Selected publications: downloadable versions

     Wang, L.; Li, T.; Várhegyi, G.; Skreiberg, Ř.; Lřvĺs, 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: 
2018_Char+CO2_kinetics.pdf

     Várhegyi, G.; Wang, L.; Skreiberg, Ř.  Towards a meaningful non-isothermal kinetics for biomass materials and other complex organic samples  J. Therm. Anal. Calorim.  2018, ..., ...-....  doi: 10.1007/s10973-017-6893-0
Manuscript: 
2018_Towards_meaningful_non-isothermal_kinetics.pdf

     Barta-Rajnai, E.; Várhegyi, G.; Wang, L.; Skreiberg, Ř.; Grřnli, M.; Czégény, Zs.  Thermal decomposition kinetics of wood and bark and their torrefied products.  Energy Fuels 2017, 31, 4024-4034.  doi10.1021/acs.energyfuels.6b03419
Manuscript: 
2017_Kinetics_wood_bark_torrefied_products.pdf
Supporting information:  
2017_Supporting_info_Kinetics_wood_bark_torrefied_products.pdf

     Várhegyi, G.: In Honor of Michael J. Antal.  Energy Fuels 2016, 30, 7809-7810.  doi: 10.1021/acs.energyfuels.6b02476
Manuscript: 
2016_In_honor_of_Michael_J_Antal.pdf

     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
Manuscript:
2016_30-years_for_better_biomass_utilization.pdf
Lecture version: 
2016_lecture_30years_kinetics.pdf

     Wang, L.; Várhegyi, G.; Skreiberg, Ř.; Li, T.; Grřnli, 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
Manuscript: 
2016_Combustion_characteristics_biomass_charcoals.pdf
Supporting info:  
2016_Combustion_characteristics_biomass_charcoals_Supporting_Information.pdf

     Wang, L.; Várhegyi, G.; Skreiberg, Ř.:  CO2 Gasification of torrefied wood.  A kinetic study.  Energy Fuels 2014, 28, 7582-7590. doi: 10.1021/ef502308e
Manuscript:   
2014_Torrefied_wood+CO2.pdf
Supporting info: 
2014_Torrefied_wood+CO2_Supporting_Information.pdf

     Tapasvi, D.;  Khalil, R.; Várhegyi, G.;  Tran, K.-Q.; Grřnli, M.; Skreiberg, Ř.: Thermal decomposition kinetics of woods with an emphasis on torrefaction.  Energy Fuels 2013, 27, 6134-6145. doi: 10.1021/ef4016075
Manuscript: 
2013_Thermal_decomposition_kinetics_of_woods__Torrefaction.pdf

     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
Manuscript: 
2013_CO2_gasification_of_chars_from_wood_and_forest_residue.pdf

     Tapasvi, D.; Khalil, R.; Várhegyi, G.; Skreiberg, Ř.; Tran, K.-Q.; Grřnli, M.: Kinetic behavior of torrefied biomass in an oxidative environment.  Energy Fuels 2013, 27, 1050-1060.  doi: 10.1021/ef3019222
Manuscript: 
2013_Torrefied_biomass+O2.pdf
Supporting info:  2013_Torrefied_biomass+O2_Supporting_Information.pdf

     Trninić, M.; Wang, L.; Várhegyi, G.; Grřnli, M.; Skreiberg, Ř.: Kinetics of corncob pyrolysis.  Energy Fuels 2012, 26, 2005-2013.  doi: 10.1021/ef3002668
Manuscript: 
2012_Kinetics_of_corncob_pyrolysis.pdf

     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
Manuscript: 
2012_Combustion_kinetics_of_biomass_materials.pdf
Supporting info: 
2012_Combustion_kinetics_Supporting_Information.pdf

     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
Manuscript: 
2011_TGA_study_of_biomass_pyrolysis_kinetics__DAEM_with_prediction_tests.pdf
Supporting info: 
2011_TGA_study_of_biomass_pyrolysis_kinetics__Supporting_Information.pdf

     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
Manuscript: 
2010_TGA_study_of_tobacco_combustion_assuming_DAEM_devolatilization.pdf
Supporting info: 
2010_TGA_study_of_tobacco_combustion_Supporting_Information.pdf

