A kind of preparation method of niau nano-catalyst for hydrogen production from borane ammonia

Abstract

The invention discloses a preparation method of a NiAu nano-catalyst for producing hydrogen from borane ammonia, and belongs to the technical field of preparation of transition metal and noble metal binary materials in inorganic materials. In the present invention, nickel salt and chloroauric acid are firstly dissolved in oleylamine to make a mixed solution, stirred evenly by magnetic force and gradually heated up to obtain NiAu nanoparticles through reduction; then the cleaned and dried NiAu samples are heat-treated in a hydrogen atmosphere to obtain the final NiAu nanocatalysts. The NiAu particles prepared by the invention are uniform in size, good in dispersibility, have high catalytic efficiency for borane ammonia decomposition reaction, and can be converted into a highly stable Au@NiO core-shell structure in the reaction, and obtain no less than 200 cycles of catalytic activity (under the condition of more than 70% decomposition). The NiAu prepared by the invention is a simple, efficient and stable binary metal catalyst, which can be used in catalytic fields such as fuel cells, hydrogenation reactions, and methane reforming based on borane ammonia decomposition to produce hydrogen.

Description

technical field [0001] The invention belongs to the technical field of preparation of transition metal and noble metal binary materials in inorganic materials, and in particular relates to a method for preparing NiAu binary nanoparticles. Background technique [0002] Transition metal materials are an important class of multifunctional materials, which have broad application prospects in storage devices and catalysts, and have attracted the attention of researchers. Generally, materials such as nano-platinum group (platinum, palladium, nickel) have excellent catalytic properties, and have been widely used in fuel cells in recent years. However, in the catalytic process, platinum group elements are very easily poisoned, resulting in a decrease in its catalytic performance, making it difficult for this catalyst to be widely used. In the past two decades, the rise of nanoscience and preparation technology has led researchers to discover that nanoscale gold (Au) particles can h...

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Problems solved by technology

However, in the catalytic process, platinum group elements are very easily poisoned, resulting in a decrease in its catalytic performance, making it difficult for this catalyst to be widely used.

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