009.08.008 Supplementary Content Repository
● Czégény, Zs.; Blazsó, M.; Várhegyi, G.; Jakab, E.; Liu, C.; Nappi, L.: Formation of selected toxicants from tobacco under different pyrolysis conditions, J. Anal. Appl. Pyrolysis 2009, 85, 47-53. doi: 10.1016/j.jaap.2008.10.001
● Mészáros, E.; Jakab, E.; Gáspár, M.; Réczey, K.; Várhegyi, G.: Thermal behavior of corn fibers and corn fiber gums prepared in fiber processing to ethanol, J. Anal. Appl. Pyrolysis 2009, 85, 11-18. doi: 10.1016/j.jaap.2008.10.004
● Wu, M.; Várhegyi, G.; Zha Q.: Kinetics of cellulose pyrolysis after a pressurized heat treatment. Thermochim. Acta 2009, 496, 59-65. doi: 10.1016/j.tca.2009.06.024 Repository
● Khalil, R. A.; Mészáros, E.; Grønli, M.G.; Várhegyi, G.; Mohai, I.; Marosvölgyi, B.; Hustad, J. E.: Thermal analysis of energy crops. Part I: The applicability of a macro-thermobalance for biomass studies. J. Anal. Appl. Pyrolysis 2008, 81, 52-59. doi: 10.1016/j.jaap.2007.08.004
● Mészáros, E.; Jakab, E.; Várhegyi, G.; Bourke, J.; Manley-Harris, M.; Nunoura, T.; Antal, M. J., Jr.: Do all carbonized charcoals have the same chemical structure? 1. Implications of thermogravimetry - mass spectrometry measurements. Ind. Eng. Chem. Res. 2007, 46, 5943-5953. doi: 10.1021/ie0615842
● Becidan, M.; Várhegyi, G.; Hustad, J. E.; Skreiberg, Ø.: Thermal decomposition of biomass wastes. A kinetic study. Ind. Eng. Chem. Res. 2007, 46, 2428-2437. doi: 10.1021/ie061468z Repository
● Várhegyi, G.: Aims and methods in non-isothermal reaction kinetics. J. Anal. Appl. Pyrolysis 2007, 79, 278-288. doi: 10.1016/j.jaap.2007.01.007 Repository
● Mészáros, E.; Jakab, E.; Várhegyi, G.: TG/MS, Py-GC/MS and THM-GC/MS study of the composition and thermal behavior of extractive components of Robinia pseudoacacia. J. Anal. Appl. Pyrolysis 2007, 79, 61-70. doi: 10.1016/j.jaap.2006.12.007
● Mészáros, E.; Jakab, E.; Várhegyi, G.; Tóvári, P.: Thermogravimetry/mass spectrometry analysis of energy crops. J. Therm. Anal. Calor. 2007, 88, 477-482. doi: 10.1007/s10973-006-8102-4
● Várhegyi, G.; Mészáros, E.; Antal, M. J., Jr.; Bourke, J.; Jakab, E.: Combustion kinetics of corncob charcoal and partially demineralized corncob charcoal in the kinetic regime. Ind. Eng. Chem. Res. 2006, 45, 4962-4970. doi: 10.1021/ie0602411 Repository
● Gómez, C. J.; Várhegyi, G.; Puigjaner, L.: Slow pyrolysis of woody residues and an herbaceous biomass crop: A kinetic study Ind. Eng. Chem. Res. 2005, 44, 6650-6660. doi: 10.1021/ie050474c
● Várhegyi, G.; Mészáros, E.; Jakab, E.: Advanced computational methods for the characterization of biomass samples by thermogravimetric analysis. In Biomass for Energy, Industry and Climate Protection, Proceedings of the 2nd World Biomass Conference, Edited by W. P. M. Van Swaaij et al., pp. 902-905, ETA and WIP, Florence 2004,
● Mészáros, E.; Várhegyi, G.; Jakab, E.; Marosvölgyi, B.: Thermogravimetric and reaction kinetic analysis of biomass samples from an energy plantation. Energy Fuels 2004, 18, 497-507. doi: 10.1021/ef034030%2B Repository
● Várhegyi, G.; Grønli, M. G.; Di Blasi, C.: Effects of sample origin, extraction and hot water washing on the devolatilization kinetics of chestnut wood. Ind. Eng. Chem. Res. 2004, 43, 2356-2367. doi: 10.1021/ie034168f Repository
