Mixed rare-earth modified methane steam reformed nickel-based catalyst and preparation method thereof

Abstract

The invention provides a mixed rare-earth modified methane steam reformed nickel-based catalyst and a preparation method thereof. According to the mixed rare-earth modified methane steam reformed nickel-based catalyst, nickel nitrate and the like are used as precursors and are directly immersed and loaded on spherical aluminum oxide modified by mixed rare earth. The mixed rare earth is obtained by mixing two selected from lanthanum-cerium, lanthanum-yttrium, lanthanum-praseodymium, lanthanum-samarium and the like, wherein the loading weight of nickel in the catalyst is 5-30% of the weight of the catalyst and the loading weight of the mixed rare earth is 0.5-10% of the weight of the catalyst; the ratio of the mixed rare earth is 7/3-3/7. With the adoption of the mixed rare earth, the separation cost of the rare earth can be greatly reduced; the preparation method of the catalyst is simple; the catalyst has the good catalytic activity and stability on reforming methane steam in a fixed bed.

Description

technical field [0001] The invention relates to a mixed rare earth modified methane steam reforming catalyst and a preparation method thereof, belonging to the technical field of petrochemical industry. Background technique [0002] A confluence of factors has increased the attractiveness of the hydrogen economy since the mid-1990s. These factors include: persistent urban air pollution, demand for lower or zero-emission vehicles, reduced need for foreign oil imports, CO 2 Emissions and global climate change, the need to store renewable electricity supplies, etc. As a clean, efficient, safe and sustainable new energy, hydrogen energy is regarded as the clean energy with the most development potential in the 21st century, and it is the strategic energy development direction of mankind. Hydrogen is an important industrial raw material and reducing agent. It is widely used in various fields of national economy, such as chemical fertilizer (synthetic ammonia, etc.), petrochemic...

AI Technical Summary

Problems solved by technology

In recent years, although China has made great progress in the development of natural gas hydrogen production equipment and catalysts, there is still a big gap with the international level in key technologies such as the development of efficient and durable catalysts.

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