Modifying the acidity of H-MOR and its catalytic carbonylation of dimethyl ether

作     者：Meixia Wang Shouying Huang Jing Lü Zaizhe Cheng Ying Li Shengping Wang Xinbin Ma 王美霞;黄守莹;吕静;程载哲;李媖;王胜平;马新宾

作者机构：Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and Technology Tianjin UniversityCollaborative Innovation Center of Chemical Science and Engineering （Tianjin） Tianjin 300072 China 

基　　金：supported by the National Natural Science Foundation of China(21325626,21406120) the Postdoctoral Science Foundation of China(2014M560181,2015T80214) 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2016年第37卷第9期

页      码：1530-1538页

摘      要：Among the reactions catalyzed by zeolites there are some that exhibit high selectivity due to the spatial confinement effect of the zeolite *** the acidity,particularly the distribution and location of the Bronsted acid sites in the zeolite is effective for making it a better catalyst for these *** prepared a series of H-mordenite（H-MOR） samples by varying the composition of the sol-gel,using different structure directing agents and ***3-TPD and IR characterization of adsorbed pyridine were employed to determine the amount of Bronsted acid sites in the 8-membered ring and 12-membered ring *** was shown that controlled synthesis was a promising approach to improve the concentration of Bronsted acid sites in MOR,even with a low Al *** an appropriate composition of Si and Al in the sol-gel favored a higher proportion of Bronsted acid sites in the 8-membered ring *** as a structure-direct agent gave an obvious enrichment of Bronsted acid sites in the 8-membered *** of dimethyl ether was used as a probe reaction to examine the modification of the acid properties,especially the Bronsted acid sites in the 8-membered ring *** was a linear relationship between methyl acetate formation and the number of Bronsted acid sites in the 8-membered ring channels,demonstrating the successful modification of acid *** results provide information for the rational design and modification of zeolites with spatial constraints.

主 题 词：Zeolite H-mordenite Modification of acidity Hydrothermal synthesis Structure-direct agent Post treatment Carbonylation of dimethyl ether 

学科分类：081702[081702] 081704[081704] 07[理学] 08[工学] 0817[工学-轻工类] 070303[070303] 0703[理学-化学类] 

核心收录：

D　O　I：10.1016/S1872-2067(16)62484-1

馆 藏 号：203194366...