Method for preparing core-shell type cerium-gold catalyst by reversed-phase microemulsion process and application of catalyst

Abstract

The invention relates to the technical field of industrial catalysts, in particular to a method for preparing a core-shell type cerium-gold catalyst through a reversed-phase microemulsion process andapplication of the catalyst. The preparation method comprises the following steps of: preparing a cerium-gold precursor, then loading the cerium-gold precursor on a carrier, and then performing roasting to obtain the core-shell type cerium-gold catalyst. According to the invention, ionic liquid is used as a surfactant, and the core-shell type cerium-gold catalyst is prepared by a reversed-phase microemulsion process. Strong acid and other substances polluting the environment are not used, operation is easy, reaction conditions are mild, the loaded ionic liquid can be used for preparing variouscore-shell type cerium-gold catalysts with different pore diameters, and the core-shell type cerium gold catalysts have high catalytic activity and long service life when applied to alcohol aldehydeoxidative esterification reaction.

Description

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AI Technical Summary

Benefits of technology

This patented technology uses an improved way for creating small metal shell structures called cathode-supported or lithographic types made up from tiny metallic powders suspended within solvents like alcohols. These smaller particle cores help stabilizing the emulsified mixture while forming larger ones without adding any chemical agents harmful to their surroundings. By reversely mixing these mixtures together at room temperatures, they become evenly distributed throughout them due to the presence of specific molecules attached to each part of the microspheral crystal network. When this material becomes active under acidic conditions, it forms nano scale particles that prevent downstream reactions and improve its effectiveness over existing methods. Additionally, if certain materials were added into the solution containing silver salt, then other elements could attach themselves onto those surfaces instead of being absorbed into them. Overall, this new technique provides better stability, efficiency, and durability than current techniques currently available.

Problems solved by technology

Technologies described in this patented text involve developing new ways to produce small molecules called benzonil acid compounds from formalarenol through various steps like decomposition into smaller ones before being reacted chemically. These techniques include butter oil baking, heat treatment, and other technical means. Additionally, there may exist different types of catalyst systems based on these principles.

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