Preparation method of catalyst for coproducing isopropanol and methyl isobutyl ketone by acetone hydrogenation

Abstract

The invention relates to a preparation method of a catalyst for coproducing isopropanol and methyl isobutyl ketone by acetone hydrogenation. The catalyst comprises an alumina carrier and Ni and Mg loaded on the gamma-Al2O3 carrier, and particularly comprises, by total weight, 10-18% of the Ni, 3-8% of the Mg and the balance alumina; and the BET specific surface area of the catalyst ranges from 100m<2> / g to 180m<2> / g, and the pore volume of the catalyst ranges from 0.35mL / g to 0.55mL / g. The preparation method includes steps of (1), preparing the carrier by details of weighing pseudo-boehmite powder, adding binders and extrusion assistants into the pseudo-boehmite powder, forming by strip extrusion or granulating by rotation, drying and calcining, cooling to reduce temperature so as to obtain the stripped or spherical carrier; (2), impregnating the carrier into magnesium nitrate by details of loading a magnesium additive onto the carrier by means of saturated impregnation, drying and then calcining for 2-6 hours at the temperature ranging from 400 DEG C to 500 DEG C; (3), loading the actively metallic nickel by details of impregnating for 10-24 hours and calcining for 2-6 hours at the temperature ranging from 350 DEG C to 480 DEG C; and (4), loading the actively metallic nickel again by details of drying a semi-finished product, impregnating the dried semi-finished product into impregnation liquid of nickel nitrate again, repeating the step (3) once, and calcining the semi-finished product for 2-4 hours at the temperature ranging from 400 DEG C to 450 DEG C so as to obtain the finished catalyst.

Description

technical field

[0001] The invention belongs to the technical field of catalysis; it is a method for preparing a catalyst for acetone hydrogenation to co-produce isopropanol and methyl isobutyl ketone, more specifically, the invention relates to acetone hydrogenation with nickel as the main active component of the catalyst The preparation method of the catalyst for the hydrogen synthesis of isobutanol and methyl isobutyl ketone. Background technique

[0002] Isopropanol is an important chemical product and raw material. It is mainly used as dehydrating agent and cleaning agent in pharmaceutical, cosmetics, plastics, spices, coatings and electronic industries. Isopropanol is used as a low-cost solvent and as an extractant in many industrial and consumer products. Isopropanol is also used as a solvent for oils and colloids, and in the manufacture of fishmeal feed concentrates. Additionally, low-quality isopropanol is used in automotive fuel. The production of isopropanol c...