文献类型：期刊文献

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

作者：Yan, Shuai[1,2];Feng, Jun[3];Yuan, Shenfu[4];Xia, Zihong[5];Han, Fengshuang[1,2];Qu, Xuan[3];Bi, Jicheng[3]

机构：[1]Ningbo Univ Technol, Sch Mat & Chem Engn, Ningbo 315211, Zhejiang, Peoples R China;[2]Tianjin Univ, Zhejiang Inst, Ningbo 315201, Zhejiang, Peoples R China;[3]Chinese Acad Sci, State Key Lab Coal Convers, Inst Coal Chem, Taiyuan 030001, Peoples R China;[4]Yunnan Univ, Natl Ctr Expt Chem & Chem Engn Educ Demonstrat, Yunnan Prov Key Lab Carbon Neutral & Green Low Car, Sch Chem Sci & Technol,Key Lab Med Chem Nat Resour, Kunming 650091, Peoples R China;[5]East China Univ Sci & Technol, Dept Energy & Chem Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：11

期号：1

外文期刊名：INTERNATIONAL JOURNAL OF COAL SCIENCE & TECHNOLOGY

收录：;EI(收录号：20241715955774);WOS:【SCI-EXPANDED(收录号:WOS:001205521900001)】；

基金：The authors gratefully acknowledge financial support from the National Natural Science Foundation of China (22308170), A Project Supported by Scientific Research Fund of Zhejiang Provincial Education Department (Y202250270), the Key research and development project of Shanxi Province (202102090301029), Scientific Research Incubation Program of Ningbo University of Technology (2022TS12), Scientific Research Project Funded by Ningbo University of Technology (2022KQ04).

语种：英文

外文关键词：Coal gasification; Catalytic hydrogasification; Methane; Pressurized fluidized bed

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" H-2, 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 knowledge of CCHG but also helps to guide the efficient hydrogenation of other carbonaceous resources such as biomass, CO2, and coal-derived wastes.