Effect of Meso-Micro-Pore Structure and Acidity of Zeolite Y on Hydroalkylation of Benzene
1. State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Shanghai Research Institute of Petrochemical
Technology, SINOPEC, Shanghai 201208, China;
2. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
Abstract Y zeolites with different meso-micro-porous structures and acidity were prepared by different post treatments. These Y zeolites were prepared into hydroalkylation catalyst, and were evaluated by benzene hydroalkylation. The experimental results showed that the catalysts with high acid concentration had high hydroalkylation activity, which was beneficial to increase the selectivity of cyclohexylbenzene (CHB) and dicyclohexylbenzene (DCHB), and the selectivity of hydrogenation production cyclohexane (CH) was decreased. However, the activity of the catalyst prepared by microporous Y zeolites gradually decreased. If the acid amount was sufficient, the catalysts prepared by mesoporous Y zeolites showed stable hydroalkylation activity. The conversion of benzene and the selectivity of alkylation products were improved. High yield of DCHB and selectivity of p-DCHB were observed. Therefore, in order to increase the hydroalkylation activity and stability of catalysts, it was not only necessary to increase the number of acidic centers, but also to increase the mesoporous ratio of zeolite.
Wang Wennian1,Wang Gaowei1,Gao Huanxin1 et al. Effect of Meso-Micro-Pore Structure and Acidity of Zeolite Y on Hydroalkylation of Benzene[J]. 化学反应工程与工艺, 2018, 34(3): 243-253.
Wang Wennian1,Wang Gaowei1,Gao Huanxin1 et al. Effect of Meso-Micro-Pore Structure and Acidity of Zeolite Y on Hydroalkylation of Benzene[J]. 化学反应工程与工艺, 2018, 34(3): 243-253.
