Catalyst used in fatty alcohol production with fatty acid methyl ester catalyzed hydrogenation technology, preparation method thereof, and application thereof

Abstract

The invention discloses a catalyst used in fatty alcohol production with a fatty acid methyl ester catalyzed hydrogenation technology. The catalyst is composed of, by weight: 18-66% of a mixture of copper oxide and zinc oxide, 0-40% of one or two selected from manganese oxide and nickel oxide, 5-17% of alumina, and 0-45% of a carrier, wherein the carrier is diatomite or calcium carbonate. The catalyst is advantaged in environment friendliness, high activity, good product stability, and the like. The invention also discloses a preparation method of the catalyst used in fatty alcohol productionwith the fatty acid methyl ester catalyzed hydrogenation technology. The method comprises steps that: at least two soluble salts of copper, zinc, manganese, nickel, and aluminum are dissolved in water, such that a mixed solution is prepared; water, or a mixture of water and the carrier is adopted as a base solution; an aqueous solution of sodium carbonate and the mixed solution are dropped into the base solution with a co-current flow; when dropping is finished, a precipitate is obtained; the precipitate is aged, filtered, washed, dried, roasted, and pressed, such that a finished product is obtained. The preparation method is advantaged in simple technology, high operability, easy industrialization, and the like.

Description

technical field [0001] The invention relates to the field of catalysts and their preparation, in particular to a catalyst for catalytic hydrogenation of fatty acid methyl esters to fatty alcohols, a preparation method and application thereof. Background technique [0002] Fatty alcohols, especially natural high-grade fatty alcohols, are the basic raw materials for fine chemical products such as detergents, surfactants, and plastic plasticizers. There are thousands of fine chemical products produced from fatty alcohol, which are widely used in chemical industry, petroleum, metallurgy, textile, machinery, mining, construction, plastic, rubber, leather, papermaking, transportation, food, medicine and health, daily use chemical and agricultural fields. [0003] There are two main routes for the industrial production of fatty alcohols: one is to produce fatty alcohols with olefins as raw materials; the other is to use natural oils as raw materials to transesterify them with meth...

AI Technical Summary

Problems solved by technology

Although the catalyst has good catalytic activity and is a substitute for CuCr catalyst, the preparation process of the catalyst requires neutralization and gelation reaction, the preparation method is relatively complicated, there are many influencing factors, it is not easy to control, and the catalyst reproducibility is poor