Catalyst and method for the direct synthesis of dimethyl ether from synthesis gas

摘要

Catalysts and methods for their manufacture and use for the synthesis of dimethyl ether from syngas are disclosed. The catalysts comprise ZnO, CuO, ZrO2, alumina and one or more of boron oxide, tantalum oxide, phosphorus oxide and niobium oxide. The catalysts may also comprise ceria. The catalysts described herein are able to synthesize dimethyl ether directly from synthesis gas, including synthesis gas that is rich in carbon monoxide.

主权项

1. A catalyst composition for the synthesis of dimethyl ether comprising:
about 10 to about 75 weight % CuO; about 5 to about 30 weight % ZnO; about 1 to about 30 weight % ZrO2; about 1 to about 40 weight % of one or more of boron oxide, niobium oxide, tantalum oxide, phosphorus oxide, and combinations thereof; and about 5 to about 80 weight % alumina, wherein at least a portion of alumina comprises γ-alumina and dispersible alumina having a dispersibility of at least about 40% or greater.