     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
Manuscript: 
2009_TGA_Kinetics_of_Straws.pdf
Supporing info:  2009_TGA_Kinetics_of_Straws_Supporting_Information.pdf

     Khalil, R.; Várhegyi, G.; Jäschke, S.; Grřnli, M. G.; Hustad, J.:  CO2 gasification of biomass chars.  A kinetic study.  Energy Fuels 2009, 23, 94-100.  doi: 10.1021/ef800739m
Manuscript: 
2009_CO2_gasification_of_biomass_chars__A_kinetic_study.pdf

     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
Manuscript:  2009_Tobacco_pyrolysis__Kinetic_evaluation_of_TG-MS_experiments.pdf
Supplementary content: 
2009_Tobacco_pyrolysis__Supplementary_Content.pdf

     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
Manuscript: 
2009_Kinetics_of_cellulose_pyrolysis_after_pressurized_heat_treatment.pdf

     Becidan, M.; Várhegyi, G.; Hustad, J. E.; Skreiberg, Ř.:  Thermal decomposition of biomass wastes. A kinetic study.  Ind. Eng. Chem. Res. 2007, 46, 2428-2437.  doi: 10.1021/ie061468z
Manuscript: 
2007_Thermal_decomposition_of_biomass_wastes__A_kinetic_study.pdf

     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
Manuscript: 
2007_Aims_and_methods_in_non-isothermal_reaction_kinetics.pdf

     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 
Manuscript: 
2006_Kinetics_of_charcoal_combustion.pdf

     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 
Manuscript: 
2004_TGA_kinetics_of_energy_plantation_products.pdf

     Várhegyi, G.; Grřnli, 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 
Manuscript: 
2004_Effects_of_extraction_and_hot_water_washing_on_devolatilization_kinetics_of_chestnut_wood.pdf

     Várhegyi, G.; Szabó, P.; Antal, M. J., Jr.:  Kinetics of charcoal devolatilization.  Energy Fuels 2002, 16, 724-731.  doi: 10.1021/ef010227v 
Manuscript: 
2002_Kinetics_of_charcoal_devolatilization.pdf

     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
Manuscript:

     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  
Manuscript: 
2001_Least_squares_criteria_for_kinetic_evaluation_of_thermoanalytical_experiments.pdf

     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 
Manuscript: 
1999_Study_of_char_combustion_by_high_pressure_TGA.pdf

     Grřnli, 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 
Manuscript: 
1999_Round-robin_study_of_cellulose_pyrolysis_kinetics.pdf

     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  
Manuscript: 
1999_Smoothing_and_differentiation_for_TGA_and_TGA-MS.pdf

     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
Manuscript: 
1998_TG-MS_study_of_biomass_charcoals.pdf

     Antal, M. J., Jr.; Várhegyi, G.; Jakab, E.:  Cellulose pyrolysis kinetics:  Revisited.  Ind. Eng. Chem. Res. 1998, 37, 1267-1275.  doi: 10.1021/ie970144v 
Manuscript: 
1998_Cellulose_pyrolysis_kinetics_revisited.pdf

     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
Manuscript: 
1997_Systematic_errors_and_cellulose_pyrolysis_kinetics.pdf

     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
Manuscript: 
1997_Biomass_pyrolysis_kinetics.pdf

     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
Manuscript: 
1996_Char_combustion_kinetics.pdf

     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
Manuscript: 
1996_Complex_kinetic_models_in_thermal_analysis.pdf

     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
Manuscript: 
1994_Kinetics_of_thermal_decomposition_in_biomass.pdf

     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
Manuscript: 
1994_Cellulose_kinetics_with_extrapolations.pdf

     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
Manuscript: 
1994_Broido-type_kinetics_for_cellulose.pdf

     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
Manuscript: 
1993_Cellulose_at_eleveted_pressure__kinetics.pdf

 

Further downloadable info:  a complete list of the independent citations to our works as extracted from the Hungarian National Scientific Bibliography (MTMT) at 9 January 2018 (html, pdf).