● Mészáros, E.; Jakab, E.; Várhegyi, G.; Szepesváry, P.; Marosvölgyi, B.: Comparative study of the thermal behavior of wood and bark of young shoots obtained from an energy plantation. J. Anal. Appl. Pyrolysis, 2004, 72, 317-328. doi: 10.1016/j.jaap.2004.07.009
● Mochidzuki, K.; Soutric, F.; Tadokoro, K.; Antal, M. J., Jr.; Tóth, M.; Zelei, B.; Várhegyi, G.: Electrical and Physical Properties of Carbonized Charcoals. Ind. Eng. Chem. Res. 2003, 42, 5140 – 5151. doi: 10.1021/ie030358e
● Várhegyi, G.; Pöppl, L.; Földvári, I.: Kinetics of the oxidation of bismuth tellurite, Bi2TeO5: Empirical model and least squares evaluation strategies to obtain reliable kinetic information. Thermochim. Acta 2003, 399, 225-239. doi: 10.1016/S0040-6031(02)00469-0
● Várhegyi, G.; Antal, M. J., Jr.: Charcoal, carbons and charcoal-type fuels from biomass wastes. Ecological Chemistry and Engineering - Chemia i Inzynieria Ekologiczna 2002, 9, 21-31.
● Mészáros, E.; Jakab, E.; Várhegyi, G.; Marosvölgyi, B.: Thermal behavior of biomass plant materials. Ecological Chemistry and Engineering - Chemia i Inzynieria Ekologiczna 2002, 9, 33-41.
● Várhegyi, G.; Szabó, P.; Antal, M. J., Jr.: Kinetics of charcoal devolatilization. Energy Fuels 2002, 16, 724-731. doi: 10.1021/ef010227v Repository
● Grønli, M. G.; Várhegyi, G.; Di Blasi, C.: Thermogravimetric analysis and devolatilization kinetics of wood. Ind. Eng. Chem. Res. 2002, 41, 4201-4208. doi: 10.1021/ie0201157
● Tam, M. S.; Antal, M. J., Jr.; Jakab, E.; Várhegyi, G.: Activated carbon from macadamia nut shell by air oxidation in boiling water. Ind. Eng. Chem. Res. 2001, 40, 578-588. doi: 10.1021/ie000461t
● Várhegyi, G.; Szabó, P.; Jakab, E.; Till, F.: Least squares criteria for the kinetic evaluation of thermoanalytical experiments. Examples from a char reactivity study. J. Anal. Appl. Pyrolysis 2001, 57, 203-222. doi: 10.1016/S0165-2370(00)00113-3 Repository
● Pöppl, L.; Földvári, I.; Várhegyi, G.: Oxidation of bismuth tellurite, Bi2TeO5 I. Thermoanalytical and optical microscopic studies. J. Solid State Chem. 2001, 161, 365-372. doi: 10.1006/jssc.2001.9344
● Várhegyi, G.; Szabó, P.; Antal, M. J., Jr.; Dai, X.: Kinetic modeling of the gasification of biomass charcoals. In 1st World Conference on Biomass for Energy and Industry (Proceedings), Edited by S. Kyritsis et al., Volume 2, pp. 1783-1785, James & James Science Ltd., 2001,
● Jakab, E.; Várhegyi, G.; Faix, O.: Thermal decomposition of polypropylene in the presence of wood-derived materials. J. Anal. Appl. Pyrolysis 2000, 56, 273-285. doi: 10.1016/S0165-2370(00)00101-7
● Virág, I.; Pöppl, L.; Várhegyi, G.: Kinetic study of rapidly quenched Ni81P19 amorphous alloys. Thermochim. Acta 2000, 351, 79-84. doi: 10.1016/S0040-6031(00)00422-6
● Várhegyi, G.; Till, F.: Comparison of temperature programmed char combustion in CO2 - O2 and Ar - O2 mixtures at elevated pressure. Energy Fuels 1999, 13, 539-540. doi: 10.1021/ef980159l Repository
● Grønli, M.; Antal, M. J., Jr.; Várhegyi, G.: A round-robin study of cellulose pyrolysis kinetics by thermogravimetry. Ind. Eng. Chem. Res. 1999, 38, 2238-2244. doi: 10.1021/ie980601n Repository
