Hydrogen storage alloy type hydrogenation catalyst and preparation method thereof

Abstract

The invention provides a hydrogen storage alloy type hydrogenation catalyst and a preparation method thereof. The hydrogen storage alloy type hydrogenation catalyst product is MlNi<3.7>Co<0.6>Mn<0.3>Al<0.4> (M is mixed rare earth). The method comprises the processes of prefabrication and activation of the hydrogen storage alloy type hydrogenation catalyst, wherein the prefabrication process is to smelt alloy raw materials for designing the counterweight of compositions under the protection of argon gas atmosphere, and to perform heat treatment, quenching and milling on the alloy raw materials; and the activation process is to add an alkaline solution of potassium borohydride or sodium borohydride into prefabricated hydrogen storage alloy type hydrogenation catalyst powder, to heat the mixture to obtain a treatment liquid, to add solid potassium borohydride or solid sodium borohydride into the treatment liquid, and to perform temperature rise, filtration and drying to obtain the activated hydrogen storage alloy type hydrogenation catalyst product. The yield of a reaction product obtained from the hydrogen storage alloy type hydrogenation catalyst during hydrogenation reaction at a temperature of 200 DEG C is improved from 2.6 percent to 65.6 percent.

Description

technical field [0001] The invention relates to a hydrogenation catalyst and a preparation method thereof, in particular to a hydrogen storage alloy type hydrogenation catalyst and a preparation method thereof. Background technique [0002] Hydrogen storage alloy is a new type of green functional material that has attracted more and more attention since the 1970s. It has hydrogen absorption and desorption properties under certain conditions. It is characterized by large hydrogen storage capacity, no pollution, safety, reliability, and reusability. Wait. Hydrogen storage alloys are commonly used in energy conversion technologies, and their physical and chemical properties have been extensively and intensively studied in this regard. Hydrogen molecules are easily dissociated and absorbed on the surface of hydrogen storage alloys, and form highly active metal hydrides with metals, which can release hydrogen under certain conditions. This special property makes hydrogen storag...

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Problems solved by technology

However, the treatment method is complicated, the activity of catalytic hydrogenation is not improved much, and the discharge of wastewater is large, which is not conducive to environmental protection.

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