n-Hexane cracking over heteropoly acids, 3. Silica supported heteropoly acids期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

n-Hexane cracking over heteropoly acids, 3. Silica supported heteropoly acids

Authors:	Abdallah Oulmekki Fré dé ric Lefebvre

Affiliation:	(1) Institut de Recherches sur la Catalyse, 2 avenue Albert Einstein, 69626 Villeurbanne Cedex, France

Abstract:	Silica supported heteropoly acids are active in n-hexane cracking, while the pure compounds (except H₃PW₁₂O₄₀) are inactive. This result is explained by a partial transformation of H₆P₂W₁₈O₆₂ and H₆P₂W₂₁O₇₁ (H₂O)₃ into H₃PW₁₂O₄₀. In the case of H₄SiW₁₂O₄₀, the polyanion in interaction with silica leads to superacidic species upon thermal treatment. , , -, ( H₃PW₁₂O₄₀) . H₆P₂W₁₈O₆₂ H₆P₂W₂₁O₇₁ (H₂O)₃ H₃PW₁₂O₄₀. H₄SiW₁₂O₄₀ , , .

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