Preparation method of catalyst for catalyzing hydrolysis of ammonia borane

Abstract

The invention provides a preparation method of a catalyst for catalyzing hydrolysis of ammonia borane. The preparation method comprises the following steps: cleaning a foam material taking metal and / or alloy as a framework; placing the cleaned foam material in air or oxygen to be subjected to oxidation treatment; mixing the foam material subjected to oxidation treatment and a precursor of phosphine gas according to a preset mass ratio to form a mixture, and calcining the mixture at a first preset temperature under the protection of inert gas so as to perform phosphating treatment on the foam material subjected to oxidation treatment; and washing the phosphatized foam material, and drying at a second preset temperature to obtain the foam catalyst with the nanorods on the surface. The preparation method is simple to operate, low in cost and easy for mass production, the nanorod prepared by the method has very good catalytic activity, 65mL of H2 can be generated per minute by only needing1cm < 2 > of Ni3Fe7P nanorod foam, and the nanorod has ultrahigh stability.

Description

technical field [0001] The invention relates to the field of hydrogen storage materials, in particular to a method for preparing a catalyst for catalyzing the hydrolysis of ammonia borane. Background technique [0002] Ammonia Borane (abbreviated as AB) has a theoretical hydrogen content of 19.6 wt%, and is currently the chemical hydrogen storage material with the highest hydrogen content. It is a stable white non-toxic powder at normal temperature and pressure, and is an ideal chemical hydrogen storage material. There are three main release methods for the hydrogen in ammonia borane, which are thermal decomposition, alcoholysis and hydrolysis. Among them, the cost of the hydrolysis method is relatively low, and the reaction is stable and controllable without heating. In the presence of a suitable catalyst, 1 mol of ammonia borane can release 3 mol of H in a controlled and stable manner. 2 . [0003] Metal catalysts are used to catalyze the hydrolysis of ammonia borane. ...

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Problems solved by technology

[0006] A further object of the present invention is to solve the technical problems that the preparation method of the catalyst used to catalyze the hydrolysis of ammonia borane in the prior art is complicated, the cost is high and it is difficult to mass-produce on a large scale

[0007] Another further object of the present invention is to solve the poor technical problem of the catalyst stability that is used for catalyzing the hydrolysis of ammonia borane in the prior art

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