Mesoporous composite copper catalyst for preparing carbon monoxide from methanol as well as preparation method and application of mesoporous composite copper catalyst

Abstract

The invention provides a mesoporous composite copper catalyst for preparing carbon monoxide from methanol as well as a preparation method and application of the mesoporous composite copper catalyst. The preparation method comprises the following steps: stirring and mixing a triblock copolymer P123, deionized water and hydrochloric acid, successively adding n-butyl alcohol and fumed silica powder or a tetraethoxysilane solution to form gel, and carrying out hydrothermal treatment, suction filtration, washing and roasting to obtain a hard template agent; dispersing the hard template agent in deionized water, adding an active component precursor, conducting stirring, then adding a hydrogen peroxide solution, and fixing the volume to obtain a precursor solution; mixing ammonia water with an ammonium carbonate solution to obtain a precipitant solution; then adding a precursor solution, adjusting the pH value, and conducting standing to obtain a suspension; and conducting aging, carrying out vacuum suction filtration, conducting filtering and washing, conducting drying, conducting roasting and pre-decomposing, conducting roasting again, conducting infiltrating, and sequentially conducting washing and drying to obtain the mesoporous composite copper catalyst for preparing carbon monoxide from methanol. The preparation method effectively solves the problems of low atom utilization rate, catalyst deactivation caused by easy carbon deposition and the like in the prior art.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a mesoporous composite copper catalyst for producing carbon monoxide from methanol and a preparation method and application thereof. Background technique [0002] As the main component of synthesis gas and various coal gases, carbon monoxide is an important raw material for the synthesis of basic organic chemical products and intermediates. It can produce almost all basic chemicals, such as alcohols, acids, anhydrides, esters, aldehydes, ethers, Amines, alkanes and alkenes etc. At the same time, various homogeneous reaction catalysts required for organic chemical production can be prepared by utilizing the properties of carbon monoxide and transition metals to generate metal carbonyls or metal carbonyl derivatives. [0003] The target products of methanol cracking to carbon monoxide technology are CO and H 2 , the reaction temperature is 200-300 ° C, an...

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Problems solved by technology

[0005] Aiming at the above-mentioned problems existing in the prior art, the present invention provides a mesoporous composite copper catalyst for producing carbon monoxide from methanol and its preparation method and application. Mesopores are formed in the catalyst through a hard template, which increases the specific surface area of ​​the catalyst and effectively It solves the problems of low atom utilization rate and easy carbon deposition causing catalyst deactivation in the prior art

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