Catalytic cracking catalyst containing y molecular sieve and preparation method thereof

Abstract

The invention provides a catalytic cracking catalyst containing a Y molecular sieve. The catalytic cracking catalyst containing the Y molecular sieve comprises the following components: an H-type Y molecular sieve, kaolin and an aluminum sol component; and on the basis of taking the H-type Y molecular sieve as an active component and the total weight of the catalyst, the content of the H-type Y molecular sieve is 15 to 50 percent by weight, the content of the kaolin is 40 to 60 percent by weight and the content of the aluminum sol based on Al2O3 is 10 to 25 percent by weight. The invention also provides a preparation method of the catalytic cracking catalyst containing the Y molecular sieve. When the used Y molecular sieve is prepared, a certain amount of surfactant is added into the final synthesis mixture. By adoption of the method provided by the invention, the catalytic cracking catalyst containing the high-dispersibility small-grain-size Y molecular sieve can be obtained efficiently and conveniently. Compared with the prior art, the catalytic cracking catalyst has higher catalytic activity.

Description

technical field [0001] The invention relates to a catalytic cracking catalyst containing Y molecular sieve and a preparation method thereof, in particular to a catalytic cracking catalyst containing highly dispersed Y molecular sieve and a preparation method thereof. Background technique [0002] Molecular sieves have been widely used as catalytic cracking catalysts, especially in petroleum refining and petrochemical applications. Molecular sieves, aluminum silicate, and aluminum oxide are often used as catalysts in acid-catalyzed reactions such as catalytic cracking, isomerization, and alkylation in the petroleum industry. The structural characteristics of molecular sieve determine its catalytic performance. Molecular sieve has special structural properties such as regular crystal structure, large specific surface area, uniform micropore structure, good ion exchange performance and non-skeleton components existing in the crystal structure. , making molecular sieves widely ...

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Problems solved by technology

However, none of the above patents has studied the effect of the particle size and degree of particle dispersion of the active component Y-type molecular sieve in the catalytic cracking catalyst on its catalytic cracking reaction performance.

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