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Orientador(es)
Resumo(s)
Toluene hydrogenation was studied over model catalysts with a fixed hydrogenating function (Pt/Al2O3) mechanically mixed with either HUSY or HBEA zeolites. Such mechanical mixtures showed improved platinum turnover frequencies compared to single Pt/Al2O3. Comparing to Pt-impregnated zeolite catalysts, the mechanical mixtures have lower activities per site showing that the contribution of acid sites decreases (and so the hydrogenating activity) with increased distance between Pt clusters and acid sites. Therefore, toluene hydrogenation can be used as a powerful tool to evaluate Pt-acid site intimacy in bifunctional catalysts.
Descrição
Palavras-chave
Platinum Zeolite Bifunctional catalyst Nanoscale intimacy Toluene hydrogenation
Contexto Educativo
Citação
MENDES, Pedro S. F.; [et al] – Elucidation of the zeolite role on the hydrogenating activity of Pt-catalysts. Catalysis Communications. ISSN 1566-7367. Vol. 89 (2017), pp. 152-155
Editora
Elsevier