摘要
Bifunctional carbonylation catalysts were prepared by introducing both of acidic and metallic sites into zeolites, such as β, M and Y, by which tertiary butyl acid was synthesized under mild reaction conditions. The effects of reaction temperature and the copper amount as well as the acid strength on the catalytic activity were investigated. The results show that when the content of cuprous for β, M and Y are 2 35%, 2 48% and 7 13% respectively, the carbonylation activity of the related sample is the greatest. In the reaction temperature range, lower temperature is favorable for yielding acid and higher temperature is favorable for yielding ester. The catalytic activity increases with the increase of the acid strength. The in situ FT IR study shows that Cu(Ⅰ) is the metallic active site.
Bifunctional carbonylation catalysts were prepared by introducing both of acidic and metallic sites into zeolites, such as β, M and Y, by which tertiary butyl acid was synthesized under mild reaction conditions. The effects of reaction temperature and the copper amount as well as the acid strength on the catalytic activity were investigated. The results show that when the content of cuprous for β, M and Y are 2 35%, 2 48% and 7 13% respectively, the carbonylation activity of the related sample is the greatest. In the reaction temperature range, lower temperature is favorable for yielding acid and higher temperature is favorable for yielding ester. The catalytic activity increases with the increase of the acid strength. The in situ FT IR study shows that Cu(Ⅰ) is the metallic active site.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
2000年第5期431-433,共3页
基金
国家自然科学基金!(2 90 32 6 7)
广东省自然科学基金!(95 0 82 3)
清华大学一碳化工国家重点实验室和汕头大学"2 11"项目联合资
关键词
催化剂
沸石
氯化亚铜
叔丁醇
羰基化
叔碳酸
bifunctional catalyst, zeolite, cuprous chloride, t butanol, carbon monoxide, carbonylation, t butyl acid
