Catalyst applicable to synthesis of methanol by multi-component mixed gas as well as preparation method and application of methanol catalyst

Abstract

The invention discloses a catalyst applicable to synthesis of methanol by multi-component mixed gas. The methanol catalyst comprises the following components in percentage by mass: 25%-65% of CuO, 20%-40% of ZnO, 15%-35% of Al2O3 and 0-5% of an aid M, wherein the aid M is one or a mixture of more of Zr, Si, La, Mn, Ce, Cr and Ti oxides. Besides, the invention further discloses a preparation method and application of the methanol catalyst. The methanol catalyst has the beneficial effects that the preparation process is simple, the repeatability is good, and the industrial large-scale production is easily realized; the methanol catalyst has the characteristics of being high in specific surface area, easy to form, high in mechanical strength after forming, applicable to multi-component mixed gas of different proportions, high in conversion rate of carbon dioxide and selectivity of methanol and small in generation rate of by-products; by adjusting the constitution proportion of the multi-component mixed gas, the heat release intensity of the catalyst can be adjusted, and therefore, the balance between heat release and heat transfer capacity is achieved, so that the operation stability of the catalyst is achieved, and the service life of the catalyst is prolonged.

Description

technical field [0001] The invention belongs to the field of inorganic chemistry, and in particular relates to a catalyst for synthesizing methanol, in particular to a catalyst suitable for synthesizing methanol from multi-element mixed gas with different ratios, as well as its preparation method and application. Background technique [0002] CO, CO emitted from industrial production 2 with H 2 Industrial waste gas is not only the culprit of environmental pollution but also a rich and renewable carbon resource. It has extremely important practical significance to use it efficiently and rationally, and has attracted extensive attention of researchers in many fields such as environmental protection, chemical industry and energy. For ordinary methanol synthesis catalysts, if using rich CO, CO 2 with H 2 Synthesis of methanol with multi-component mixed gas, the study found that due to CO 2 The inertness and thermodynamic unfavorable factors make CO 2 It is difficult to act...

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Problems solved by technology

However, it did not study the influence of inert gas on the catalytic reaction, and there is a certain gap between the model gas used and the multi-component mixed gas used in the actual industrial methanol synthesis

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