Wide-temperature sulfur-tolerance shift catalyst and preparation method therefor

The invention provides a wide-temperature sulfur-tolerance shift catalyst and a preparation method therefor. The shift catalyst comprises a carrier and an active component, wherein the carrier is a roasted product of hydrotalcite, and the active component is cobalt and molybdenum. According to the wide-temperature sulfur-tolerance shift catalyst and the preparation method therefor, disclosed by the invention, the roasted product of magnesium aluminum hydrotalcite is used as the carrier for preparing the shift catalyst for the first time, so that the prepared shift catalyst has high hydrability resistance, high heat stability, and large specific surface area; compared with the shift catalyst in the prior art, the shift catalyst disclosed by the invention has better catalytic activity; even under the circumstance of low load amount of the active component, the shift catalyst disclosed by the invention is still high in catalytic activity for a water-gas shift reaction, and the conversion rate of CO can reach 87.62%.