Manufacturing method of fatty acid methyl ester hydrogenation catalyst and method for preparing the catalyst carrier

Abstract

The invention provides a method for manufacturing a copper-nickel binary catalyst for the hydrogenation of fatty acid methyl esters and non-edible oils and fats, which includes carrier SiO 2 The preparation method, and the technology of reducing copper remaining in grease. SiO prepared by the present invention 2 With fixed physical parameters, high mechanical strength and uniform particle size distribution, the SiO 2 The catalyst preparation technology of the present invention as a carrier has good repeatability, and the catalyst performance has good stability. The catalyst is easy to filter and separate, has a high specific surface area, good activity, and the iodine value can be reduced from more than 100 to Below 1, it can effectively reduce the residual Cu in the hydrogenation product and improve the quality and grade of the product.

Description

Technical field: [0001] The invention relates to a method for producing a hydrogenation catalyst used in the food industry and a carrier thereof. Background technique: [0002] Catalysts specially used for double bond hydrogenation of fatty acid methyl esters have not been reported. Since fatty acid methyl esters are derived from the transesterification of natural oils with methanol, or methyl esterification after hydrolysis of natural oils, there is no essential difference between the double bond hydrogenation of fatty acid methyl esters and the double bond hydrogenation of oils. Most of the literature reports are oil hydrogenation catalysts. The present invention is used for the catalyst of fatty acid methyl ester double bond hydrogenation is Cu-Ni / SiO 2 binary catalyst. At home and abroad, a lot of research has been done on copper-nickel binary catalysts for oil hydrogenation, and many patents have been applied for. Such as US3743662 "CATALYST FOR THE HYDROGENATION OF...

AI Technical Summary

Problems solved by technology

In addition, when using the carrier to prepare the copper-nickel binary catalyst, the process conditions and technologies such as the loading of the active component and post-treatment will also affect the interaction between the active component and the support, the crystal structure of the active component, and the active group. The particle size distribution of microcrystals and the density distribution of active centers directly affect the microstructure and macroscopic properties of the catalyst, the activity and selectivity of the catalyst, the repeatability of catalyst preparation and the stability of application, and the hydrogenation of copper. Residues in the product and quality of hydrogenated fats and oils

However, domestic and foreign literatures have no clues about the preparation technology of copper-nickel binary catalyst carrier for hydrogenation of fatty acid methyl ester and non-edible oil, the loading technology of active components and the influence of preparation conditions on the residual amount of copper in hydrogenation products. see the report