摘要
采用原位流动红外技术测试了ＨＺＳＭ－５分子筛原粉、粘合剂氧化铝和工业芳构化催化剂中Ｂ酸及Ｌ酸的酸度，并研究了正己烷芳构化的机理及催化剂结焦失活问题。试验发现分子筛原粉以Ｂ酸为主，氧化铝以Ｌ酸为主，催化剂中Ｂ酸Ｌ酸各占一定比例；结焦后的催化剂Ｂ酸及较强Ｌ酸下降比较明显；正己烷在芳闷化过程中生成很多物种，有环己烯、取代苯等。
The acidity of HZSM-5 of HZSM-5 zeolite, adhesive Al_2O_3 and aromatization catalyst was measured andthe reaction mechanism of n-hexane aromatization as well as catalyst deactivation through cokingwere also researched by using in-situ IR technology.It has been proved that HZSM-5 mainly con-sists of B acid,while L acid is mainly found in Al_2O_3,and both B acid and L acid exist in definiteproportion in the catalyst.The amount of B acid and the stronger L acid decreased obviously aftercatalyst coking. Cyclohexene and substituted benzene are formed in the hexane aromatization pro-Cess.
出处
《石油化工》
CAS
CSCD
北大核心
1995年第10期740-743,共4页
Petrochemical Technology
