Preparation method of solid acid alkylation catalyst

Abstract

A forming method of a solid acid alkylation catalyst is characterized by comprising the following steps: mixing a molecular sieve and acidic aluminum sol with the pH value of less than 5, the particlesize of 20-300nm and the alumina concentration of 5-20%, grinding the mixture and carrying out extrusion molding. The method is simple and easy to implement, the specific surface area and pore channels of the molecular sieve are not influenced, the acidity of the molecular sieve is not damaged, and the obtained forming agent has high strength and shows high activity and stability in alkylation reaction, especially isobutane / butene alkylation reaction.

Description

technical field

[0001] The invention relates to a preparation method for solid acid alkylation, the obtained catalyst and its application. Background technique

[0002] The alkylation reaction of isobutane and butene is an important process in the petroleum refining industry to produce high-octane gasoline components. As an ideal high-octane gasoline blending component, this alkylated oil has octane High alkane number, low sensitivity, low Reid method vapor pressure, no olefins, aromatics, low sulfur content.

[0003] Solid acid alkylation technology is a green alkylation technology and the most promising alkylation technology at present. The core of the solid acid alkylation process is the development of solid acid catalysts with excellent performance. At present, solid acid alkylation catalysts are mainly divided into four categories: metal halides, solid superacids, supported heteropolyacids and molecular sieves. Among them, molecular sieve catalysts are widely used in ...

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