Preparation process of novel catalyst for isobutylbenzene synthesis process

The invention belongs to the field of pharmaceutical chemicals, and particularly relates to a preparation process of a novel catalyst for an isobutylbenzene synthesis process. Isobutylbenzene (IBB) is a main intermediate for synthesizing a human medicine ibuprofen which is used for diminishing inflammation, relieving fever and easing pain. A main synthesis method of the isobutylbenzene is an alkylation method taking methylbenzene and propylene as raw materials, and isobutylbenzene is generated through a side chain alkylation reaction in the presence of a basic catalyst. Alkali metal needs to be used as a catalyst for the side chain alkylation reaction, at present, metal potassium catalysts or potassium-sodium alloy catalysts are usually used at home and abroad, and the production cost is greatly reduced and the economic benefit is improved by using cheaper metal sodium.The present invention uses metallic sodium and potassium carbonate to make the novel catalyst, and the catalyst is used for synthetic reaction