● Várhegyi, G.; Till, F.: Computer processing of thermogravimetric - mass spectrometric and high pressure thermogravimetric data. Part 1. Smoothing and differentiation. Thermochim. Acta 1999, 329, 141-145. doi: 10.1016/S0040-6031(99)00041-6 Repository
● Várhegyi, G.; Szabó, P.; Till, F.; Zelei, B.; Antal, M. J., Jr.; Dai X.: TG, TG-MS and FTIR characterization of high-yield biomass charcoals. Energy Fuels 1998, 12, 969-974. doi: 10.1021/ef9800359 Repository
● Antal, M. J., Jr.; Várhegyi, G.; Jakab, E.: Cellulose pyrolysis kinetics: Revisited. Ind. Eng. Chem. Res. 1998, 37 1267-1275. doi: 10.1021/ie970144v Repository
● Minowa, T.; Zhen, F.; Ogi, T.; Várhegyi, G.: Decomposition of cellulose and glucose in hot-compressed water under catalyst-free condition. J. Chem. Eng. Japan 1998, 31 131-134. doi: 10.1252/jcej.31.131
● Antal, M. J., Jr.; Várhegyi, G.: Impact of systematic errors on the determination of cellulose pyrolysis kinetics. Energy Fuels 1997, 11, 1309-1310. doi: 10.1021/ef970030w Repository
● Várhegyi, G.; Antal, M. J., Jr.; Jakab, E. , Szabó, P.: Kinetic modeling of biomass pyrolysis. J. Anal. Appl. Pyrolysis 1997, 42, 73-87. doi: 10.1016/S0165-2370(96)00971-0 Repository
● Minowa, T.; Zhen, F.; Ogi, T.; Várhegyi, G.: Liquefaction of cellulose in hot compressed water using sodium carbonate: Product distribution at different reaction temperatures. J. Chem. Eng. Japan 1997, 30 186-190. doi: 10.1252/jcej.30.186
● Várhegyi, G.; Szabó, P.; Jakab, E.; Till, F.; Richard J-R.: Mathematical modeling of char reactivity in Ar-O2 and CO2-O2 mixtures. Energy Fuels 1996, 10, 1208-1214. doi: 10.1021/ef950252z Repository
● Szabó, P.; Várhegyi, G.; Till, F.; Faix, O.: Thermogravimetric - mass spectrometric characterization of two energy crops, Arundo donax and Miscanthus sinensis. J. Anal. Appl. Pyrolysis 1996, 36, 179-190. doi: 10.1016/0165-2370(96)00931-X
● Várhegyi, G.; Antal, M. J., Jr.; Szabó, P.; Jakab, E.; Till, F.: Application of complex reaction kinetic models in thermal analysis. The least squares evaluation of series of experiments. J. Thermal Anal. 1996, 47, 535-542. doi: 10.1007/BF01983995 Repository
● Antal, M. J., Jr.; Várhegyi, G.: Cellulose pyrolysis kinetics: The current state of knowledge. Ind. Eng. Chem. Res. 1995, 34, 703-717. doi: 10.1021/ie00042a001
● Várhegyi, G.; Szabó, P.; Antal, M. J., Jr.: Reaction kinetics of the thermal decomposition of cellulose and hemicellulose in biomass materials. In Advances in Thermochemical Biomass Conversion (Ed. by A. V. Bridgwater), Volume 2, Blackie Academic and Professional, London, pp. 760-771, 1994, doi: 10.1007/978-94-011-1336-6_59 Repository
● Várhegyi, G.; Szabó, P.; Antal, M. J., Jr.: Kinetics of the thermal decomposition of cellulose under the experimental conditions of thermal analysis. Theoretical extrapolations to high heating rates. Biomass Bioenergy 1994, 7, 69-74. doi: 10.1016/0961-9534(95)92631-H Repository
● Várhegyi, G.; Jakab, E.; Antal, M. J., Jr.: Is the Broido - Shafizadeh model for cellulose pyrolysis true? Energy Fuels 1994, 8, 1345-1352. doi: 10.1021/ef00048a025 Repository
● Várhegyi, G.; Szabó, P.; Mok, W. S. L.; Antal, M. J., Jr.: Kinetics of the thermal decomposition of cellulose in sealed vessels at elevated pressures. Effects of the presence of water on the reaction mechanism. J. Anal. Appl. Pyrolysis 1993, 26, 159-174. doi: 10.1016/0165-2370(93)80064-7 Repository
