Silicon-aluminum molecular sieve catalyst, and preparation and application thereof
AssigneesChina Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology, Sinopec
InventorsWeimin Yang, Darui Wang, Hongmin Sun, Wei Liu, Mingyao Huan, Mingwei Xue, Junlin He
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Abstract
An aluminosilicate molecular sieve catalyst, its preparation and application thereof are provided. The catalyst shows a desorption curve having three peaks P1, P2 and P3 in its NH3-TPD pattern. The desorption temperatures corresponding to the summits of the three peaks P1, P2 and P3 are respectively in a range of 180-220° C., 250-290° C. and 370-410° C. The catalyst shows a higher activity, selectivity and stability when used for producing alkylaromatic hydrocarbons by gas-phase alkylation of aromatics with olefins.
Claims17
An aluminosilicate molecular sieve catalyst having a desorption curve having three peaks P1, P2 and P3 in NH3-TPD pattern thereof, and desorption temperatures corresponding to the summits of the three peaks P1, P2, and P3 are in a range of 180-220° C., 250-290° C., and 370-410° C., respectively,
- wherein the aluminosilicate molecular sieve is a ZSM-5 molecular sieve, and
- wherein peaks P1, P2 and P3 have peak heights H1, H2, and H3, respectively, and H1>H2>H3.
Dependencies are inferred from the claim text.