Mesoporous material and preparation method thereof and synthesis methanol catalyst and preparation method thereof

Abstract

The invention relates to a mesoporous material and a preparation method thereof, and a synthesis methanol catalyst and a preparation method thereof, the mesoporous material is composed of the following components by weight percentage: 1%-30% of CuO, 0.5%-20% of Zn and 50%-98.5% of Al2O3; the preparation method of the mesoporous material comprises the following steps: dissolving soluble salts of cupper, zinc and aluminum in deionized water, uniformly mixing the solution with template agent to form blended solution, adjusting pH value, and then, transferring the blended solution to a reaction kettle to generate blue floccus, washing the floccus with water, and filtering to get filter cakes, drying, baking for 2-100 hours, and getting the mesoporous material; the synthesis methanol catalyst is composed of the following components by weight percentage: 30%-70% of CuO, 15%-40% of Zn and 5%-30% of Al2O3; the preparation method of the synthesis methanol catalyst comprises the following steps: using the mesoporous material as a carrier, depositing the Cu and the Zn on a surface of the carrier by a deposition precipitation method to form the parent substance of the synthesis methanol catalyst, and orderly washing, drying, prilling, roasting and shaping the parent substance to get the synthesis methanol catalyst.

Description

technical field [0001] The invention relates to a mesoporous material and a preparation method thereof, a catalyst for synthesizing methanol and the preparation method thereof, and belongs to the technical field of organic chemical synthesis. Background technique [0002] Cu-Zn-Al 2 o 3 Catalysts are widely used in industrial production processes such as low-pressure methanol synthesis reaction, CO water-gas shift reaction, and methanol steam reforming to produce hydrogen. Larger scale and higher level of automation, Cu-Zn-Al 2 o 3 The performance of the catalyst has put forward higher and higher requirements. The development of high-performance catalysts undoubtedly has extremely huge economic value and social benefits. requirements, the Cu-Zn-Al used 2 o 3 Catalysts are generally prepared by coprecipitation. For example, DD296855 discloses a preparation method for synthesizing methanol catalysts. They co-precipitate aqueous solutions of soluble salts of copper, zinc...

AI Technical Summary

Problems solved by technology

The performance of the catalyst prepared by the co-precipitation method is not satisfactory, such as a small specific surface, resulting in a low activity of the catalyst

Due to the limitations of the preparation method itself, it is difficult to significantly improve the performance of the catalyst by the co-precipitation method, and a new catalyst preparation method must be sought

[0003] Mesoporous molecular sieve is a new type of functional material with regular pore structure, and its specific surface area is generally 500m 2 More than / g, the main obstacle of the current mesoporous materials as catalysts is the thin pore wall (2-3nm), poor thermal stability, and easy collapse of the structure; another disadvantage is the low content of heteroatoms (generally less than 20 %), when the content of heteroatoms is high, it is difficult to form a mesoporous material with stable structure. Heteroatom content is the key to its application in the field of catalysis

Images