高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (1): 98.

• 论文 • 上一篇    下一篇

合成气制醇钼硫基催化剂上吸附物种的红外光谱表征

杨意泉, 许金来, 林国栋, 廖远琰, 袁友珠, 张鸿斌   

  1. 厦门大学化学系、固体表面物理化学国家重点实验室, 厦门, 361005
  • 出版日期:1994-01-24 发布日期:1994-01-24
  • 基金资助:

    国家自然科学基金

IR Spectra of Chemisorbed Species on MoSx-based Catalysts for Mixed Alcohols Synthesis from Syngas

YANGY Yo-Quan, XU Jin-Lai, LIN Guo-Dong, LIAO Yuan-Yan, YUAN You-Zhu, ZHANG Hong-Bin   

  1. Department of Chemistry, State Key Laboratory for Physical Chemistry of Solid Surface, Xiamen University, Xiamen, 361005
  • Online:1994-01-24 Published:1994-01-24

摘要: 利用现场FTIR方法对合成气制混合醇钼硫基催化剂上吸附物种进行了表征。结果表明,在反应条件下,非负载或SiO2负载的碱助钼硫基催化剂上主要的CO加氢中间物种是HC=O、CH2、HCOS、O-CH3及S-CH3,而HCOO-和CO32-的红外指纹谱带却十分弱,难以辨识。推断了该催化体系的反应历程。

关键词: 合成气转化, 混合醇, 钼硫基催化剂, FTIR表征

Abstract: The IRspectra of chemisorbed species on SiO2 supported,or unsupported,alkali-promoted MoSx-based catalysts for the mixed alcohols synthesis from syngas were taken in-situ under the reaction conditions of 538 K,2.0 MPa,and flowing feed stream of syngas(CO/H2=1,V/V),and ex-situ at 323 K,atmospheric pressure and under the controlled atmosphere.The results indicate that the detectable surface intermediates of CO hydrogenation are and that the IRbands as the fingerprints of and are ambiguous,and too weak to be sure of assignments.Based upon the results of the present IR investigation,the major reaction pathways of the syngas conversion over the MoSx-K+ catalysts are suggested.

Key words: Syngas conversion, Mixed alcohols, MoSx-based catalysts, FTIR characterization

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