Sheet catalyst for synthesis of dimmer acid ester and preparation method thereof

Abstract

A novel flaky catalyst for synthesizing a dimmer acid ester consists of activated clay, a promoter and an adhesive pore-forming agent, wherein the activated clay accounts for 65-85 percent, the promoter accounts for 2-10 percent, and the adhesive pore-forming agent accounts for 13-25 percent. The preparation method for the catalyst comprises the following steps of: preparing the powder of the activated clay with a particle size of 150-250 meshes; mixing the raw materials evenly according to the partition ratio; tabletting and forming; drying the mixture at 105 DEG C; calcining the mixture at 300-400 DEG C; and cooling down and packaging the mixture. The method is simple and feasible. The catalyst which has good activity and high strength is easy to be separated from products with less products carried. In addition, the catalyst is easy to be regenerated.

Description

technical field [0001] The invention belongs to a catalyst preparation method, in particular to a sheet-shaped catalyst for synthesizing dimer esters and a preparation method thereof. Background technique [0002] Generally, 200-mesh activated clay or smectite is used as a catalyst for the synthesis of dimer esters. Its catalytic activity is good, and the reaction temperature is 180-260 ° C. However, it is difficult to separate the catalyst from the product, the product is more entrained, and the catalyst regeneration is difficult. Existing literature (Zhang Shulin. Synthesis and industrial application of dimer acid [J]. Fine Petrochemical Industry, 1995, (6): 71~75) points out that the shortcoming of clay catalyst process is that clay will absorb a certain amount of polymeric acid, discard White clay not only causes product loss, but also causes environmental pollution. After searching, there is no Chinese invention patent related to the synthesis of dimer ester catalyst a...

AI Technical Summary

Problems solved by technology

[0002] Generally, 200-mesh activated clay or smectite is used as a catalyst for the synthesis of dimer esters. Its catalytic activity is good, and the reaction temperature is 180-260°C. However, it is difficult to separate the catalyst from the product, and the product is often entrained, making it difficult to regenerate the catalyst.

Existing literature (Zhang Shulin. Synthesis and industrial application of dimer acid [J]. Fine Petrochemical Industry, 1995, (6): 71~75) points out that the shortcoming of clay catalyst process is that clay will absorb a certain amount of polymeric acid, discard White clay not only causes product loss, but also causes environmental pollution

After searching, there is no Chinese invention patent related to the synthesis of dimer ester catalyst and its preparation method; in addition, there is no foreign invention patent related to the synthesis of dimer ester catalyst and its preparation method.