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The water-gas shift reaction over CO_2/CuO:Operando SSITKA-DRIFTS-mass spectrometry study of low temperature mechanism

机译:CO_2 / CuO:Operando SSITKA-DRIFTS-质谱法上水煤气变换反应的低温机理研究

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摘要

An inverse CeO_2/CuO catalyst has been investigated by operando steady-state isotopic transient kinetic analysis (SSITKA) in combination with diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) under 3% CO + 3% H_2O reactant mixture at 473 K with the aim of determining intermediates involved in the water-gas shift reaction at relatively low temperatures. Among the various species detected in the infrared spectra which may be involved in the reaction, i.e. formates, copper carbonyls and carbonates, a particular type of carbonate species is identified as a reaction intermediate on the basis of detailed analysis of the spectra during isotopic exchange in comparison with the change in the corresponding isotopically labelled CO_2 product.
机译:通过操作稳态稳态瞬态动力学分析(SSITKA)结合漫反射红外傅里叶变换光谱(DRIFTS)在473 K下3%CO + 3%H_2O反应混合物的条件下研究了CeO_2 / CuO逆催化剂。确定在较低温度下参与水煤气变换反应的中间体。在红外光谱中检测到的可能与反应有关的各种物质(即甲酸酯,羰基铜和碳酸盐)中,根据对同位素交换过程中光谱的详细分析,将一种特殊类型的碳酸盐物质识别为反应中间体。与相应的同位素标记的CO_2产物的变化进行比较。

著录项

  • 来源
    《International journal of hydrogen energy》 |2014年第8期|4095-4101|共7页
  • 作者单位

    Institute de Catalisis y Pctroleoquimica, CSIC, C/Marie Curie 2, Campus de Cantoblanco, 28049 Madrid, Spain;

    CenTACat, School 0/ Chemistry and Chemical Engineering, Queen's University, Belfast BT9 5AG, UK;

    CenTACat, School 0/ Chemistry and Chemical Engineering, Queen's University, Belfast BT9 5AG, UK;

    Institute de Catalisis y Pctroleoquimica, CSIC, C/Marie Curie 2, Campus de Cantoblanco, 28049 Madrid, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    CeO_2/CuO catalyst; WGS; Operando SSITKA-DRIFTS-MS;

    机译:CeO_2 / CuO催化剂;WGS;Operando SSITKA-DRIFTS-MS;
  • 入库时间 2022-08-18 00:23:57

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