Process for preparation of catalysts for catalytic decomposition of hydrogen iodide

Abstract

A preparation method for a catalyst used for catalytic decomposition of hydrogeniodide belongs to the catalyst preparation technical field. A method of immersion is first adopted by the present invention. A carrier is immersed in a dissolvable salt comprising a noble metal used for activation or a soluble acid water solution, and then dried to get an activated precursor. The mass of the noble metal for activation is 0.1 to 5 percent of the mass of the carrier. The activated precursor is added into a reducer solution to manufacture an activated substrate by reducing. Finally, the activated substrate is put in a chemical platinum plating solution to realize oriented deposition of activated platinum metal on the carrier. Thus, the catalyst for decomposition of hydrogeniodide is manufactured. The mass content of platinum in the catalyst is 1 to 50 percent. The catalyst preparation method is provided with the advantage of the good repeatability for mass production, the good platinum dispersion and the high catalytic activity. The catalyst manufactured with the method is not only applicable for the catalytic decomposing reaction of hydrogeniodide, but also can be used as the catalyst for the catalytic hydrogenation reaction.

Description

technical field [0001] The invention relates to a method for preparing a catalyst for catalytic decomposition of hydrogen iodide, belonging to the technical field of catalyst preparation. Background technique [0002] Hydrogen is not only widely used in many fields such as chemical industry, metal smelting, and electronic industry, but also is considered as the most ideal secondary energy due to its advantages of high calorific value, good combustion performance, renewable, clean and non-toxic, etc. Also known as the future energy of mankind. Therefore, 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. Hydrogen production through methane steam reforming will produce a large amount of CO 2 emissions, while hydrogen production by electrolysis of water consumes a large amount of...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problems existing in the preparation of hydrogen iodide decomposition catalysts by traditional methods: the size of metal cluster particles is difficult to control, the active metal particles are difficult to achieve high dispersion, and in the process of catalytic reaction, the active metal particles are prone to agglomeration and the catalytic activity is reduced. The invention provides a method for preparing a catalyst for the catalytic decomposition of hydrogen iodide