物理化学学报 >> 2015, Vol. 31 >> Issue (1): 1-10.doi: 10.3866/PKU.WHXB201411054

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CO加氢制C2含氧化合物Rh基催化剂中常见助剂的作用

陈维苗1, 丁云杰1,2, 薛飞1,3, 宋宪根1   

  1. 1. 中国科学院大连化学物理研究所, 洁净能源国家实验室筹, 辽宁 大连 116023;
    2. 中国科学院大连化学物理研究所, 催化重点国家实验室, 辽宁 大连 116023;
    3. 中国科学院大学, 北京 100049
  • 收稿日期:2014-09-30 修回日期:2014-11-04 发布日期:2014-12-25
  • 通讯作者: 丁云杰 E-mail:dyj@dicp.ac.cn

Role of Common Promoters in Rh-Based Catalysts for CO Hydrogenation to C2-Oxygenates

CHEN Wei-Miao1, DING Yun-Jie1,2, XUE Fei1,3, SONG Xian-Gen1   

  1. 1. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning Province, P. R. China;
    2. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning Province, P. R. China;
    3. University of Chinese Academy of Sciences, Beijing 100049, P. R. China
  • Received:2014-09-30 Revised:2014-11-04 Published:2014-12-25
  • Contact: DING Yun-Jie E-mail:dyj@dicp.ac.cn

摘要:

由煤、天然气或生物质出发, 经合成气制乙醇等C2含氧化合物具有重要意义, 负载型Rh基催化剂是实现该过程最有效的催化剂. 助剂的选择尤其重要, 其中Fe、Mn、Li的助催化作用最为显著, 人们对此进行了长期而有效的研究, 有关观点也很难统一,但相关总结性的报道不多. 因此,本文系统综述了这三种常见助剂催化作用的研究进展. 结果表明, 这些助剂的作用与其所处的催化体系、制备方法等密切相关, 后者直接影响了助剂-金属-载体间相互作用, 使得催化剂各种组分表现出不同存在状态, 进而影响它们在CO加氢各基元步骤中的催化作用.本文可为人们全面认识这些常用助剂的作用提供有益的参考.

关键词: 铑, 合成气, C2含氧化合物, 铁, 锰, 锂, 助剂作用, CO加氢

Abstract:

There is great significance to produce C2-oxygenates such as ethanol via syngas fromcoal, natural gas or biomass frompractical and academy of view; and supported Rh-based catalysts are the most effective for this conversion. The choice of promoter is critical for obtaining high-performance catalysts, of which Fe, Mn, and Li are most widely used. The effects of promoters have been studied extensively and comprehensively, but their roles remain the subject of much debate. We review the progress on the promotion nature of Fe, Mn, and Li. The roles of these promoters depend on the catalyst systemand preparation procedures empolyed, which affect directly the interaction between Rh and promoter(s). This interaction determines the displayed structures and properties of the promoters, which behaves different effects on the elemental steps of CO hydrogenation reaction. This review is expected to deeply aid our understanding of the effects of these promoters.

Key words: Rhodium, Syngas, C2-oxygenates, Iron, Manganese, Lithium, Promoter role, Co hydrogenation

MSC2000: 

  • O643