A kind of amorphous metal powder catalyst for decomposing water to produce hydrogen and preparation method thereof

Abstract

The invention discloses an amorphous metal powder catalyst for decomposition of water into hydrogen and a preparation method of the amorphous metal powder catalyst. The preparation method comprises the steps that 1, a hydrotalcite-like compound, a molybdenum-containing compound and a tungsten-containing compound are weighed according to the metal ion molar ratio of 1:1:(0.01-1) and mixed to obtain mixed powder; 2, 35-60 L of mixed solution is weighed for use on the basis of every 1 mol of metal ions in the hydrotalcite-like compound; 3, the mixed powder is added into the mixed solution to be evenly mixed, reflux heating is carried out at the temperature of 150-200 DEG C, a stirring reaction is carried out for 20-30 h, and a sediment is obtained; 4, the sediment is heated and dried at the temperature of 120-150 DEG C for 3-5 h after being cleaned, and then is roasted at the temperature of 300-400 DEG C for 2-4 h, and a catalyst precursor is obtained; and 5, the catalyst precursor is subjected to heat preservation at the temperature of 600-700 DEG C for 1.5-10 h, and then naturally cooled to indoor temperature.

Description

technical field [0001] The invention relates to a catalyst and its preparation, in particular to an amorphous metal powder catalyst for decomposing water to produce hydrogen and its preparation method. Background technique [0002] At present, the electrocatalysts used to split water and dehydrogenate basically use noble metals, or some oxides, such as RuOx and TiO 2 etc.; the preparation methods adopted in the prior art include template method, sputtering method, vapor deposition method and electrochemical deposition method. The output of the catalyst prepared each time is small, and consumes a lot of power consumption. Equipment, targets, and some raw materials are relatively expensive, which greatly increases the cost of the catalyst. Moreover, the existing catalysts are generally used in an acidic environment, have poor stability, and because the raw materials involve precious metals, the cost is high, the industrial adaptability is low, and the preparation potential is...

AI Technical Summary

Problems solved by technology

The catalyst prepared each time has a small output and consumes a lot of power consumption. Equipment, targets, and some raw materials are relatively expensive, which greatly increases the cost of the catalyst.

Moreover, the existing catalysts are generally used in acidic environments, have poor stability, and because the raw materials involve precious metals, the cost is high, the industrial adaptability is low, and the preparation potential is also small.

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