Preparation method of sodium borohydride alcoholysis hydrogen production catalyst

Abstract

The invention relates to a preparation method of a sodium borohydride alcoholysis hydrogen production catalyst, which belongs to the technical field of preparation of supported catalysts and comprises the following steps: (1) pretreatment of foamed nickel; (2) electroless plating; (3) electroplating; ( 4) Preparation of sodium borohydride alcoholysis hydrogen production catalyst. The invention adopts the combined method of electroless plating and electroplating to prepare foamed nickel-supported ruthenium-nickel alloy catalyst, which greatly increases the specific surface area of ​​the catalyst, increases the active sites of the catalyst, and further enhances the hydrogen production performance of the catalyst. The prepared foamed nickel-supported ruthenium-nickel metal catalyst is easy to separate during the reaction process and can produce hydrogen under control, which is very in line with the safety and convenience requirements of fuel cell vehicles, and can be widely used in chemical hydrogen production technology to promote the further development of hydrogen energy economy.

Description

technical field [0001] The present invention relates to a preparation method of a catalyst for hydrogen production by alcoholysis of sodium borohydride, in particular to a method for preparation of a foamed nickel-supported ruthenium-nickel alloy catalyst for alcoholysis of sodium borohydride, especially the combination of electroless plating and electroplating to prepare sponge-like hollows The invention relates to a structure supported foam nickel supported ruthenium-nickel alloy catalyst (Ru-Ni / Ni foam), which belongs to the technical field of catalysts. [0002] technical background [0003] The search for sustainable energy has become a top priority, and hydrogen energy, as a safe, environmentally friendly, efficient and clean energy, has been used in all aspects of industry. [0004] At present, the application of hydrogen energy in the automotive industry has become the focus, especially for proton exchange membrane fuel cells (PEMFC). One of the factors limiting the ...

AI Technical Summary

Problems solved by technology

[0007] The study found that the noble metal ruthenium Ru has significantly higher catalytic activity than other noble metals in the hydrogen production reaction of sodium borohydride, but the high price of ruthenium Ru metal limits its industrial production

[0008] In order to reduce the cost of the catalyst, the noble metal ruthenium catalysts are doped with non-noble metals to form alloyed or core-shell nanoparticle catalysts. These non-noble metals and noble metal ruthenium interact with each other. The common non-noble metals Co, Ni, Fe , The electrons on the Mo atom can be transferred to the unfilled d orbital of the ruthenium Ru atom, so that the metal ruthenium presents an electron-rich state, and the electron-rich metal active site provides electrons to make it easier for the borohydride on the surface of the active site to adsorb Combining free hydrogen with methanol to generate hydrogen is an important reason why the doping of non-noble metals can not only reduce the amount of noble metals used but also improve the catalytic activity of pure noble metals, but at present, most of these alloy catalysts are powder-type, It is difficult to produce hydrogen in an instant and controllable manner in the actual hydrogen production test

Images