Regular catalyst for synthesizing oxalate by carbon monoxide gaseous phase coupling preparation method and use thereof

摘要

22 Provided is a regular catalyst for synthesizing an oxalate by carbon monoxide (CO) gaseous phase coupling a preparation method and the use thereof. In the catalyst a ceramic honeycomb or a metal honeycomb is used as a skeletal carrier metal oxides are used as a carrier coating precious metals Pt Pd Ir and Rh are used as active ingredients as well as Fe Co and Ni are used as additives wherein the carrier coating accounts for 5 to 50 wt. % of the honeycomb carrier; the active ingredients of the catalyst account for 0.1 to 5 wt. % of the carrier coating; the additives of the catalyst account for 0.3 to 10 wt. % of the carrier coating; and the atomic ratio of the active ingredients to the additives is 0.1 to 3. The reaction for synthesizing the oxalate is carried out in a fixed bed reactor wherein N is used as a carrier gas the volume ratio of N: CO : nitrous acid ester is 20 80 : 5 60 : 10 40 and the retention time is 0.5 10s.