高校化学工程学报2017，Vol.31Issue(4)：931-937,7.DOI:10.3969/j.issn.1003-9015.2017.04.025
催化裂化汽油脱二烯烃催化剂AlCl3/ATP的制备与表征
Preparation and Characterization of AlCl3/ATP Catalysts for Diene Removal from FCC Gasoline via Diels-Alder Reaction
摘要
Abstract
An attapulgite supported AlCl3/ATP catalyst was prepared by equivalent-volume impregnation. Its catalytic performance was evaluated by Diels-Alder reaction between maleic anhydride and isoprene (a typical diene in catalytic cracking gasoline). Effects of support acidification conditions, AlCl3 loading amount and calcination conditions on the activity and selectivity of catalyst were investigated. The structure of the catalyst was characterized by FT-IR spectroscopy, powder XRD, TG-DTG and BET. The results show that the surface area, pore volume and surface hydroxyl group of ATP increase obviously after acid treatment. AlCl3 reacts with surface hydroxyl groups to form active site (-O-)AlCl2, which significantly increases catalyst acidity and acid amount that leads to the improvement of catalyst activity and selectivity. The active site (-O-)AlCl2 is destroyed when the activation temperature exceeds 380℃. The optimal AlCl3/ATP preparation conditions are as follows:ATP pickling with 1.0 mol·L-1 HCl for 4 h, AlCl3 loading amount 0.75 mmol·g-1 and catalyst calcination at 250℃ for 4 h. The conversion of isoprene and selectivity of 4-MTHPA can reach to 98.8% and 93.7%, respectively.关键词
二烯烃/马来酸酐/Diels-Alder反应/AlCl3/ATPKey words
diene/maleic anhydride/Diels-Alder reaction/AlCl3/ATP分类
化学化工引用本文复制引用
梁臣,周永生,崔文龙,王建浩,王车礼..催化裂化汽油脱二烯烃催化剂AlCl3/ATP的制备与表征[J].高校化学工程学报,2017,31(4):931-937,7.基金项目
江苏省前瞻性联合研究项目(BY2012091). （BY2012091）
