化工学报Issue(7)：2770-2775,6.DOI:10.3969/j.issn.0438-1157.2014.07.038
铈改性甲醇合成铜基催化剂的制备及其性能
Preparation and properties of cerium modified Cu-based catalysts for methanol synthesis
胡菊 1潘亚林 1黎汉生 1吴芹 1王金福2
作者信息
- 1. 北京理工大学化工与环境学院，北京100081
- 2. 清华大学化学工程系，北京100084
- 折叠
摘要
Abstract
Cerium modified Cu-based catalysts (CuZnAlCe) for methanol synthesis from syngas were prepared by anti-coprecipitation method with Na2CO3 solution as a precipitant, Cu(NO3)2, Zn(NO3)2 and Al2(NO3)3 solution as raw materials. The structure and morphology of CuZnAlCe were studied by X-ray diffraction, thermal gravimetry-differential thermal analysis, N2 adsorption-desorption measurement, scanning electron microscopy, and temperature programmed reduction. The catalytic activities of the prepared catalysts for methanol synthesis were evaluated on micro fixed-bed reaction system. It showed that the addition of Ce improved the dispersion of active sites and provided a high surface area, which play an important role in the stability and activity of CuZnAlCe. The CO conversion reached an optimum value to 47.6% over the Ce modified Cu-based catalyst at the Cu/Ce molar ratio of 1:0.02, while the catalytic activity and stability decreased when the loading of Ce was excessive. Proper loadings of Ce could improve the thermal stability of Cu-based catalysts.关键词
反加共沉淀法/铈改性/铜基催化剂/甲醇合成Key words
anti-coprecipitation/Ce modification/Cu-based catalysts/methanol synthesis分类
化学化工引用本文复制引用
胡菊,潘亚林,黎汉生,吴芹,王金福..铈改性甲醇合成铜基催化剂的制备及其性能[J].化工学报,2014,(7):2770-2775,6.
