How syngas composition affects catalytic steam reforming of tars: An analysis using toluene as model compound

Hua Lun Zhu; Ziyin Chen; Laura Pastor-Perez; Xiangyi Long; Marcos Millan

doi:10.1016/j.ijhydene.2022.10.045

How syngas composition affects catalytic steam reforming of tars: An analysis using toluene as model compound

Hua Lun Zhu, Ziyin Chen, Laura Pastor-Perez, Xiangyi Long, Marcos Millan^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Tar removal by catalytic steam reforming has an important role to play in gasification hot gas treatment. Despite the importance of understanding the influence gas atmosphere has on this reaction, the effect of a full syngas mixture has not been comprehensively investigated. This study aims to bridge that gap by analyzing the effect of each component as well as their combinations on steam reforming of toluene as biomass gasification tar model over a Ni/Al₂O₃ catalyst. It has been found that H₂, CO and CO₂ have minor inhibitory effects, slightly decreasing the initial toluene conversion. On the other hand, while CO and CO₂ do not lead to catalyst deactivation, H₂ and CH₄ deactivate Ni/Al₂O₃ by promoting coke deposition. Only 3 vol.% of CH₄ can significantly increase deactivation, despite being insignificant with toluene or CH₄ separately. The joint presence of CH₄ and H₂ causes further drops in conversion with time on stream.

Original language	English
Pages (from-to)	1290-1303
Number of pages	14
Journal	International Journal of Hydrogen Energy
Volume	48
Issue number	4
DOIs	https://doi.org/10.1016/j.ijhydene.2022.10.045
State	Published - 12 Jan 2023
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2022 Hydrogen Energy Publications LLC

Keywords

Carbon deposition
Catalyst deactivation
Nickel catalyst
Syngas
Tar steam reforming

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ijhydene.2022.10.045

Cite this

@article{53949d3c32a8416483bbf15f3f5b76f0,

title = "How syngas composition affects catalytic steam reforming of tars: An analysis using toluene as model compound",

abstract = "Tar removal by catalytic steam reforming has an important role to play in gasification hot gas treatment. Despite the importance of understanding the influence gas atmosphere has on this reaction, the effect of a full syngas mixture has not been comprehensively investigated. This study aims to bridge that gap by analyzing the effect of each component as well as their combinations on steam reforming of toluene as biomass gasification tar model over a Ni/Al2O3 catalyst. It has been found that H2, CO and CO2 have minor inhibitory effects, slightly decreasing the initial toluene conversion. On the other hand, while CO and CO2 do not lead to catalyst deactivation, H2 and CH4 deactivate Ni/Al2O3 by promoting coke deposition. Only 3 vol.\% of CH4 can significantly increase deactivation, despite being insignificant with toluene or CH4 separately. The joint presence of CH4 and H2 causes further drops in conversion with time on stream.",

keywords = "Carbon deposition, Catalyst deactivation, Nickel catalyst, Syngas, Tar steam reforming",

author = "Zhu, \{Hua Lun\} and Ziyin Chen and Laura Pastor-Perez and Xiangyi Long and Marcos Millan",

note = "Publisher Copyright: {\textcopyright} 2022 Hydrogen Energy Publications LLC",

year = "2023",

month = jan,

day = "12",

doi = "10.1016/j.ijhydene.2022.10.045",

language = "English",

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TY - JOUR

T1 - How syngas composition affects catalytic steam reforming of tars

T2 - An analysis using toluene as model compound

AU - Zhu, Hua Lun

AU - Chen, Ziyin

AU - Pastor-Perez, Laura

AU - Long, Xiangyi

AU - Millan, Marcos

PY - 2023/1/12

Y1 - 2023/1/12

N2 - Tar removal by catalytic steam reforming has an important role to play in gasification hot gas treatment. Despite the importance of understanding the influence gas atmosphere has on this reaction, the effect of a full syngas mixture has not been comprehensively investigated. This study aims to bridge that gap by analyzing the effect of each component as well as their combinations on steam reforming of toluene as biomass gasification tar model over a Ni/Al2O3 catalyst. It has been found that H2, CO and CO2 have minor inhibitory effects, slightly decreasing the initial toluene conversion. On the other hand, while CO and CO2 do not lead to catalyst deactivation, H2 and CH4 deactivate Ni/Al2O3 by promoting coke deposition. Only 3 vol.% of CH4 can significantly increase deactivation, despite being insignificant with toluene or CH4 separately. The joint presence of CH4 and H2 causes further drops in conversion with time on stream.

AB - Tar removal by catalytic steam reforming has an important role to play in gasification hot gas treatment. Despite the importance of understanding the influence gas atmosphere has on this reaction, the effect of a full syngas mixture has not been comprehensively investigated. This study aims to bridge that gap by analyzing the effect of each component as well as their combinations on steam reforming of toluene as biomass gasification tar model over a Ni/Al2O3 catalyst. It has been found that H2, CO and CO2 have minor inhibitory effects, slightly decreasing the initial toluene conversion. On the other hand, while CO and CO2 do not lead to catalyst deactivation, H2 and CH4 deactivate Ni/Al2O3 by promoting coke deposition. Only 3 vol.% of CH4 can significantly increase deactivation, despite being insignificant with toluene or CH4 separately. The joint presence of CH4 and H2 causes further drops in conversion with time on stream.

KW - Carbon deposition

KW - Catalyst deactivation

KW - Nickel catalyst

KW - Syngas

KW - Tar steam reforming

UR - https://www.scopus.com/pages/publications/85141337937

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DO - 10.1016/j.ijhydene.2022.10.045

M3 - Article

AN - SCOPUS:85141337937

SN - 0360-3199

VL - 48

SP - 1290

EP - 1303

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 4

ER -

How syngas composition affects catalytic steam reforming of tars: An analysis using toluene as model compound

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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Cite this