Skeletal copper catalyst and preparation method thereof

Abstract

The invention relates to a skeletal copper catalyst and a preparation method thereof. According to the weight percentage, the raw material formulation of the skeletal copper catalyst comprises the following components of: 45-65% of metal copper, 30-50% of metal aluminium, 0.5-3% of at least one out of metal scandium and neodymium; and 1.5-2% of at least one out of cobalt, platinum, palladium, nickel, tungsten and molybdenum. The preparation method comprises the following steps of: mixing all components by the formulation proportion, and sequentially heating the mixture by section, mixing the mixture uniformly and then suddenly cooling the mixture, thus preparing an alloy block at the normal temperature; crushing and screening the alloy block to prepare the skeletal copper alloyed powder; and further activating the alloyed powder to obtain the skeletal copper catalyst. The skeletal copper catalyst has excellent catalytic performance, good stability and long service life and can be usedrepeatedly.

Description

A kind of framework copper catalyst and preparation method thereof technical field The invention relates to a skeleton copper catalyst and a preparation method thereof. Background technique Skeleton copper or Raney copper (RaneyCu) is a metal copper catalyst with a sponge-like pore structure. It is a copper-aluminum alloy powder before activation. It has stable physical and chemical properties in a normal environment and is volatile when exposed to air and water for a long time. Deactivation: The catalyst is red and black irregular particles after activation, which is highly reducing and very unstable, and will oxidize and spontaneously ignite in the air. Skeleton copper is a good catalyst in certain conversion processes such as dehydrogenation, oxidative dehalogenation, and desulfurization. It has the advantages of good catalytic activity, high mechanical strength, insensitivity to poisons, and good thermal conductivity. Insufficient waiting, resulting in higher cost of ...

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Problems solved by technology

At present, due to the limitation of the catalyst, the process has not yet achieved industrial production

The Chinese invention patent application with application number "200410014548.8" and titled "Preparation Process for Synthesizing Glyphosate by Dehydrogenation and Oxidation of Diethanolamine" discloses the use of sodium tungstate as a catalyst for the dehydrogenation reaction. The hydrogen reaction yield is only about 90%, the cost is high, and it is not suitable for industrial production