Catalyst for synthesizing methanol and preparation method thereof

Abstract

The invention relates to a catalyst for using CO, CO2, and H2 to composite carbinol, wherein its active components comprise Cu30-70%, Zn30-60%, and Al3-15% at mass percentages; and the catalyst is prepared by share deposit method. The inventive catalyst has high low-temperature activity and high initial activity, while its activity is increased 20-30% after heating, and its service life is prolonged with 2-4 months.

Description

Technical field: [0001] The present invention relates to a method for using CO, CO 2 and H 2 Catalyst for synthesizing methanol and its preparation method. Background technique: [0002] Methanol is an important organic chemical raw material, which is widely used in formaldehyde, ethanol, acetic acid, methyl tert-butyl ether, medicine, pesticides, etc. In recent years, with the development of C1 chemistry, the application fields of methanol have been continuously expanded, and its demand has also been continuously expanded. The development of methanol industry has a good prospect. Initially, methanol was obtained exclusively from wood dry distillation. CO, CO 2 and H 2 The synthesis of methanol began in 1923. At that time, the high-pressure method (300°C-400°C, 25Mpa-30MPa) was used in the methanol synthesis industry. The catalyst was ZnO / Cr2O3. In the early 1950s, Poland first applied ternary CuO / ZnO / Al 2 o 3 Catalysts for the synthesis of methanol. Compared with ZnO...

AI Technical Summary

Problems solved by technology

CO, CO 2 and H 2 The synthesis of methanol began in 1923. At that time, the high-pressure method (300°C-400°C, 25Mpa-30MPa) was used in the methanol synthesis industry. The catalyst was ZnO / Cr2O3. In the early 1950s, Poland first applied ternary CuO / ZnO / Al 2 o 3 Catalysts for the synthesis of methanol. Compared with ZnO / Cr2O3 catalysts, copper-based catalysts have the characteristics of low temperature, low pressure and high activity, but are highly sensitive to poisons such as sulfur and heat. With the development of gas purification technology and the improvement of thermal stability of catalysts Further improvement, the application of copper-based catalysts entered a new stage of development in the 1960s. In the late 1960s and early 1970s, my country also developed the C207 alcohol catalyst used in my country's unique alcohol process by the Nanhua Group Research Institute. At present, there are many manufacturers producing this type of catalyst, but the production process has not been improved for decades, exposing the characteristics of the catalyst with high initial activity but rapid activity decay

Images