A magnesium-based composite hydrogen production material based on in-situ preparation of bi-mo-cnts and its preparation method and application

Abstract

The invention discloses a Bi-Mo-CNTs magnesium-based composite hydrogen production material, which consists of Mg powder and Bi 2 MoO 6 / CNTs mixed ball milling, the Bi 2 MoO 6 Bi / CNTs prepared by soluble Bi salt and soluble Mo salt hydrothermal method 2 MoO 6 The loading was prepared on CNTs; Bi 2 MoO 6 The microscopic morphology of / CNTs is micron-scale microspheres, and the microspheres are composed of flocs loaded with nanoscale crystals. Among them, Bi 2 MoO 6 / CNTs are microspheres with a size of 10‑30 μm, Bi 2 MoO 6 Nanoscale crystals with a size of 100‑200 nm. Its preparation method comprises the following steps: 1) Bi 2 MoO 6 / Preparation of CNTs; 2) Preparation of Bi‑Mo‑CNTs magnesium-based composite hydrogen production materials. As a hydrolysis hydrogen production material, the hydrogen production of Bi-Mo-CNTs magnesium-based composite hydrogen production material reacted with 3.5% NaCl solution was 826.7-860.9 mLg ‑1 , the hydrogen production rate can reach 95.3‑99.2%, and the apparent activation energy is 23‑24 KJ·mol ‑1 .

Description

technical field [0001] The invention belongs to the field of energy technology, in particular to a magnesium-based composite hydrogen production material based on in-situ preparation of Bi-Mo-CNTs and its preparation method and application. Background technique [0002] Among many energy sources, hydrogen energy, as an ideal secondary energy carrier, has received extensive attention and research due to its advantages of environmental friendliness, wide range of sources, and high energy density. The preparation and storage of hydrogen energy has always been the focus of hydrogen energy research. The use of magnesium water reaction to prepare hydrogen is an efficient and clean hydrogen preparation method. The theoretical hydrogen production capacity of magnesium-based hydrogen production materials is very high, the reserves are abundant and easy to obtain, the reaction conditions are mild and the products are non-polluting, which makes it have long-term applications. prospect....

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Problems solved by technology

After follow-up research, it was found that this technology still has the following technical problems: the maximum hydrogen production rate of the prepared magnesium-based powder composite hydrogen production material is 756 mL·g-1min-1 after exposure to air for 21 days, the maximum hydrogen production rate was 210mL·g-1min-1 , both hydrogen production rates are slow

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