Catalyst for synthesizing methanol and preparation thereof

Abstract

The invention relates to a catalyst used for methanol synthesis and a preparation method thereof which belong to the field of chemical catalysts and the preparation thereof. The catalyst used for methanol synthesis is a CuO / ZnO / Al2O3 catalyst that is added with Si element and used for methanol synthesis, the catalyst consists of CuO with the mass percentage of 60 to 70 percent, ZnO with the mass percentage of 21 to 30 percent, Al2O3 with the mass percentage of 4 to 10 percent and SiO2 with the mass percentage of 1 to 3 percent. Compared with congeneric catalysts, the specific surface area andpore volume of the catalyst increase by 10 to 20 percent after being added with the Si element; reaction activity is obviously improved more than 10 percent; the catalyst has great promotion effect onthe technological progress of methyl alcohol industry. By using the catalyst, as for production devices with the same scale, the usage of catalyst is correspondingly reduced; due to high conversion rate, the recycle ratio is lowered and energy consumption is saved, thus being capable of greatly improving the production efficiency of methyl alcohol.

Description

technical field [0001] The invention relates to a catalyst for synthesizing methanol and a preparation method thereof, belonging to the field of chemical catalysts and the preparation thereof. Background technique [0002] Methanol is an important basic chemical raw material. At the same time, methanol can replace gasoline and diesel as liquid fuel for vehicles. Based on the national conditions of my country's lack of oil and rich coal, methanol projects using coal as raw material have developed very rapidly in recent years. The scale of methanol production is getting bigger and bigger. Because the activity of the catalyst is still low, the synthesis reactor is bulky, the equipment investment is high, and the operating cost is high. Therefore, the development of a high-activity methanol synthesis catalyst is of great significance to the overall technological progress of the industry. [0003] EP0864360 discloses a kind of adding ZrO 2 , SiO 2 , CuO / ZnO / Al such as Pd 2 o ...

AI Technical Summary

Problems solved by technology

The scale of methanol production is getting bigger and bigger. Because the activity of the catalyst is still low, the synthesis reactor is bulky, the equipment investment is high, and the operating cost is high. Therefore, the development of a high-activity methanol synthesis catalyst is of great significance to the overall technological progress of the industry.