● Mok, W. S. L.; Antal, M. J., Jr.; Szabó, P.; Várhegyi, G.; Zelei, B.: Formation of charcoal from biomass in a sealed reactor. Ind. Eng. Chem. Res. 1992, 31, 1162-1166. doi: 10.1021/ie00004a027
● Mok, W. S. L.; Antal, M. J., Jr.; Várhegyi, G.: Productive and parasitic pathways in dilute acid hydrolysis of cellulose. Ind. Eng. Chem. Res. 1992, 31, 94-100. doi: 10.1021/ie00001a014
● Jakab, E.; Till, F.; Várhegyi, G.: Thermogravimetric - mass spectrometric study on the low temperature oxidation of coals. Fuel Process. Technol. 1991, 28, 221-238. doi: 10.1016/0378-3820(91)90076-O
● Antal, M. J., Jr.; Mok, W. S. L.; Várhegyi, G.; Székely, T.: A review of methods for improving the yield of charcoal from biomass. Energy Fuels 1990, 4, 221-225. doi: 10.1021/ef00021a001
● Szabó, P.; Várhegyi, G.; Till, F.; Székely, T.: Investigation of Hungarian subbituminous coals by thermogravimetry - mass spectrometry. Part 1: Evolution of hydrocarbon products. Thermochim. Acta 1990, 170, 167-177. doi: 10.1016/0040-6031(90)80534-6
● Szabó, P.; Várhegyi, G.; Till, F.; Székely, T.: Investigation of Hungarian subbituminous coals by thermogravimetry - mass spectrometry. Part 2: Evolution of oxygen and sulphur containing products. Kinetics of the overall mass loss. Thermochim. Acta 1990, 170, 179-188. doi: 10.1016/0040-6031(90)80535-7
● Várhegyi, G.; Antal, M. J., Jr.; Székely, T.; Szabó, P.: Kinetics of the thermal decomposition of cellulose, hemicellulose and sugar cane bagasse. Energy Fuels 1989, 3, 329-335. doi: 10.1021/ef00015a012
● Várhegyi, G.; Jakab, E.; Till, F.; Székely, T.: Thermogravimetric - mass spectrometric characterization of the thermal decomposition of sunflower stem. Energy Fuels 1989, 3, 755-760. doi: 10.1021/ef00018a017
● Pokol, Gy.; Várhegyi, G.: Kinetic aspects of thermal analysis. CRC Crit. Rev. Anal. Chem. 1988, 19, 65-93. doi: 10.1080/10408348808542808
● Várhegyi, G.; Antal, M. J., Jr.; Székely, T.; Till, F.; Jakab, E.: Simultaneous thermogravimetric - mass spectrometric studies on the thermal decomposition of biopolymers. Part 1: Avicel cellulose in the presence and absence of catalysts. Energy Fuels 1988, 2, 267-272. doi: 10.1021/ef00009a007
● Várhegyi, G.; Antal, M. J., Jr.; Székely, T.; Till, F.; Jakab, E.; Szabó, P.: Simultaneous thermogravimetric - mass spectrometric studies on the thermal decomposition of biopolymers. Part 2: Sugar cane bagasse in the presence and absence of catalysts. Energy Fuels 1988, 2, 273-277. doi: 10.1021/ef00009a008
● Šimkovic, I.; Várhegyi, G.; Antal, M. J., Jr.; Ebringerova, A.; Székely, T.; Szabó, P.: TG/MS characterization of the thermal decomposition of (4-O-methyl-D-glucurono)-D-xylan. J. Appl. Polym. Sci. 1988, 36, 721-728. doi: 10.1002/app.1988.070360320
● Várhegyi, G.; Székely, T.; Till, F.; Jakab, E.; Szabó, P.: Influence of the sample mass and the presence of the reaction products on the thermoanalytical results. J. Thermal Anal. 1988, 33, 87-95. doi: 10.1007/BF01914587
● Székely, T.; Várhegyi, G.; Till, F.; Szabó, P.; Jakab, E.: The effects of heat and mass transport on the results of thermal decomposition studies. Part 1: The three reactions of calciumoxalate monohydrate. J. Anal. Appl. Pyrolysis 1987, 11, 71-81. doi: 10.1016/0165-2370(87)85020-9
