摘要
Benzene alkylation process is a typical catalytic reaction. When the reaction is carried out in gas phase or liquid phase, obvious catalyst deactivation is observed. This paper aims at slowing down catalyst deactivation of benzene alkylation reaction by taking advantage of some special properties of supercritical fluids (higher solubility than gases and higher diffusibility than liquids). The results indicate that when the reaction condition is above the critical point of the mixed reactants, the coke precursors (polynuclear aromatics) which directly deactivate catalyst can be removed by dissolution in the supercritical fluids, which leads to a longer catalyst life.
Benzene alkylation process is a typical catalytic reaction. When the reaction is carried out in gas phase or liquid phase, obvious catalyst deactivation is observed. This paper aims at slowing down catalyst deactivation of benzene alkylation reaction by taking advantage of some special properties of supercritical fluids (higher solubility than gases and higher diffusibility than liquids). The results indicate that when the reaction condition is above the critical point of the mixed reactants, the coke precursors (polynuclear aromatics) which directly deactivate catalyst can be removed by dissolution in the supercritical fluids, which leads to a longer catalyst life.
出处
《化工学报》
EI
CAS
CSCD
北大核心
1993年第4期502-505,共4页
CIESC Journal
基金
国家自然科学基金
石油化工总公司顾问基金资助项目
关键词
超临界液体
苯烃化
分子筛催化剂
supercritical fluid, benzene-alkylation, zeolite catalyst, coke precurcor
