SOLID SULFONATED SUBSTANCE, ITS PRODUCTION METHOD AND ION EXCHANGER, ELECTROLYTIC MEMBRANE, CATALYST, MEMBRANE ELECTRODE-JOINED ARTICLE, FUEL CELL WHICH USE THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an inexpensive solid sulfonated substance which is high in proton conductivity, excellent in heat resistance, and excellent in ion exchange capacity, catalyst performance and OH radical resistance, to provide a method for easily producing the solid sulfonated substance at low cost, and to provide a proton conducting membrane, a catalyst, an ion exchange, a membrane electrode-jointed article, and a fuel cell which use the solid sulfonated substance.

SOLUTION: The solid sulfonated substance is prepared by adding a sulfonating agent to an aromatic hydrocarbon compound having an alkyl group-having aromatic ring and then heating the resultant mixture, and is characterized by having an alkyl group and having a sulfonic group introduced thereinto.

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