摘要
研究甲醇催化脱氢ＺｎＯ／ＳｉＯ＿２催化剂及其添加剂的助催效应，并用ＥＤＡＸ和ＴＰＤ─ＭＳ法表征催化剂表面性质．结果表明：添加剂对甲醛产率的影响次序为Ｎｉ＞＞Ｍｇ＞Ｌｉ；不同制备方法改变表面Ｚｎ：Ｓｉ比．根据热力学平衡和主付反应产物的分布讨论了反应推理．
silica-supported ZnO catalysts on catalytic conversion of methanol and thepromoting effects of additives have been studied. The surface prorerties of catalysts were charac-terized by EDAX and TPD-MS methods. The results showed that the HCHO yield decreased inthe order as follows Ni>>Mg>Li additives and that the ratio Zn:Si on the surface of catalysts canbe changed by preparation metheds. Based on thermedynainic equilibrium and prodacts distribu-tion of the reaction,reaction mechanism were discussed.
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
1995年第2期209-213,共5页
Journal of Xiamen University：Natural Science
基金
厦门大学固体表面物理化学国家重点实验室资助项目
关键词
甲醇
甲醛
脱氢
催化剂
反应机理
Methanol,Formaldehyde,Dehydrogenation, catalysts, Reaction mecha-nism
