Preparation method for Cu-base methanol-synthesizing catalyst large-specific-surface-area carrier

Abstract

The invention relates to a preparation method for a Cu-base methanol-synthesizing catalyst large-specific-surface-area carrier, and belongs to the technical field of preparation of catalysts. The preparation method comprises: performing reaction on a soluble aluminium salt by taking a sodium-containing base or ammonia water as a precipitating agent, so as to obtain aluminium hydroxide gel, that is, a carrier precursor; and then adding 0.5%-1.5% of a surface dispersant Arabic gum into the carrier precursor, and processing for 20-30 min under ultrasonic effect, so as to prepare the large-specific-surface-area carrier with heat stability. The carrier and a parent compound are subjected to beating mixing, filtering, baking, roasting, forming and other processes, so that a copper-serial methanol-synthesizing catalyst sample is prepared. Compared with a sample prepared by employing a conventional method, the catalyst prepared by employing the disclosed method possesses relatively large specific surface area, and thus the catalyst possesses relatively good activity and heat stability.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a method for preparing a Cu-based methanol synthesis catalyst with a large specific surface support. Background technique [0002] Methanol is an important organic chemical raw material and a clean alternative fuel, which has a wide range of uses in chemical, pharmaceutical, light industry, textile and other industries. Among the world's basic organic chemical raw materials, the consumption of methanol is second only to ethylene, propylene and benzene, ranking fourth. The global methanol industry generally presents a momentum of rapid development. It is estimated that the global methanol production capacity will exceed 100 million tons by 2015, and many authoritative organizations believe that the growth rate of global methanol production capacity will remain above 5.6% in the future. [0003] The production of methanol mainly adopts the catalytic react...

AI Technical Summary

Problems solved by technology

The traditional carrier is generally finished alumina or self-made aluminum hydroxide gel. The synthetic methanol catalyst prepared by this method has a small specific surface area, low thermal stability and short service life.

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