The influence of over-stoichiometry in La2Ni0.9V0.1O4.15+δ on selective oxidative dehydrogenation of propane

S.D. Crapanzano; Igor V. Babych; Leonardus Lefferts

doi:10.1016/j.cattod.2012.04.041

The influence of over-stoichiometry in La2Ni0.9V0.1O4.15+δ on selective oxidative dehydrogenation of propane

S.D. Crapanzano, Igor V. Babych, Leonardus Lefferts

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

In this study, the non-stoichiometric redox compound La2Ni0.9V0.1O4.15+δ has been tested as an oxidant in selective oxidation of propane. The extent of over-stoichiometry (δ) was varied via both removing oxygen with propane in pulse experiments, as well as partial re-oxidation with oxygen. The optimal degree of over-stoichiometry (δ) has been quantified; olefins are formed whereas formation of CO2 is prevented provided that δ is below 0.03. Additionally, the structural stability of the material was tested with in situ X-ray diffraction in H2 (H2-XRD), temperature programmed reduction (TPR), thermo-gravimetric analysis (TGA), propane-pulse-experiments and re-oxidation cycles. La2Ni0.9V0.1O4.15+δ has demonstrated structure stability at 550 °C and reversibility during oxidation–reduction cycles at 800 °C. Therefore, La2Ni0.9V0.1O4.15+δ is considered suitable for selective oxidative dehydrogenation of propane, provided that the degree of over-stoichiometry is limited to 0.03.

Original language	English
Pages (from-to)	17-23
Number of pages	7
Journal	Catalysis today
Volume	203
DOIs	https://doi.org/10.1016/j.cattod.2012.04.041
Publication status	Published - 1 Jun 2013

Keywords

IR-84520
METIS-294853

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10.1016/j.cattod.2012.04.041

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@article{059c1899f52249abb6b6fbb4793efcaa,

title = "The influence of over-stoichiometry in La2Ni0.9V0.1O4.15+δ on selective oxidative dehydrogenation of propane",

abstract = "In this study, the non-stoichiometric redox compound La2Ni0.9V0.1O4.15+δ has been tested as an oxidant in selective oxidation of propane. The extent of over-stoichiometry (δ) was varied via both removing oxygen with propane in pulse experiments, as well as partial re-oxidation with oxygen. The optimal degree of over-stoichiometry (δ) has been quantified; olefins are formed whereas formation of CO2 is prevented provided that δ is below 0.03. Additionally, the structural stability of the material was tested with in situ X-ray diffraction in H2 (H2-XRD), temperature programmed reduction (TPR), thermo-gravimetric analysis (TGA), propane-pulse-experiments and re-oxidation cycles. La2Ni0.9V0.1O4.15+δ has demonstrated structure stability at 550 °C and reversibility during oxidation–reduction cycles at 800 °C. Therefore, La2Ni0.9V0.1O4.15+δ is considered suitable for selective oxidative dehydrogenation of propane, provided that the degree of over-stoichiometry is limited to 0.03.",

keywords = "IR-84520, METIS-294853",

author = "S.D. Crapanzano and Babych, {Igor V.} and Leonardus Lefferts",

year = "2013",

month = jun,

day = "1",

doi = "10.1016/j.cattod.2012.04.041",

language = "English",

volume = "203",

pages = "17--23",

journal = "Catalysis today",

issn = "0920-5861",

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TY - JOUR

T1 - The influence of over-stoichiometry in La2Ni0.9V0.1O4.15+δ on selective oxidative dehydrogenation of propane

AU - Crapanzano, S.D.

AU - Babych, Igor V.

AU - Lefferts, Leonardus

PY - 2013/6/1

Y1 - 2013/6/1

N2 - In this study, the non-stoichiometric redox compound La2Ni0.9V0.1O4.15+δ has been tested as an oxidant in selective oxidation of propane. The extent of over-stoichiometry (δ) was varied via both removing oxygen with propane in pulse experiments, as well as partial re-oxidation with oxygen. The optimal degree of over-stoichiometry (δ) has been quantified; olefins are formed whereas formation of CO2 is prevented provided that δ is below 0.03. Additionally, the structural stability of the material was tested with in situ X-ray diffraction in H2 (H2-XRD), temperature programmed reduction (TPR), thermo-gravimetric analysis (TGA), propane-pulse-experiments and re-oxidation cycles. La2Ni0.9V0.1O4.15+δ has demonstrated structure stability at 550 °C and reversibility during oxidation–reduction cycles at 800 °C. Therefore, La2Ni0.9V0.1O4.15+δ is considered suitable for selective oxidative dehydrogenation of propane, provided that the degree of over-stoichiometry is limited to 0.03.

AB - In this study, the non-stoichiometric redox compound La2Ni0.9V0.1O4.15+δ has been tested as an oxidant in selective oxidation of propane. The extent of over-stoichiometry (δ) was varied via both removing oxygen with propane in pulse experiments, as well as partial re-oxidation with oxygen. The optimal degree of over-stoichiometry (δ) has been quantified; olefins are formed whereas formation of CO2 is prevented provided that δ is below 0.03. Additionally, the structural stability of the material was tested with in situ X-ray diffraction in H2 (H2-XRD), temperature programmed reduction (TPR), thermo-gravimetric analysis (TGA), propane-pulse-experiments and re-oxidation cycles. La2Ni0.9V0.1O4.15+δ has demonstrated structure stability at 550 °C and reversibility during oxidation–reduction cycles at 800 °C. Therefore, La2Ni0.9V0.1O4.15+δ is considered suitable for selective oxidative dehydrogenation of propane, provided that the degree of over-stoichiometry is limited to 0.03.

KW - IR-84520

KW - METIS-294853

U2 - 10.1016/j.cattod.2012.04.041

DO - 10.1016/j.cattod.2012.04.041

M3 - Article

VL - 203

SP - 17

EP - 23

JO - Catalysis today

JF - Catalysis today

SN - 0920-5861

ER -

The influence of over-stoichiometry in La2Ni0.9V0.1O4.15+δ on selective oxidative dehydrogenation of propane

Abstract

Keywords

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