Active site of praseodymium orthovanadate catalyst in oxidative dehydrogenation of propane

Weide Zhang; Chaktong Au; Huilin Wan

doi:10.1007/BF02898915

Active site of praseodymium orthovanadate catalyst in oxidative dehydrogenation of propane

Weide Zhang^*, Chaktong Au, Huilin Wan

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

9 Citations (Scopus)

Abstract

The pure phase of praseodymium orthovanadate (PrVO₄) has been prepared by the citrate method. The active site of Pr-VO₄ was studied by ESR, NO-TPD, O₂-TPD and ¹⁸O₂-isotope exchange methods. The results of ESR and NO-TPD confirmed the presence of V⁴⁺ in the catalyst. ¹⁸O₂-isotope exchange was through a single exchange procedure. From the result of O₂ + TPD and the kinetic study of ¹⁸O₂-isotope exchange, one can reach a conclusion that the V⁴⁺ species associated with oxygen vacancies are the site for O₂ activation. The adsorbed O₂ or O^- are the active oxygen species in propane oxidative dehydrogenation.

Original language	English
Pages (from-to)	217-220
Number of pages	4
Journal	Chinese Science Bulletin
Volume	43
Issue number	3
DOIs	https://doi.org/10.1007/BF02898915
Publication status	Published - Feb 1998

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Active site
Catalyst
Praseodymium orthovanadate
Propane oxidative dehydrogenation

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10.1007/BF02898915

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title = "Active site of praseodymium orthovanadate catalyst in oxidative dehydrogenation of propane",

abstract = "The pure phase of praseodymium orthovanadate (PrVO4) has been prepared by the citrate method. The active site of Pr-VO4 was studied by ESR, NO-TPD, O2-TPD and 18O2-isotope exchange methods. The results of ESR and NO-TPD confirmed the presence of V4+ in the catalyst. 18O2-isotope exchange was through a single exchange procedure. From the result of O2 + TPD and the kinetic study of 18O2-isotope exchange, one can reach a conclusion that the V4+ species associated with oxygen vacancies are the site for O2 activation. The adsorbed O2 or O- are the active oxygen species in propane oxidative dehydrogenation.",

keywords = "Active site, Catalyst, Praseodymium orthovanadate, Propane oxidative dehydrogenation",

author = "Weide Zhang and Chaktong Au and Huilin Wan",

note = "Funding Information: Acknowledgement This work was supported by the Hong Kong Research Grants Council, UGC (HKBC, 102/93E)",

year = "1998",

month = feb,

doi = "10.1007/BF02898915",

language = "English",

volume = "43",

pages = "217--220",

journal = "Chinese Science Bulletin",

issn = "1001-6538",

publisher = "Elsevier BV",

number = "3",

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TY - JOUR

T1 - Active site of praseodymium orthovanadate catalyst in oxidative dehydrogenation of propane

AU - Zhang, Weide

AU - Au, Chaktong

AU - Wan, Huilin

N1 - Funding Information: Acknowledgement This work was supported by the Hong Kong Research Grants Council, UGC (HKBC, 102/93E)

PY - 1998/2

Y1 - 1998/2

N2 - The pure phase of praseodymium orthovanadate (PrVO4) has been prepared by the citrate method. The active site of Pr-VO4 was studied by ESR, NO-TPD, O2-TPD and 18O2-isotope exchange methods. The results of ESR and NO-TPD confirmed the presence of V4+ in the catalyst. 18O2-isotope exchange was through a single exchange procedure. From the result of O2 + TPD and the kinetic study of 18O2-isotope exchange, one can reach a conclusion that the V4+ species associated with oxygen vacancies are the site for O2 activation. The adsorbed O2 or O- are the active oxygen species in propane oxidative dehydrogenation.

AB - The pure phase of praseodymium orthovanadate (PrVO4) has been prepared by the citrate method. The active site of Pr-VO4 was studied by ESR, NO-TPD, O2-TPD and 18O2-isotope exchange methods. The results of ESR and NO-TPD confirmed the presence of V4+ in the catalyst. 18O2-isotope exchange was through a single exchange procedure. From the result of O2 + TPD and the kinetic study of 18O2-isotope exchange, one can reach a conclusion that the V4+ species associated with oxygen vacancies are the site for O2 activation. The adsorbed O2 or O- are the active oxygen species in propane oxidative dehydrogenation.

KW - Active site

KW - Catalyst

KW - Praseodymium orthovanadate

KW - Propane oxidative dehydrogenation

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U2 - 10.1007/BF02898915

DO - 10.1007/BF02898915

M3 - Journal article

AN - SCOPUS:0542418226

SN - 1001-6538

VL - 43

SP - 217

EP - 220

JO - Chinese Science Bulletin

JF - Chinese Science Bulletin

IS - 3

ER -

Active site of praseodymium orthovanadate catalyst in oxidative dehydrogenation of propane

Abstract

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