Water gas shift catalyst, method for preparing and using the same, and method for water gas shift reaction
By introducing ferrous and ferric iron and adding promoters into the water-gas shift catalyst, a suitable Fe2+/Fe3+ ratio and mesoporous structure are formed, which solves the problems of catalyst heat resistance and low hydrogen production rate, and realizes a highly efficient water-gas shift reaction.
CN119746864BActive Publication Date: 2026-09-22CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information
- Application Number
- CN202311283716.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-28
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2043-09-28
AI Technical Summary
Technical Problem
Existing water-gas shift catalysts suffer from poor heat resistance and activity, low hydrogen production rate, severe chromium contamination, and complex preparation processes.
Method used
Alumina is used as a support, combined with ferrous and ferric iron as active elements, and Co, Ni, Cr, Cu or Ce are introduced as promoters. The catalyst is prepared by a one-step self-assembly method, and the Fe2+/Fe3+ ratio on the catalyst surface is controlled to form a uniform mesoporous structure.
Benefits of technology
This method improves CO conversion and hydrogen production rate under high air velocity conditions, has high activity retention rate after high temperature treatment, and is simple to prepare without chromium pollution.
✦ Generated by Eureka AI based on patent content.
Abstract
The application relates to the technical field of water vapor shift, and discloses a water vapor shift catalyst, a preparation method and application thereof, and a water vapor shift reaction method, wherein the catalyst comprises aluminum oxide, active elements and auxiliary elements; the auxiliary elements are selected from at least one of Co, Ni, Cr, Cu and Ce; the active elements comprise divalent iron and trivalent iron, and the atomic ratio of the divalent iron and the trivalent iron on the surface of the catalyst is not less than 0.3 measured by XPS. The catalyst is applied to a water vapor shift reaction, can be suitable for a low water-gas ratio condition, has a high CO conversion rate and a high hydrogen production rate under a high air speed condition, has good heat-resistant activity, and has a high activity retention rate after high-temperature treatment.
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