Solid acid catalyst, method for preparing same and reaction using same

Abstract

A method for producting a solid acid catalyst is provided which produces a shaped material of a solid acid catalyst containing a sulfureous component but have a high activity and having a practically sufficient handleability and mechanical strength involves the steps of (a) fabricating a support containing a portion of zirconia and / or hydrated zirconia and a portion of alumina and / or hydrated alumina and having a peak diameter in the range of 0.05 to 1 mum in a pore diameter distribution of 0.05 to 10 mum; and having a sulfuerous component supported on the support or (b) fabricating a support containing a portion of zirconia and / or hydrated zirconia and a portion of alumina and / or hydrated alumina and including pores having a pore diameter of not less than 0.05 mum and not more than 1 mum occupying a pore volume of 0.05 to 0.5 ml / g and pores having a pore diameter of about 1 mum and not more than 10 mum occupying a pore volume of below 0.05 ml / g; and having a sulfuerous component supported on the support.

Description

technical field [0001] The invention relates to a solid acid catalyst with high activity and easy handling ability in an acid-catalyzed reaction system and a production method thereof. Background technique [0002] In the chemical industry, there are known acid-catalyzed reactions such as alkylation, esterification, and isomerization. Acid catalysts such as sulfuric acid, aluminum chloride, hydrogen fluoride, phosphoric acid and p-toluenesulfonic acid have hitherto been used in these reactions. However, these acid catalysts are corrosive to metals, so that the production equipment needs to use expensive anti-corrosion materials or anti-corrosion treatment for the production equipment. Usually, not only is it difficult to separate the catalyst from the reactants after the reaction, but also waste acid treatment is necessary, and complicated processes such as alkali washing are also unavoidable. Also, there are many problems from environmental considerations. Furthermore, t...

AI Technical Summary

Problems solved by technology

However, even if the catalyst has sufficient catalytic activity in powder form, its molding cannot obtain the mechanical strength required for reaction / production or its catalytic activity will decrease with its molding

Therefore, a production method of a shaped solid acid catalyst that satisfies the characteristics required as a catalyst and has the required mechanical strength has not been reported yet.