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使用XRD、TPR、TPD和活性评价装置等技术设备,研究Cu-Zn-Al催化剂母体相组成对其催化性能的影响。结果表明,母体为HZ相的催化剂活性高,母体为FC相的热稳定性好,母体以ML相为主相的催化剂性能差。通过选择适宜的Cu/Zn/Al比和控制制备条件,获得适宜比例的FC、HZ、ML三相态混合母体是制备性能优良的低变催化剂的基础。制备出了活性高、热稳定性好的CO低温变换催化剂。
The effects of precursor phase composition of Cu-Zn-Al catalyst on its catalytic performance were investigated using XRD, TPR, TPD and activity evaluation equipment. The results showed that the catalyst with the precursor of HZ phase had high activity, the precursor with FC phase had good thermal stability, and the host with ML phase as the main phase had poor catalytic performance. By choosing the appropriate Cu / Zn / Al ratio and controlling the preparation conditions, obtaining the appropriate proportions of FC, HZ, ML three-phase mixed matrix is the basis for preparing low-performance catalyst with excellent performance. Preparation of a high activity, good thermal stability of CO low temperature shift catalyst.