摘要
对比了SO_4^(2-)/Zr O_2-Al_2O_3(SZA)催化剂和H-USY分子筛的物性结构,并在固定床微型反应装置上考察了2种催化剂酸性质对正丁烷异构化反应的影响。结果表明:H-USY分子筛的比表面积和孔体积明显高于SZA催化剂;SZA催化剂在150～250℃可催化正丁烷发生异构化反应,并以单分子反应为主,而H-USY分子筛在350～450℃才能催化正丁烷发生异构化反应,且单/双分子反应机理并存;SZA催化剂的失活速率明显大于H-USY分子筛,但其表面积炭量少于H-USY分子筛。
The physical structures of SO4^2-/ZrO2-Al2O3(SZA)catalyst and H-USY zeolite were comparatively studied,and the effects of acid properties of two catalysts on properties of n-butane isomerization were investigated on a fixed bed micro-reactor.The results showed that the specific surface area and pore volume of H-USY zeolite were obviously larger than those of SZA catalyst;SZA catalyst at 150-250℃ could catalyze n-butane resulting in isomerization,mainly in monomolecular,while H-USY zeolite at 350-450℃ could catalyze n-butane leading to isomerization, and the reaction mechanisms of monomolecular and bimolecular coexisted.Furthermore,SZA catalyst with lower amount of coke deposits had higher deactivation rate,compared with that of H-USY zeolite.
作者
张文芳
王鹏照
杨朝合
李春义
ZHANG Wen-fang;WANG Peng-zhao;YANG Chao-he;LI Chun-yi(State Key Laboratory of Heavy Oil Processing,China University of Pertroleum (East China),Qingdao 266580,China;National Engineering Research Center of Chemical Fertilizer Catalyst,Fuzhou University,Fuzhou 350002,China)
出处
《石化技术与应用》
CAS
2019年第1期9-13,共5页
Petrochemical Technology & Application
基金
中国石油大学(华东)研究生自主创新工程基金资助项目(项目编号:YCX 2018036)
