Fatty alcohol tertiary amine load type catalyst and preparation method and application thereof

Abstract

The invention provides a preparation method of a fatty alcohol tertiary amine load type catalyst. The preparation method of the fatty alcohol tertiary amine load type catalyst comprises the followingspecific steps: premixing the following metal oxides and a carrier in parts by mass: 20-40 parts of copper oxide, 5-10 parts of nickel oxide, 0-10 parts of zinc oxide, 0-5 parts of magnesium oxide and35-75 parts of the carrier in a ball-miller, successively adding deionized water and a dispersing agent and dispersing and grinding for 1-4 hours, after filtering and drying, roasting for 2-4 hours at the temperature of 300-400 DEG C, and after grinding and hydrogen reduction, catalyzing fatty alcohol under the condition of normal pressure to react with dimethylamine so as to prepare tertiary aliphatic amine. A preparation process of the catalyst is simple, and is easy to operate, the preparation method is energy-saving and environmentally friendly, and the performance of the catalyst is good.

Description

technical field [0001] The invention belongs to the field of chemistry, and in particular relates to a preparation method of a fatty alcohol tertiary amination supported catalyst. Background technique [0002] Catalyst preparation methods generally include precipitation method, impregnation method, mixing method and ion exchange method. Among them, the mixing method is to directly mix two or more substances mechanically, which has the advantages of less investment in equipment, convenient operation, and stable chemical composition of the product. However, the dispersion and uniformity of the catalyst prepared by the direct mixing method are relatively poor, which seriously affects the catalytic performance of the catalyst. [0003] Most of the catalysts used in the alcohol-catalyzed amination reaction are composite catalysts, which are mainly composed of one or two metal elements, and other auxiliary components are added, which can be supported or unsupported, and the used s...

AI Technical Summary

Problems solved by technology

At present, such catalysts are usually prepared by impregnation or co-precipitation. Generally, the soluble nitrates of various metals are firstly heated and adjusted for alkali co-precipitation, and then aged, left standing, filtered, dried, and heated at 300-500 ° C. Calcination, grinding, sieving and other steps, often due to the difference in the amount of acid and alkali and the carrier, the various components of the catalyst have different effects on the factors that determine the performance of the catalyst, such as the dispersion, porosity and particle shape of the composite catalyst. big impact