A critical review on direct catalytic hydrogasification of coal into CH4:catalysis process configurations,evaluations,and prospects

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外文摘要：Coal catalytic hydrogasification(CCHG)is a straightforward approach for producing CH4,which shows advantages over the mature coal-to-CH4 technologies from the perspectives of CH4 yield,thermal efficiency,and CO2 emission.The core of CCHG is to make carbon in coal convert into CH4 efficiently with a catalyst.In the past decades,intensive research has been devoted to catalytic hydrogasification of model carbon(pitch coke,activated carbon,coal char).However,the chemical process of CCHG is still not well understood because the coal structure is more complicated,and CCHG is a combination of coal catalytic hydropyrolysis and coal char catalytic hydrogasification.This review seeks to shed light on the catalytic process of raw coal during CCHG.The configuration of suitable catalysts,operating conditions,and feedstocks for tailoring CH4 formation were identified,and the underlying mechanisms were elucidated.Based on these results,the CCHG process was evaluated,emphasizing pollutant emissions,energy efficiency,and reactor design.Furthermore,the opportunities and strategic approaches for CCHG under the restraint of carbon neutrality were highlighted by considering the penetration of"green"H2,biomass,and CO2 into CCHG.Preliminary investigations from our laboratories demonstrated that the integrated CCHG and biomass/CO2 hydrogenation process could perform as an emerging pathway for boosting CH4 production by consuming fewer fossil fuels,fulfilling the context of green manufacturing.This work not only provides systematic knowl-edge of CCHG but also helps to guide the efficient hydrogenation of other carbonaceous resources such as biomass,CO2,and coal-derived wastes.

外文关键词：

Coal gasificationCatalytic hydrogasificationMethanePressurized fluidized bed

作者：

Shuai Yan、Jun Feng、Shenfu Yuan、Zihong Xia、Fengshuang Han、Xuan Qu、Jicheng Bi

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作者单位：

School of Materials and Chemical Engineering,Ningbo University of Technology,Ningbo 315211,Zhejiang,China

Zhejiang Institute of Tianjin University,Ningbo 315201,Zhejiang,China

State Key Laboratory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,China

School of Chemical Science and Engineering,Key Laboratory of Medicinal Chemistry for Natural Resource,Ministry of Education,National Center for Experimental Chemistry and Chemical Engineering Education Demonstration,Yunnan Provincial Key Laboratory of Carbon Neutral and Green Low-Carbon Technology,Yunnan University,Kunming 650091,China

Department of Energy and Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China

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基金：

National Natural Science Foundation of ChinaScientific Research Fund of Zhejiang Provincial Education DepartmentKey research and development project of Shanxi ProvinceScientific Research Incubation Program of Ningbo University of TechnologyScientific Research Project Funded by Ningbo University of Technology

项目编号：

22308170Y2022502702021020903010292022TS122022KQ04

出版年：

2024

DOI：

10.1007/s40789-024-00677-x

国际煤炭科学技术学报(英文)

CSTPCD

ISSN：2095-8293

年,卷(期)：2024.11(3)