SOLID ACID CATALYST HAVING NANOTUBE STRUCTURE

摘要

Disclosed is a novel solid acid catalyst having a higher catalytic activity than those of conventional solid acid catalysts.  The solid acid catalyst is developed based on a finding that a tube-like titanium oxide substance produced by adding a titanium oxide powder to a concentrated aqueous alkaline solution and heating the resulting mixture under hydrothermal conditions has an excellent acid catalytic activity.  The solid acid catalyst comprises a tube-like substance produced by thermally treating at least one compound selected from a group consisting of an oxide of a metal, a chloride of a metal, a sulfate of a metal and an organometallic compound in a concentrated aqueous alkaline solution.