化工学报2009，Vol.60Issue(11)：2755-2760,6.
浆态床合成二甲醚用CuZnAlSi催化剂的完全液相法制备及表征
Complete liquid phase preparation and characterization of CuZnAlSi catalysts for DME synthesis in slurry reactor
摘要
Abstract
A series of CuZnAlSi bifunctional catalysts with different SiO_2 contents were prepared by a complete liquid phase method, and the catalysts were characterized by using in-situ XPS, XRD, BET and NH_3-TPD. The catalytic performance was evaluated in a slurry reactor. Based on these results, it was deduced that SiO_2 in the CuZnAlSi catalyst could interact with A1OOH resulting in the change of some physicochemical properties, such as the pore structure and surface acidity, thus the catalytic activity for DME synthesis has got improved. It was found from the in-situ XPS characterization that the surface active species for the methanol synthesis in the process of DME production is composed by the reduced Cu~0 species and ZnO. However, the stability of the catalyst decreased owing to the introduction of SiO_2, which may due to a lower interaction among the components of Cu, Zn and Al.关键词
完全液相制备法/二甲醚/CuZnAlSi催化剂/浆态床反应器Key words
complete liquid phase preparation/ dimethyl ether/ CuZnAISi catalyst/ slurry reactor分类
化学化工引用本文复制引用
李志红,黄伟,樊金串,左志军,谢克昌..浆态床合成二甲醚用CuZnAlSi催化剂的完全液相法制备及表征[J].化工学报,2009,60(11):2755-2760,6.基金项目
国家自然科学基金项目(20471040) （20471040）
国家重点基础研究发展计划项目( 2005CB221204). （ 2005CB221204）
