生物质合成气甲烷化机理及催化体系研究进展

doi:10.11949/j.issn.0438-1157.20171405

摘要/Abstract

摘要：

天然气的供需矛盾促使人们寻找新的天然气资源，其中利用生物质合成天然气（Bio-SNG）的替代技术受到了全世界的关注。在整个工艺过程中，生物质合成气制取甲烷是关键技术，而甲烷化催化剂是其核心要素。简述了近年来生物质合成气甲烷化机理及其催化体系的研究进展，重点讨论了合成气中CO甲烷化、CO₂甲烷化反应机理，以及甲烷化催化剂中活性金属、助剂和载体对CO甲烷化、CO₂甲烷化以及CO与CO₂共存条件下甲烷化反应性能的影响，分析了目前仍存在的主要问题，并指出了进一步研究的发展方向。

关键词: 甲烷化, 催化剂, 机理, 一氧化碳, 二氧化碳, 天然气

Abstract:

The increasing supply and demand of natural gas prompt people to search new resources of producing natural gas. Biomass syngas converting to natural gas (Bio-SNG) has attracted more and more attention, in which the choice of syngas methanation catalysts is the key. This paper summarized the latest development on the research of syngas methanation mechanism and catalysts. Especially, CO methanation mechanism, CO₂ methanation mechanism, and the effects of active metals, promoters and support materials on methanation performances were introduced detailed. In addition, the shortcoming of present research and outlook of future research were also pointed out.

Key words: methanation, catalyst, mechanism, carbon monoxide, carbon dioxide, natural gas

中图分类号:

TQ221.1

林江辉, 王琼, 王捷, 王洪涛, 马光远, 徐艳飞, 定明月. 生物质合成气甲烷化机理及催化体系研究进展[J]. 化工学报, 2018, 69(5): 1819-1828.

LIN Jianghui, WANG Qiong, WANG Jie, WANG Hongtao, MA Guangyuan, XU Yanfei, DING Mingyue. Progress on mechanism and catalysts of biomass syngas methanation[J]. CIESC Journal, 2018, 69(5): 1819-1828.

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