Síntesis química, estudios de caracterización y reactividad de un material catalítico a base de ZrO2-H3PW12O40

AUTOR(ES)

Hernández Enríquez, Juan Manuel, García Alamilla, Ricardo, Páramo García, Ulises, Rodrigo, Rebeca Silva, García Serrano, Luz Arcelia

FONTE

Quím. Nova

DATA DE PUBLICAÇÃO

2013

RESUMO

In this work, the preparation and characterization of materials such as zirconium oxide (ZrO2) and phosphotungstic acid promoted zirconium oxide (ZrO2-H3PW12O40) is presented. Physico-chemical characterization results showed that addition of H3PW12O40 acted as both a textural and chemical promoter of zirconium oxide. The incorporation of phosphotungstic acid into the ZrO2 matrix delayed the sintering of the material and stabilized ZrO2 in the tetragonal phase. ZrO2 acidity was also enhanced, developing strong acid sites on its surface. The Pt/ZrO2-H3PW12O40 catalyst was active for n-pentane isomerization at 250 °C, exhibiting high selectivity to iso-pentane (95%). This result is probably due to its suitable acidity.

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