News on November 17, 2023, according to the announcement of the State Intellectual Property Office, Wanhua Chemical Group Co., Ltd. obtained a project titled "A Catalyst, Its Preparation Method and Application", Publication No. CN117065785A. The patent application date is November 2023.
The patent abstract shows that the present invention relates to the field of catalysts, and specifically relates to a catalyst that can be used for propane dehydrogenation to produce propylene, its preparation method and application. The preparation method of the catalyst includes: providing a first mixture, the first mixture includes S- 1. All-silica molecular sieve, a second silicon source, a second template agent and an active metal solution; the first mixture is aged at a temperature of -25 to 0°C to obtain a second mixture; the second mixture is A second crystallization treatment is performed to obtain a crystallized product; and the third mixture including the crystallized product is shaped and subjected to a second roasting treatment to obtain the catalyst. The molecular sieve catalyst according to one embodiment of the present invention can be used for propane dehydrogenation (PDH) to produce propylene. Compared with traditional PDH catalysts, it can simplify the regeneration process of traditional propane dehydrogenation catalysts, reduce carbon deposit content, and extend the single cycle life of the catalyst. usage time.
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