摘要
选取各种不同孔径的分子筛催化剂如AIMCM-41、纳米双介孔分子筛(NBMAS)和微孔分子筛HZSM-5,以异丙苯和1,3,5-三异丙苯为模型反应物,采用脉冲法考察反应温度和剂油比对催化裂化反应的影响。实验结果表明,不同反应物的催化裂化反应采用不同的催化剂、反应温度和剂油比对裂解转化率和裂解产物的分布有不同的影响。异丙苯裂化反应中,在转化率增加的同时,小分子烯烃的选择性增加,其副产物(对-二异丙苯和间-二异丙苯)的选择性降低;在1,3,5-三异丙苯的裂解反应中,随着裂解程度的加深,小分子烯烃的选择性增加,中间产物(异丙苯和二异丙苯)的选择性降低。
Different pore size molecular sieves-A1MCM - 41, nanometer mesoporous bimodal silica-alumina material as cracking catalysts were investigated, taking cumene and 1,3,5- triisopropylbenzene as model reactant. Effects of reaction temperature and catalysts/oil ratio on catalytic cracking were studied via pulse injection method. Although cracking conversions were different with different reactants on different cracking catalysts,effects of reaction temperature and catalysts /oil ratio on catalytic cracking showed similar trends. Selectivities of light products increased along with conversion, while selectivities of byproducts or intermediate -products decreased.
出处
《石油化工》
CAS
CSCD
北大核心
2004年第9期828-832,共5页
Petrochemical Technology
基金
上海市分子催化和功能材料重点实验室(复旦大学)开放基金资助项目(20030305)国家重点基础研究专项经费项目(G2000048001)国家自然科学基金资助项目(29973057)
关键词
催化裂化
分子筛
反应温度
剂油比
1
3
5-三异丙苯
异丙苯
<Keyword>catalytic cracking
molecular sieves
reaction temperature
catalysts/oil ratio
1, 3, 5 -triisopropylbenzene
cumene