● Székely, T.; Várhegyi, G.; Till, F.; Szabó, P.; Jakab, E.: The effects of heat and mass transport on the results of thermal decomposition studies. Part 2: Polystyrene, polytetrafluoroethylene and polypropylene. J. Anal. Appl. Pyrolysis 1987, 11, 83-92. doi: 10.1016/0165-2370(87)85021-0
● Várhegyi, G.: Reaction kinetics in thermal analysis: A brief survey of fundamental research problems. Thermochim. Acta 1987, 110, 95-99. doi: 10.1016/0040-6031(87)88215-1
● Várhegyi, G.; Szabó, P.; Till, F.: Problems in the DSC and DTA study of the burning properties of fuels and other organic materials. Thermochim. Acta 1986, 106, 191-199. doi: 10.1016/0040-6031(86)85131-0
● Várhegyi, G.; Till, F.; Székely, T.: Software for a mass spectrometer - thermobalance system. Thermochim. Acta 1986, 102, 115-124. doi: 10.1016/0040-6031(86)85320-5
● Blazsó, M.; Székely, T.; Till, F.; Várhegyi, G.; Jakab, E.; Szabó, P.: Pyrolysis GC-MS and TG-MS investigation of brown coals. J. Anal. Appl. Pyrolysis 1985, 8, 255-269. doi: 10.1016/0165-2370(85)80030-9
● Várhegyi, G.; Alexander, G.: The use of histograms in computer aided comparison of chromatograms. J. Chromatography 1985, 318, 247-253. doi: 10.1016/S0021-9673(01)90685-5
● Várhegyi, G.; Szabó, P.; Till, F.: On the kinetic evaluation of the thermogravimetric curves. Thermochim. Acta 1985, 92, 141-144. doi: 10.1016/0040-6031(85)85837-8
● Pokol, Gy.; Várhegyi, G.; Várady, L.: Studies on the kinetics of the gibbsite ---> chi-alumina reaction. Thermochim. Acta 1984, 76, 237-247. doi: 10.1016/0040-6031(84)87021-5
● Várhegyi, G.: The effects of imperfect temperature programming on the kinetic evaluation of thermoanalitical curves. Part 3. Error bounds for the activation energy and the formal reaction order. Thermochim. Acta 1983, 65, 333-350. doi: 10.1016/0040-6031(83)80033-1
● Várhegyi, G.: The effects of imperfect temperature programming on the kinetic evaluation of thermoanalitical curves. Part 1. A simple mathematical example. Thermochim. Acta 1982, 59, 31-41. doi: 10.1016/0040-6031(82)87090-1
● Várhegyi, G.: The effects of imperfect temperature programming on the kinetic evaluation of thermoanalitical curves. Part 2. Concave and convex curvatures on the temperature - time functions. Thermochim. Acta 1982, 59, 43-49. doi: 10.1016/0040-6031(82)87091-3
● Várhegyi, G.: The shape of the thermoanalytical curves at hyperbolic temperature programs. Thermochim. Acta 1982, 57, 247-250. doi: 10.1016/0040-6031(82)80064-6
● Várhegyi, G.; Székely, T.: Reaction kinetics in thermal analysis: The sensitivity of kinetic equations to experimental errors. A mathematical analysis. Thermochim. Acta 1982, 57, 13-28. doi: 10.1016/0040-6031(82)87019-6
● Székely, T.; Till, F.; Várhegyi, G.: Comments on the use of reaction kinetics for thermal analysis. Proc. 2nd European Symp. Therm. Anal., (Ed.: D. Dollimore) Heyden, London, pp. 135-138, 1981,
● Blazsó, M.; Várhegyi, G.; Jakab, E.: Pyrolysis - gas chromatography of styrene - acrylonitrile copolymers. Calculations of kinetic parameters and sequence distribution. J. Anal. Appl. Pyrolysis 1980, 2, 177-185. doi: 10.1016/0165-2370(80)80029-5
