Supported ionic liquid bimetallic catalyst based on yttrium and preparation method thereof

Abstract

The invention discloses a yttrium-based supported ionic liquid bimetallic catalyst and a preparation method thereof. The catalyst comprises a catalyst carrier, and a metal palladium compound, a metal yttrium compound and an ionic liquid which are supported on the catalyst carrier. By adding the assistant metal Y, on one hand, the geometric structure and the electronic effect of the active components of the catalyst can be improved, and on the other hand, competitive adsorption on the surface of the carrier is increased, the number of isolated Pd atoms is increased, and the dispersity of the active components is improved.

Description

Technical field [0001] The present invention relates to the field of catalysts, and more particularly to a cerium-based load type ionic liquid bis metal catalyst and a preparation method thereof. Background technique [0002] The load type ionic liquid is a composite material that binds to the ionic liquid with the solid carrier material by physical or chemical method, and the existing catalyst is low, the active component dispersibility is poor, and the carrier The interaction force between the active components is weak, resulting in the loss of the active group, and the pre-synthetic ionic liquid single metal catalyst exhibits good hydrogenation performance, but for the production of high concentrations 2 O 2 (50% or more) production processes, the hydrogenation efficiency remains to be further improved. Further, although the addition of the ionic liquid, although at a certain extent, the hydrogenation efficiency and selectivity of the catalyst can be improved, but the structur...

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Problems solved by technology

[0002] Supported ionic liquids are composite materials that combine ionic liquids with solid-supported materials by physical or chemical methods. For the hydrogenation reaction of anthraquinone, the existing catalysts have low hydrogenation efficiency, poor dispersion of active components, and the The weak interaction between the active components leads to problems such as the easy loss of the active components. Although the ionic liquid single metal catalyst synthesized in the previous stage shows good hydrogenation performance, it is not suitable for the production of high-concentration H 2 o 2 (more than 50%) production process, the hydrogenation efficiency still needs to be further improved

In addition, although the addition of ionic liquids can improve the hydrogenation efficiency and selectivity of the catalyst to a certain extent, the structural characteristics of the ionic liquid on the surface of the catalyst and the local structure changes before and after loading active metals still need to be further explored.