摘要
在异丁烷/丁烯烷基化反应中研究了一种由杂多酸和醋酸组成的新型液体酸催化剂的催化性能,醋酸作为溶剂对杂多酸具有共协效应,系统研究了形成活性相的条件,杂多酸结晶水含量对活性相的形成和催化活性均有显著影响,这一催化体系具有与硫酸可比的催化活性.
The catalytic behaviors of a novel liquid acid catalyst (composed of heteropolyacid and acetic acid) for alkylation of isobutane with butene was investigated. As a solvent acetic acid had a synergistic effect. It enhanced the acid strength of HPA and its stability. The conditions for the formation of the catalytically active phase were studied systematically. The content of crystal water of HPA and the quantity of solvent affect the formation of active phase and the catalytic activity. Catalytically active phase consists of HPA, acetic acid and hydrocarbon produced from the reaction, as well as traces of water from the crystal water of HPA. This catalyst system is comparable to the sulfuric acid in catalytic activity.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2000年第4期378-383,共6页
Acta Chimica Sinica
基金
国家自然科学基金(29792076)九五重大项目
关键词
催化活性相
杂多酸催化剂
异丁烷
丁烯烷基化
concentrated heteropolyacid - acetic acid solution
catalytic active phase
isobutane/butylene
alkylation
