Effect of Potassium Modification of Structure and Reactivity of V2O5/gamma-Al2O3 for Isobutane Dehydrogenation to Isobutene

• Autorzy: Ma H. , Wang Z. -L. , Zhu W. -C. , Jing S. -B. , Ji D. -H. , Wang G.-J.
• Języki publikacji: EN

Abstrakty

EN

Undoped and K-doped V2O5/ -Al2O3 catalysts for the dehydrogenation of isobutane to isobutene were prepared by impregnation and characterized by means of BET, H2-TPR, NH3-TPD, XPS and ESR. It is found that potassium addition changes acidic and electric properties of V2O5/ -Al2O3 and results in a better spreading of V2O5 over -Al2O3 surface. Small addition of potassium toV2O5/ -Al2O3 catalyst (K:V = 0.05), consisting of 12 wt% V2O5, increased the activity and selectivity in dehydrogenation of isobutane to isobutene.

Słowa kluczowe

EN

K-doped V2O5/gamma-Al2O3; surface structures; dehydrogenation; isobutane

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2002
• Tom: Vol. 76 / nr 12
• Strony: 1733--1738
• Opis fizyczny: Bibliogr. 25 poz., rys.

Twórcy

autor

Ma H.

• Jilin University, Department of Chemistry, Changchun 130023, China

autor

Wang Z. -L.

• Jilin University, Department of Chemistry, Changchun 130023, China

autor

Zhu W. -C.

• Jilin University, Department of Chemistry, Changchun 130023, China

autor

Jing S. -B.

• Jilin University, Department of Chemistry, Changchun 130023, China

autor

Ji D. -H.

• Jilin University, Department of Chemistry, Changchun 130023, China

autor

Wang G.-J.

• Jilin University, Department of Chemistry, Changchun 130023, China

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