Mixed oxide based catalyst for the conversion of carbon dioxide to syngas and method of preparation and use

摘要

The invention relates to a catalyst and process for making syngas mixtures including hydrogen, carbon monoxide and carbon dioxide. The process comprises contacting a gaseous feed mixture containing carbon dioxide and hydrogen with the catalyst, where the catalyst comprises Mn oxide and an auxiliary metal oxide selected from the group consisting of La, Ca, K, W, Cu, Al and mixtures or combinations thereof. The process enables hydrogenation of carbon dioxide into carbon monoxide with high selectivity, and good catalyst stability over time and under variations in processing conditions. The process can be applied separately, but can also be integrated with other processes, both up-stream and/or down-stream including methane reforming or other synthesis processes for making products like alkanes, aldehydes, or alcohols.

主权项

1. A process of making a syngas mixture including hydrogen, carbon monoxide and carbon dioxide under isothermal conditions, comprising a step of contacting a gaseous feed mixture including carbon dioxide and hydrogen in the presence of a catalyst, where the catalyst comprises a supported manganese oxide catalyst including one more auxiliary metals selected from the group consisting of La, Ca, K, W, Cu, and Al.