Search Results - "Westerhof, Roel J. M."

Effect of the Fast Pyrolysis Temperature on the Primary and Secondary Products of Lignin by Zhou, Shuai, Garcia-Perez, Manuel, Pecha, Brennan, Kersten, Sascha R. A, McDonald, Armando G, Westerhof, Roel J. M

“…This paper presents results on the primary pyrolysis products of organosolv lignin at temperatures between 360 and 700 °C. To study the primary products, a…”
Get full text

Heterogeneous and homogeneous reactions of pyrolysis vapors from pine wood by Hoekstra, Elly, Westerhof, Roel J. M., Brilman, Wim, Van Swaaij, Wim P.M., Kersten, Sascha R. A., Hogendoorn, Kees J. A., Windt, Michael

“…To maximize oil yields in the fast pyrolysis of biomass it is generally accepted that vapors need to be rapidly quenched. The influence of the heterogeneous…”
Get full text

Secondary Vapor Phase Reactions of Lignin-Derived Oligomers Obtained by Fast Pyrolysis of Pine Wood by Zhou, Shuai, Garcia-Perez, Manuel, Pecha, Brennan, McDonald, Armando G, Kersten, Sascha R. A, Westerhof, Roel J. M

“…In this paper, the effect of secondary reactions in vapor phase on the yield and composition of pyrolytic lignin (PL) oligomers was investigated. The Pine wood…”
Get full text

Effect of Temperature in Fluidized Bed Fast Pyrolysis of Biomass: Oil Quality Assessment in Test Units by Westerhof, Roel J. M, Brilman, Derk W. F. (Wim), van Swaaij, Wim P. M, Kersten, Sacha R. A

“…Pine wood was pyrolyzed in a 1 kg/h fluidized bed fast pyrolysis reactor that allows a residence time of pine wood particles up to 25 min. The reactor…”
Get full text

Stepwise Fast Pyrolysis of Pine Wood by Westerhof, Roel J. M, Brilman, D. Wim. F, Garcia-Perez, Manuel, Wang, Zhouhong, Oudenhoven, Stijn R. G, Kersten, Sascha R. A

“…This paper reports the yields and product composition obtained from the stepwise pyrolysis of pine wood in a fluidized bed reactor. The first step temperature…”
Get full text

Effect of Cellulose Crystallinity on Solid/Liquid Phase Reactions Responsible for the Formation of Carbonaceous Residues during Pyrolysis by Wang, Zhouhong, Pecha, Brennan, Westerhof, Roel J. M, Kersten, Sascha R. A, Li, Chun-Zhu, McDonald, Armando G, Garcia-Perez, Manuel

“…This study reports changes in solid phase composition when samples of Avicel cellulose (crystallinity: 60.5%) and ball-milled microcrystalline cellulose…”
Get full text

Effect of particle size on the composition of lignin derived oligomers obtained by fast pyrolysis of beech wood by Zhou, Shuai, Garcia-Perez, Manuel, Pecha, Brennan, McDonald, Armando G., Westerhof, Roel J.M.

“…•Pyrolysis of beech wood particles (0.3 and 14mm).•The yield of pyrolytic lignin decreased as particle size increased.•Two different pyrolysis regimes were…”
Get full text

Impacts of temperature on evolution of char structure during pyrolysis of lignin by Zhang, Chenting, Shao, Yuewen, Zhang, Lijun, Zhang, Shu, Westerhof, Roel J.M., Liu, Qing, Jia, Peng, Li, Qingyin, Wang, Yi, Hu, Xun

“…This study investigated the pyrolysis of lignin pyrolysis in a temperature region from 200 to 800 °C, aiming to understand influence of pyrolysis temperature…”
Get full text

Acid-Catalyzed Conversion of Xylose in 20 Solvents: Insight into Interactions of the Solvents with Xylose, Furfural, and the Acid Catalyst by Hu, Xun, Westerhof, Roel J. M, Dong, Dehua, Wu, Liping, Li, Chun-Zhu

“…In this study, the acid-catalyzed conversion of xylose to furfural was investigated in 20 solvents ranging from water, alcohol, ketones, furans, ethers,…”
Get full text

Fractional Condensation of Biomass Pyrolysis Vapors by Westerhof, Roel J. M, Brilman, D. Wim F, Garcia-Perez, Manuel, Wang, Zhouhong, Oudenhoven, Stijn R. G, van Swaaij, Wim P. M, Kersten, Sascha R. A

“…In this paper, we have investigated the possibilities to steer the composition and, thus, the quality of pyrolysis liquids by the reactor temperature and the…”
Get full text

