Porous carbon material loaded with ruthenium nanoparticles, and preparation method and application thereof

Abstract

The invention discloses a porous carbon material loaded with ruthenium nanoparticles; with glucose as a carbon source, a certain amount of nitrogen-containing compound is added, then a nitrogen-containing precursor is prepared by a hydrothermal method and then is calcined and treated to obtain a porous structural carbon material, and then the porous carbon material is loaded with metal ruthenium by an in-situ reduction method to obtain the porous carbon material loaded with the ruthenium nanoparticle material, wherein the specific surface area is in a range of 1800-2000 m<2>*g<-1>, the specific surface area of micropores is 1000-1100 m<2>*g<-1>, the micropore content is 52-55%, the pore size distribution is uniform, and the pore size distribution is 1.68-2.30 nm. A preparation method includes the following steps: 1) preparation of the nitrogen-containing precursor; 2) preparation of the porous structural carbon material; and 3) loading of the ruthenium nanoparticles and obtaining of the porous carbon material loaded with the ruthenium nanoparticles. As a catalyst for hydrolysis and hydrogen release of ammonia borane, hydrogen release is completed in 75-100 s, and the hydrogen release rate reaches 2000-3300 ml*s<-1>*g<-1>; the porous carbon material loaded with the ruthenium nanoparticles can be recycled, and the hydrogen release amount can be kept at 99-100%; the porous carbonmaterial loaded with the ruthenium nanoparticles has broad application prospects in hydrogen production materials, fuel cells and other fields.

Description

technical field [0001] The invention relates to the technical field of carbon materials and hydrogen production by catalyzing the hydrolysis of ammonia borane, in particular to a preparation method and application of a porous carbon material loaded with ruthenium nanoparticles. Background technique [0002] With the rapid development of the economy and the continuous growth of the population, the demand for energy is expanding day by day. Although fossil fuels still occupy a large proportion of the energy structure, fossil fuels are non-renewable resources and cause certain pollution to the environment. The resulting serious energy crisis has become increasingly prominent. The key to solving such problems is to develop new renewable low-carbon green energy and its efficient and clean storage and conversion technology. Hydrogen energy, as a secondary energy source with abundant reserves, high energy density, convenient use, and wide application, has attracted extensive atten...

AI Technical Summary

Problems solved by technology

By preparing porous carbon materials, materials with large specific surface area and pore size distribution are obtained, so that ruthenium nanoparticles can be uniformly dispersed on carbon materials without agglomeration, so as to realize efficient hydrogen production by hydrolysis of ammonia borane, and have good cycle performance, while solving the problem The current ammonia borane hydrolysis rate is slow, catalyst agglomeration, catalyst instability and other problems

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