石油化工2016，Vol.45Issue(6)：671-676,6.DOI:10.3969/j.issn.1000-8144.2016.06.005
低碳烃芳构化催化剂的再生
Regeneration of ZSM-5 zeolite catalyst for light hydrocarbon aromatization
蒙根 1许中强 1金永明 1朱明 1钟思青 1陆丽元1
作者信息
- 1. 中国石化 上海石油化工研究院，上海 201208
- 折叠
摘要
Abstract
An inactivated ZSM-5 zeolite catalyst which was used in light hydrocarbon aromatization was regenerated by means of thermal analysis instrument. The effects of coke-burning temperature and regenerating O2volume fraction on the coke-burning process were investigated. The fresh,inactivated and regenerated catalysts were characterized by means of XRD,Py-IR and N2 adsorption-desorption. The results showed that the optimum conditions for the coke-burning of the inactivated catalyst were temperature of 550℃ and O2 volume fraction of 10%-20%. The coke-burning regeneration of the inactivated ZSM-5 zeolite catalyst(after the aromatization 120 min) approximately accorded the first order reaction kinetics and its apparent activation energy was 139.5 kJ/mol. The characterization results indicated that the crystal phase of the regenerated catalyst was similar to that of the fresh catalyst. Compared with the fresh catalyst,the BET specific surface area,the total B acidity and L acidity of the regenerated catalyst were recovered to 88.4%,81.7% and 93.3%,respectively.关键词
ZSM-5分子筛催化剂/低碳烃芳构化/失活/烧炭再生/热分析Key words
ZSM-5 zeolite catalyst/light hydrocarbon aromatization/inactivation/coke-burning regeneration/thermal analysis分类
化学化工引用本文复制引用
蒙根,许中强,金永明,朱明,钟思青,陆丽元..低碳烃芳构化催化剂的再生[J].石油化工,2016,45(6):671-676,6.
