Solid acid and manufacturing method of the same



PROBLEM TO BE SOLVED: To provide a manufacturing method of a solid acid which is safe and uses no special equipment and a solid acid which has high ion exchange capacity, catalytic capability and proton conductivity and excellent heat resistance, and to provide a proton conductive film, solid acid catalyst, ion exchange membrane, membrane-electrode assembly or fuel cell using it. SOLUTION: The manufacturing method of the solid acid comprises heat-treating an aromatic compound under ordinary pressure in the presence of a polycondensation inducing agent and making the obtained polycondensation product into a sulfonic acid with a sulfonic acid forming agent, and in the method the heat treatment temperature is 50-220°C. COPYRIGHT: (C)2007,JPO&INPIT
【課題】 安全で、特殊な装置を使用しない、イオン交換容量、触媒性能、プロトン伝導性が高く耐熱性に優れた固体酸の製造方法および固体酸の提供、およびこれを使用したプロトン伝導膜、固体酸触媒、イオン交換膜、膜電極接合体、燃料電池の提供。 【解決手段】 芳香族化合物を、常圧下で重縮合化剤の存在下で加熱処理し、得られた重縮合化合物を、スルホン酸化剤でスルホン酸化することを特徴とする固体酸の製造方法。 加熱処理温度が、50〜220℃である上記固体酸の製造方法。 【選択図】 なし




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