Catalyst for preparing synthesis gas by reforming methane and carbon dioxide and preparation method thereof

Abstract

The invention discloses a catalyst for preparing synthesis gas by reforming methane and carbon dioxide and a preparation method of the catalyst. The catalyst comprises an active component, an auxiliary agent and a carrier component, wherein the active component is one or more of nickel and cobalt and an auxiliary agent Zr, La, Ce, Co, Mo or V, and Mo mainly exists in the form of MoO3, the carriercomponent is modified aluminum oxide, and the raw materials comprise, by weight, 4-8% of the active component, 80-91% of the carrier component and 5-12% of the auxiliary agent. The invention disclosesa catalyst for preparing synthesis gas by reforming methane and carbon dioxide and a preparation method thereof. Ammonium molybdate and a soluble aluminum-containing compound are used for carrying out modification treatment on an aluminum oxide carrier; the stability of the alumina carrier in the use process is improved, and metal active components in the catalyst can be uniformly distributed onthe surface of the carrier, so that the double functions of sintering resistance and carbon deposition resistance of the catalyst are improved while a good catalytic effect of the catalyst is kept.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a catalyst for producing synthesis gas by reforming methane and carbon dioxide and a preparation method thereof. Background technique [0002] Methane is widely distributed in nature and is the main component of natural gas. It also exists in large quantities in shale gas and combustible ice, and its reserves are abundant. At the same time, methane is also one of the important greenhouse gases. Carbon dioxide gas is the main cause of the greenhouse effect, but the carbon dioxide emitted by humans into the atmosphere is increasing year by year. How to deal with these carbon dioxide and alleviate the greenhouse effect has become a common challenge for all mankind. The reforming reaction of methane and carbon dioxide consumes two greenhouse gases, methane and carbon dioxide, and produces a synthesis gas with a low H2 / CO ratio, which is suitable for downstre...

AI Technical Summary

Problems solved by technology

[0003] In the traditional catalytic reforming of methane and carbon dioxide to synthesize gas, the carrier mainly exists in the form of metal oxide or activated carbon structure. In the high-temperature sintering after the reaction with active components and additives, the stability of the carrier is poor. The effect of anti-sintering and anti-carbon deposition in the high-temperature sintering process is poor, which cannot meet the needs of the current stage