Hydrogenation and dehydrogenation catalyst as well as preparation method and application thereof

Abstract

The invention discloses a preparation method of a hydrogenation and dehydrogenation catalyst, which comprises the following steps: S1, by taking tri(4-bromophenyl)triazine as a raw material, converting one bromophenyl group into an aniline group through amination reaction; s2, under light promotion with carbon monoxide and methanol as raw materials, carrying out catalytic reaction, so that the remaining two bromophenyl groups are converted into methyl benzoate groups; s3, performing saponification and acidification reactions in sequence, so that the methyl benzoate group is converted into a benzoic acid group; s4, adding 2,5-dihydroxy benzaldehyde, and enabling a benzaldehyde functional group to react with amido to finally generate an organic ligand with a Schiff base functional group; s5, sequentially adding active nanoparticles and metal salt, and reacting the materials to obtain the catalyst which takes the active nanoparticles as an active center and takes the metal organic framework as a carrier. The catalyst is suitable for hydrogenation and dehydrogenation reaction processes of an organic liquid phase hydrogen storage material, and has the advantages of high hydrogen storage energy density, low dehydrogenation temperature and high dehydrogenation speed.

Description

technical field [0001] The invention relates to the technical field of hydrogenation catalysts, in particular to a catalyst suitable for hydrogenation and dehydrogenation of organic liquid-phase hydrogen storage materials and a preparation method thereof. Background technique [0002] With the development of industry and the improvement of people's material living standards, the demand for energy is also increasing day by day. Since the energy used in recent decades mainly comes from fossil fuels (such as coal, oil and natural gas, etc.), and its use inevitably pollutes the environment, and its reserves are limited, so it is urgent to find renewable green energy. Hydrogen is a clean and efficient energy, and it is regarded as the clean energy with the most development potential. Its storage and transportation are the key issues affecting the large-scale application of hydrogen energy. The commonly used hydrogen storage methods include high-pressure gaseous hydrogen storage,...

AI Technical Summary

Problems solved by technology

The commonly used hydrogen storage methods include high-pressure gaseous hydrogen storage, liquefied hydrogen storage, metal alloy hydrogen storage and organic liquid hydride hydrogen storage, etc. However, as a new type of organic liquid phase hydrogen storage material, it has high energy density and good safety, and is considered It is the most promising hydrogen storage method and has broad market application prospects, but this material still has many shortcomings that are not easy to overcome

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