Effect of Pyrolysis Temperature and Sulfuric Acid During the Fast Pyrolysis of Cellulose and Douglas Fir in an Atmospheric Pressure Wire Mesh Reactor by Wang, Zhouhong, Zhou, Shuai, Pecha, Brennan, Westerhof, Roel J. M, Garcia-Perez, Manuel

“…The goal of this study is to better understand important reactions responsible for the suppression of anhydrosugars during the pyrolysis of microcrystalline…”
Get full text

Controlling the Water Content of Biomass Fast Pyrolysis Oil by Westerhof, Roel J. M, Kuipers, Norbert J. M, Kersten, Sascha R. A, van Swaaij, Wim P. M

“…Several methods to control the water content of pyrolysis oil from fast pyrolysis of biomass were evaluated experimentally. Parameters varied were the…”
Get full text

Fast Pyrolysis of Biomass in a Fluidized Bed Reactor: In Situ Filtering of the Vapors by Hoekstra, Elly, Hogendoorn, Kees J. A, Wang, Xiaoquan, Westerhof, Roel J. M, Kersten, Sascha R. A, van Swaaij, Wim P. M, Groeneveld, Michiel J

“…A system to remove in situ char/ash from hot pyrolysis vapors has been developed and tested at the University of Twente. The system consists of a continuous…”
Get full text

Biomethane Production from Pyrolytic Aqueous Phase: Biomass Acid Washing and Condensation Temperature Effect on the Bio-oil and Aqueous Phase Composition by Liaw, Shi-Shen, Perez, Victor Haber, Westerhof, Roel J.M., David, Geraldo Ferreira, Frear, Craig, Garcia-Perez, Manuel

“…The aim of this work was to evaluate biomethane production by anaerobic digestion using aqueous phase from Fast Pyrolysis of Douglas Fir Wood as substrate. The…”
Get full text

Biofuel and Methyl Levulinate from Biomass‐Derived Fractional Condensed Pyrolysis Oil and Alcohol by Westerhof, Roel. J. M., Oudenhoven, Stijn R G., Hu, Xun, Heeres, Hero J., Li, Chun‐Zhu, Garcia‐Perez, Manuel, Kersten, Sascha R. A.

“…The aim of this research was to evaluate the potential for the stabilization of biomass‐derived pyrolysis oils by using acid‐catalyzed (Amberlyst 70) reactions…”
Get full text

Cellulose-Lignin interactions during slow and fast pyrolysis by Hilbers, Tim J., Wang, Zhouhong, Pecha, Brennan, Westerhof, Roel J.M., Kersten, Sascha R.A., Pelaez-Samaniego, Manuel Raul, Garcia-Perez, Manuel

“…•No effect on the yield of bio-char was observed due to cellulose lignin interactions.•In general the products of cellulose fragmentation reactions and the…”
Get full text

Acid-catalyzed conversion of C6 sugar monomer/oligomers to levulinic acid in water, tetrahydrofuran and toluene: Importance of the solvent polarity by Hu, Xun, Wang, Shuai, Westerhof, Roel J.M., Wu, Liping, Song, Yao, Dong, Dehua, Li, Chun-Zhu

“…•Effects of solvent polarity on acid-catalyzed conversion of C6 sugars were studied.•In non-polar solvent the water in catalyst helps suppress polymerization…”
Get full text

Effect of cellulose crystallinity on the formation of a liquid intermediate and on product distribution during pyrolysis by Wang, Zhouhong, McDonald, Armando G., Westerhof, Roel J.M., Kersten, Sascha R.A., Cuba-Torres, Christian M., Ha, Su, Pecha, Brennan, Garcia-Perez, Manuel

“…► Cellulose samples with lower crystallinity start to degrade at lower temperatures. ► The conversion of ball-milled cellulose occurs through the formation of…”
Get full text

Is it possible to increase the oil yield of catalytic pyrolysis of biomass? A study using commercially-available acid and basic catalysts in ex-situ and in-situ modus by Castello, Daniele, He, Songbo, Ruiz, M. Pilar, Westerhof, Roel J.M., Heeres, Hero Jan, Seshan, Kulathuyier, Kersten, Sascha R.A.

“…•The maximum yield of oil phase organics (OPO) in CFP never exceeded the corresponding oil yield of thermal pyrolysis.•A path forward to obtain higher oil…”
Get full text

Recycling of product gas does not affect fast pyrolysis oil yield and composition by Pala, Mehmet, Marathe, Pushkar S., Hu, Xun, Ronsse, Frederik, Prins, Wolter, Kersten, Sascha R.A., Lange, Jean-Paul, Westerhof, Roel J.M.

“…•The effect of recycle gas atmosphere on biomass fast pyrolysis was investigated.•Recycle gas atmosphere did not have a notable effect on the product…”
Get full text