天然气化工（C1化学与化工）2016，Vol.41Issue(3)：52-57,6.
硅源对浆态床合成二甲醚Cu-Zn-Si-Al催化剂性能的影响
Effect of different silica sources on catalytic performance of Cu-Zn-Si-Al catalyst for dimethyl ether synthesis in slurry reactor
摘要
Abstract
Cu-Zn-Si-Al bi-functional catalysts were prepared by step-by-step precipitation method with TEOS and silica sol as silica source, respectively, and characterized by XRD, TPR, XPS, NH3-TPD-MS and elemental analysis. The results indicate that dif-ferent silica sources affected the catalyst performance obviously. The catalyst prepared with TEOS as silica source showed higher ac-tivity than the one prepared with silica sol as silica source, however, the latter showed higher stability in the reaction than the former. It is concluded that the dispersibility and the weak acid sites of the catalyst have great effect on it ’s activity, and the ratio of Cu+/Cu of the active components has major impact on the stability of the catalyst. In addition, no obvious loss of Cu was observed in the re-action.关键词
浆态床/二甲醚/合成/Cu-Zn-Si-Al催化剂/硅源Key words
slurry reactor/dimethyl ether/synthesis/Cu-Zn-Si-Al catalyst/silica source分类
化学化工引用本文复制引用
孙凯,唐钰,韩涛,张强,边仲凯,黄伟..硅源对浆态床合成二甲醚Cu-Zn-Si-Al催化剂性能的影响[J].天然气化工（C1化学与化工）,2016,41(3):52-57,6.基金项目
国家自然科学基金重点项目（21336006），国家自然科学基金面上项目（21176176）和高等学校博士学科点专项（优先发展领域）（20111402130002）。 （）
