天然气化工2012，Vol.37Issue(4)：19-24,6.
Al改性HZSM-5分子筛催化甲醇制烯烃反应研究
Study on reaction of methanol to olefins on Al-modified HZSM-5
田树勋 1拜冰阳 1季生福 1吕丹丹1
作者信息
- 1. 北京化工大学化工资源有效利用国家重点实验室,北京100029
- 折叠
摘要
Abstract
Al-modified HZSM-5 were prepared by the method of impregnating HZSM-5 with Al salt solution, and their catalytic performances in the reaction of methanol to olefins(MTO)were evaluated. The effects of Al loading amount, reaction temperature, feed gas space velocity and time on stream on the reaction were investigated. The increase of Al loading leaded to the decrease of the specific surface area and the pore volume of the Al-HZSM-5, but didn' t change the framework structure. The selectivity of light olefins was obviously improved on the Al-modified HZSM-5. The best Al loading was 6% by mass, and the selectivity to light olefins on the catalyst with the best Al loading could be up to 69.3%(ethylene 42.7%, propylene 26.6%). The optimal reaction temperature and feed gas space velocity were determined as 380℃ and 786-996 ml.g-1.h-1, respectively. The catalyst lost activity gradually with
time on stream due to coking.关键词
铝改性HZSM-5分子筛/甲醇制烯烃/MTO/催化剂/乙烯/丙烯Key words
Al-modified HZSM-5 zeolite/methanol to olefins/MTO/catalyst/ethylene/propylene分类
化学化工引用本文复制引用
田树勋,拜冰阳,季生福,吕丹丹..Al改性HZSM-5分子筛催化甲醇制烯烃反应研究[J].天然气化工,2012,37(4):19-24,6.
