Preparation method of catalyst for preparing methanol from synthesis gas

The invention discloses a preparation method of a catalyst for preparing methanol from synthesis gas, and belongs to the technical field of catalyst preparation. The catalyst comprises the following components in percentage by mass: 30%-70% of CuO, 10%-30% of ZnO, 5%-15% of Al2O3 and 0.1%-10% of an auxiliary agent. According to the catalyst, a pre-synthesized hydrotalcite precursor is used as a template, and the characteristic that hydrotalcite can be hydrated in situ after being roasted is utilized, so that subsequent ordered distribution of Cu and Zn components on a lamellar structure is realized. Furthermore, by utilizing the confinement effect of the hydrotalcite lamellar structure, the active components of the catalyst are not easy to agglomerate in the high-temperature reaction process, and the catalyst has better heat-resistant stability compared with the traditional catalyst with spherical particle microstructure. 一种合成气制甲醇催化剂的制备方法，其属于催化剂制备的技术领域。该催化剂的组分包含CuO、ZnO、Al2O3，以及助剂成分，其中以质量分数计算，CuO含量为30%~70%，ZnO