Heterogeneous catalysis solid base catalyst and a preparation process and a use thereof

摘要

The present invention relates to a solid base catalyst including 10.0%-30.0% by weight of calcium oxide and 70.0%-90.0% by weight of zirconium oxide, in which the calcium source is CaCl₂ or Ca(NO₃)₂, and the Zirconium source is ZrOCl₂ or ZrO(NO₃)₂. The invention also provides a process for the preparation of the catalyst and a use of the catalyst in synthesizing dimethyl carbonate via heterogeneous catalysis. The catalyst shows good catalytic stability and catalytic activity, and can be separated from products easily and is reusable.