Preparation method of sulphonation phthalein cobalt catalyst using activated carbon as carrier

Abstract

The present invention discloses a preparation method of a sulfonated cobalt phthalocyanine catalyst which takes active carbon as a carrier. The preparation method comprises the treatment of the active carbon and the preparation of the aqueous solution or the alkaline solution of sulfonated cobalt phthalocyanine. The preparation method is characterized in that the temperature of the active carbon is controlled to be 300 DEG C to 500 DEG C; under the protection of inert gas, the active carbon is directly dipped in the aqueous solution or the alkaline solution dissolved with the sulfonated cobalt phthalocyanine; or the aqueous solution or the alkaline solution dissolved with the sulfonated cobalt phthalocyanine is directly sprayed and dipped at the high temperature active carbon with the protection of the inert gas; then the sulfonated cobalt phthalocyanine catalyst with high load is obtained after cooling treatment once more. The content of sulfonated cobalt phthalocyanine active component loaded by the present invention is high; cobalt loaded quantity can be more than 10 percent of the quality of active carbon framework; the time for dipping or spraying and dipping treatment is short and is just 1 to 60 seconds; catalyzing active component loaded at the active carbon does not falling off easily, and the preparation method can be combined with the traditional active carbon preparation technology to prepare a catalyst product at a time.

Description

Technical field: [0001] The invention relates to a method for directly loading the catalytic active components of sulfonated cobalt phthalocyanine on an activated carbon carrier to prepare a solid catalyst with high cobalt content, in particular to a sulfonated cobalt phthalocyanine catalyst with activated carbon as a carrier The preparation method of the product is mainly used for catalytic sweetening treatment of liquid petroleum gas, gasoline, naphtha, diesel oil and other oil products, so that the oil products can achieve the purpose of deodorization, desulfurization and increasing stability. Background technique: [0002] With the increasing shortage of crude oil resources and increasing mining depth, the mining and processing of high-sulfur crude oil is increasing. According to preliminary statistics, it has occupied more than 60% of the market, and the annual average ratio of The increase of high-sulfur crude oil not only increases the difficulty of oil processing, bu...

AI Technical Summary

Problems solved by technology

However, the sulfonated cobalt phthalocyanine catalysts prepared by these two types of preparation methods all have the problem of low cobalt loading.

The main reason is that most of the current activated carbon products have a microporous structure, and the surface area of ​​the micropores with a pore diameter less than 2nm generally accounts for more than 80% of the total surface area; while the diameter of the sulfonated cobalt phthalocyanine ion is relatively large, even if it is maintained for a long time time, it is also difficult to adsorb on the inner surface through the micropores of activated carbon, and the adsorption only occurs on the outer surface and mesopores of activated carbon, so that the absolute majority of the inner pore surface is not fully utilized, and the cobalt saturation adsorption is low, so that The cobalt loading of the final catalyst is relatively low