● Várhegyi, G.: A basic problem in the mathematical modelling of pyrolysis: The number of the unknown parameters. J. Anal. Appl. Pyrolysis 1980, 2, 1-6. doi: 10.1016/0165-2370(80)80040-4
● Székely, T.; Till, F.; Várhegyi, G.; Blazsó, M.: Description of the thermal degradation of polymers by the use of complex thermal analysis. J. Polym. Sci., Polym. Symp. 1980, 67, 115-131. doi: 10.1002/polc.5070670109
● Székely, T.; Till, F.; Várhegyi, G.: Characterisation of fossil fuels by computer aided thermobalance - mass spectrometer system. Proc. 6th Internat. Conf. Thermal Anal. (Ed.: W. Hemminger) Birkhauser Verlag, Basel, vol. 2, pp. 365-370, 1980,
● Várhegyi, G.; Groma, G.; Lengyel, M.: DSC examination of alloys. Thermochim. Acta 1979, 30, 311-317. doi: 10.1016/0040-6031(79)85066-2
● Várhegyi, G.: Kinetic evaluation of non-isothermal thermoanalytical curves in the case of independent reactions. Thermochim. Acta 1979, 28, 367-376. doi: 10.1016/0040-6031(79)85140-0
● Blazsó, M.; Várhegyi, G.: Calculation of kinetic parameters and sequence distribution from pyrolysis gas chromatography data of styrene - methylacrylate copolymers. Europ. Polym. J. 1978, 14, 625-630. doi: 10.1016/0014-3057(78)90002-2
● Várhegyi, G.; Blazsó, M.: Thermal degradation and microstructure of vinyl copolymers. A mathematical model. Europ. Polym. J. 1978, 14, 349-352. doi: 10.1016/0014-3057(78)90119-2
● Várhegyi, G.: Integration of the rate constant and linearization of the kinetic equations in nonisothermal reaction kinetics. Thermochim. Acta 1978, 25, 201-207. doi: 10.1016/0040-6031(78)85007-2
● Várhegyi, G.; Eon, C. H.: Calculation of the free energy equation parameters from ternary liquid-liquid equilibrium data. Ind. Eng. Chem. Fundam. 1977, 16, 182-185. doi: 10.1021/i160062a002
● Várhegyi, G.; Székely, T.: Mathematical modelling of thermal decomposition processes. J. Thermal Anal. 1977, 12, 179-185. doi: 10.1007/BF01909474
● Borosgyevi, E.; Peredy-Kajtár, M.; Várhegyi G.; Hemela, J.: Polycondensation kinetics. Angew. Makromol. Chem. 1976, 54, 31-48. doi: 10.1002/apmc.1976.050540103
● Borosgyevi, E.; Peredy-Kajtár, M.; Várhegyi G.; Hemela, J.: Polycondensation kinetics - NMR-study of reaction of producing furfuryl alcohol-formaldehyde resins [in Hungarian]. Magyar Kémiai Folyóirat 1976, 82, 367-374.
● Székely, T.; Till, F.; Várhegyi, G.: Improved methods for the numerical evaluation of thermogravimetric - mass spectrometric results. Proc. First Europ. Symp. Thermal Anal. (Ed.: D. Dollimore) Heyden and Son, London, pp. 33-34, 1976,
● Várhegyi, G.: Numerical differentiation of experimental data. Information Processing Letters 1973, 2, 24-25. doi: 10.1016/0020-0190(73)90022-7
● Várhegyi, G.: An alternative computational method to that of Judd. J. Thermal Anal. 1973, 5, 503-504. doi: 10.1007/BF01950241
● Székely, T.; Várhegyi, G.; Till, F.: The determination and use of the second derivative thermogravimetric function and the calculation of the kinetic constants of some decomposition reaction types. J. Thermal Anal. 1973, 5, 227-237. doi: 10.1007/BF01950371
● Várhegyi, G.; Székely, T.: Some new data on the kinetics and mechanism of the thermal degradation of Teflon. Acta Chim. Acad. Sci. Hung. 1972, 73, 172-191.