Auxiliary agent-modified catalyst for CO-CO2 co-hydrogenation synthesis of methanol

Abstract

The invention discloses an auxiliary agent-modified catalyst for CO-CO2 co-hydrogenation synthesis of methanol. The auxiliary agent-modified catalyst comprises Cu, Zn, Al, Zr and Mg. A mass ratio of (CuZnAl): (ZrMg) is (90.0 to 99.9%): (0.1 to 10%). A mole ratio of Cu: Zn: Al is m: n: l, wherein m is in a range of 5.0 to 6.5; n is in a range of 3.0 to 4.5; and l is equal to 10-m-n. A mole ratio of Zr: Mg is (1.0 to 3.0): (1.0 to 2.0). The auxiliary agent-modified catalyst has a high carbon conversion ratio in CO-CO2 co-hydrogenation synthesis of methanol, and has high selectivity of methanol in products. A preparation method of the auxiliary agent-modified catalyst has simple processes and is prone to industrialization.

Description

Technical field

[0001] The present invention relates to a catalyst, in particular to CO and CO 2 The invention discloses an auxiliary modified catalyst for synthesizing methanol by co-hydrogenation, which belongs to the technical field of catalysts. Background technique

[0002] Methanol is an extremely important chemical raw material, widely used in organic synthesis, medicine, fuel, dyestuff, its output is second only to synthetic ammonia and ethylene. Methanol is not only C 1 The basic substance of the chemical industry, hundreds of chemical products can be produced from methanol, and it is also an important potential substitute clean fuel. With the change of energy structure, methanol will play a pivotal role in the future society.

[0003] From the research situation at home and abroad, the use of CO alone to convert methanol is the main research direction of industrial waste gas recycling. In many cases, however, CO 2 CO and CO coexist in gas sources, such as coa...

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