Coke precursor as an intermediate during the alkylation of isobutane/butene over a solid superacid  

作　　者：XIE Wenhua FU Qiang 

机构地区：[1]Research Institute of Petroleum Processing, Sinopec, Beijing 100083, China Research Institute of Petroleum Processing, Sinopec, Beijing 100083, China

出　　处：《Science China Chemistry》2004年第2期173-178,共6页中国科学（化学英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.29792070);SINOPEC.

摘　　要：Alkylation of isobutane/butene was conducted on a Br?nsted-Lewis conjugated solid superacid. It is found that some hydrocarbons accumulated on the catalyst surface. These hydrocarbons, as called coke precursor, played an intermediate role at the initial stage of the alkylation before they lead the catalyst to lose its activity. The presence of the intermediate is beneficial to the alkylation between isobutane and butene, while increase the TMP content and TMP/DMH ratio in the productsAlkylation of isobutene/butene was conducted on a Brфnsted-Lewis conjugated solid superacid.It is found that some hydrocarbons accumulated on the catalyst surface.These hydrocarbons,as called coke precursor,played an intermediate role at the initial stage of the al-kylation before they lead the catalyst to lose its activity.The presence of the intermediate is beneficial to the alkylation between isobutene and butene,while increase the TMP content and TMP/DMH ratio in the products.

关 键 词：alkylation  isobutane/butene  SOLID superacid  intermediate. 

分 类 号：O6[理学—化学]