Catalyst for catalytic decomposition of hydrogen iodide and preparation method thereof

Abstract

The present invention relates to a hydrogen iodide catalytic decomposition catalyst and a preparation method thereof which belong to the technical field of catalyst preparation. The catalyst consists of carbon nanotube, carbon molecular sieve, graphite, carbon fiber and black carbon as supports to load active metal platinum and a second active metal which is palladium, iridium, ruthenium, rhodium, molybdenum, cobalt or nickel. The weight percentage content of the active metal platinum in the catalyst is 0.05 percent to 50 percent, and the weight percentage content of the second active metal in the catalyst is 0 percent to 20 percent. The supports of the carbon nanotube or the carbon molecular sieve are dipped in mixture solution of a compound containing the platinum and a second metal element in a dipping method to be dried to obtain a target catalyst. The catalyst is not required to be calcined and reduced and can be directly used in hydrogen iodide catalytic decomposition reaction. The method has the advantages of simple preparation technology, low cost and the high hydrogen iodide catalytic decomposition activity of the catalyst.

Description

technical field [0001] The invention relates to a catalyst for catalytic decomposition of hydrogen iodide and a preparation method thereof, belonging to the technical field of catalyst preparation. Background technique [0002] Hydrogen energy is considered to be the most ideal secondary energy source, and the active development of hydrogen energy has become the energy strategy of many countries. However, traditional hydrogen production methods such as methane steam reforming and water electrolysis have some shortcomings that are difficult to overcome. Therefore, research on clean, efficient and sustainable hydrogen production methods has increasingly become the focus of attention. The research on thermochemical cycle water splitting began in the late 1960s, and now hundreds of cycles have been reported in the literature, and the iodine-sulfur (IS) cycle for hydrogen production is considered to be one of the most promising cycles. The IS cycle was invented by the American G...

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Problems solved by technology

[0009] In order to solve the problems of poor stability and short life of the supported single metal platinum catalyst in the hydrogen iodide decomposition reaction, and in order to overcome the shortcomings of complex preparation process and high cost of catalysts for hydrogen iodide decomposition prepared by traditional methods, the present invention provides Catalyst for catalytic decomposition of hydrogen iodide and preparation method thereof

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