燃料化学学报2012，Vol.40Issue(6)：721-726,6.
全氢菲在分子筛催化剂上环烷环开环反应的研究
Naphthenic ring opening of perhydrophenanthrene over zeolite catalysts
摘要
Abstract
Experiments of perhydrophenanthrene cracking over zeolite catalysts were conducted in a small fixed fluidized bed (FFB) unit. Effects of Y and ZSM-5 zeolite catalysts, temperature and catalyst/oil ratio on naphthenic ring opening reactions of perhydrophenanthrene were examined. The results show that products from naphthenic ring opening reactions of perhydrophenanthrene over zeolite catalysts are monocyclic or dicyclic cycloparaffin (cyclohexane, decalin), which is further converted into isoparaffin (2-methylpenptane, methyl hexane) by side chain breaking, or into monocyclic aromatics (benzene, C1_4 alkyl benzene) by hydrogen transfer, or into dicyclic aromatics (tetrahydronaphthalene, naphthalene, alkyl naphthalene) by deep hydrogen transfer. Products from dehydrogenation condensation reactions of perhydrophenanthrene are polycyclic aromatics with more than 3 rings (phenanthrenes, pyrenes) and coke. Due to the influence of naphthenic diffusion and adsorption on catalysts, selectivity of the naphthenic ring opening reaction is higher over Y catalyst than that over ZSM-5 catalyst. The relative ratio of naphthenic ring opening reactions to dehydrogenation condensation reactions, abbreviated as s (NRO) /s (DHC), is higher over Y catalyst than that over ZSM-5 catalyst. At the weight hourly space velocity of 10 h-1, temperature of 475 ~ 550 ℃, catalyst/oil mass ratio of 3. 0 -9.0, reactions of bimolecular hydrogen transfer and dehydrogenation condensation became stronger, and selectivity of the products from naphthenic ring opening reactions decreases with the rising of temperature or catalyst/oil ratio over Y catalyst.关键词
多环环烷烃/分子筛催化剂/催化裂化/全氢菲/环烷环开环Key words
polycyclic naphthene/ zeolite catalysts/ catalytic cracking/ perhydrophenanthrene/ naphthenic ring opening分类
化学化工引用本文复制引用
唐津莲,许友好,汪燮卿..全氢菲在分子筛催化剂上环烷环开环反应的研究[J].燃料化学学报,2012,40(6):721-726,6.基金项目
国家重点基础研究发展规划(973计划,2006CB202501). （973计划,2006CB202501）
