| 摘要 |
PROBLEM TO BE SOLVED: To provide a granular solid acid capable of maintaining granular shape thereof in a production process independently of a binder, capable of retaining a catalytic activity, and having high design freedom for a granule diameter, and a method for producing the same.SOLUTION: A method for producing a granular solid acid comprises: molding regenerated cellulose derived from viscose to a granular shape to obtain a granular cellulose raw material, as a raw material preparation step; calcining the granular cellulose raw material at 290°C-420°C under an inert atmosphere to obtain a granular carbonized material having granule diameter of 0.075 mm or more, as a carbonization step; and introducing sulfo groups into the granular carbonized material in oleum, as a sulfonation step. The sulfo group content in the granular solid acid is 0.7-2.7 mmol/g. The granular solid acid produced according to the method is also provided. |
