Rapid scan FTIR reveals propane (am)oxidation mechanisms over Vanadium based catalysts

M. Olga  Guerrero-Pérez; Alan McCue; James A. Anderson

doi:10.1016/j.jcat.2020.07.031

Rapid scan FTIR reveals propane (am)oxidation mechanisms over Vanadium based catalysts

M. Olga Guerrero-Pérez^* (Corresponding Author), Alan McCue, James A. Anderson

^*Corresponding author for this work

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

9 Citations (Scopus)

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Abstract

Rapid scan FTIR coupled with Mass Spectrometry (MS) has been used to determine the role of spectroscopically observed species in the reaction media during propane dehydrogenation over a V/Al catalyst, and propane ammoxidation on a Sb-V-O sample. During the propane dehydrogenation reaction, it was shown that oxygenates are not formed during the first minutes and propylene is formed directly from propane via dehydrogenation on a V-O site. Oxygenates may form though secondary reactions due to further propylene oxidation. Propane dehydrogenation is the first step during the propane
ammoxidation reaction. This is followed by the transformation of propylene into acrylonitrile, which is the rate limiting step. Rapid scan FTIR/MS is shown to be a useful technique for monitoring chemical reactions in order to identify or eliminate observed surface species as potential reaction intermediates.
Understanding of the reaction mechanism is necessary in order to improve the chemical process design and the catalytic material.

Original language	English
Pages (from-to)	72-80
Number of pages	9
Journal	Journal of Catalysis
Volume	390
Early online date	6 Aug 2020
DOIs	https://doi.org/10.1016/j.jcat.2020.07.031
Publication status	Published - Oct 2020

Bibliographical note

Acknowledgements:
MOGP acknowledges PRX17/00054 grant from Spanish Ministry of Education for performing a research stay at the University of Aberdeen.

Keywords

Rapid-Scan Operando IR
Sb-V-O
propane
ammoxidation
partial oxidation
GLYCEROL
ACRYLONITRILE
CONVERSION
ACTIVE-SITES
REACTIVITY
Ammoxidation
Partial oxidation
OXIDE CATALYSTS
V-O CATALYSTS
KINETICS
OXIDATIVE DEHYDROGENATION
AMMOXIDATION
Propane

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title = "Rapid scan FTIR reveals propane (am)oxidation mechanisms over Vanadium based catalysts",

abstract = "Rapid scan FTIR coupled with Mass Spectrometry (MS) has been used to determine the role of spectroscopically observed species in the reaction media during propane dehydrogenation over a V/Al catalyst, and propane ammoxidation on a Sb-V-O sample. During the propane dehydrogenation reaction, it was shown that oxygenates are not formed during the first minutes and propylene is formed directly from propane via dehydrogenation on a V-O site. Oxygenates may form though secondary reactions due to further propylene oxidation. Propane dehydrogenation is the first step during the propaneammoxidation reaction. This is followed by the transformation of propylene into acrylonitrile, which is the rate limiting step. Rapid scan FTIR/MS is shown to be a useful technique for monitoring chemical reactions in order to identify or eliminate observed surface species as potential reaction intermediates.Understanding of the reaction mechanism is necessary in order to improve the chemical process design and the catalytic material.",

keywords = "Rapid-Scan Operando IR, Sb-V-O, propane, ammoxidation, partial oxidation, GLYCEROL, ACRYLONITRILE, CONVERSION, ACTIVE-SITES, REACTIVITY, Ammoxidation, Partial oxidation, OXIDE CATALYSTS, V-O CATALYSTS, KINETICS, OXIDATIVE DEHYDROGENATION, AMMOXIDATION, Propane",

author = "Guerrero-P{\'e}rez, {M. Olga} and Alan McCue and Anderson, {James A.}",

note = "Acknowledgements: MOGP acknowledges PRX17/00054 grant from Spanish Ministry of Education for performing a research stay at the University of Aberdeen.",

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doi = "10.1016/j.jcat.2020.07.031",

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AU - Guerrero-Pérez, M. Olga

AU - McCue, Alan

AU - Anderson, James A.

N1 - Acknowledgements: MOGP acknowledges PRX17/00054 grant from Spanish Ministry of Education for performing a research stay at the University of Aberdeen.

PY - 2020/10

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N2 - Rapid scan FTIR coupled with Mass Spectrometry (MS) has been used to determine the role of spectroscopically observed species in the reaction media during propane dehydrogenation over a V/Al catalyst, and propane ammoxidation on a Sb-V-O sample. During the propane dehydrogenation reaction, it was shown that oxygenates are not formed during the first minutes and propylene is formed directly from propane via dehydrogenation on a V-O site. Oxygenates may form though secondary reactions due to further propylene oxidation. Propane dehydrogenation is the first step during the propaneammoxidation reaction. This is followed by the transformation of propylene into acrylonitrile, which is the rate limiting step. Rapid scan FTIR/MS is shown to be a useful technique for monitoring chemical reactions in order to identify or eliminate observed surface species as potential reaction intermediates.Understanding of the reaction mechanism is necessary in order to improve the chemical process design and the catalytic material.

AB - Rapid scan FTIR coupled with Mass Spectrometry (MS) has been used to determine the role of spectroscopically observed species in the reaction media during propane dehydrogenation over a V/Al catalyst, and propane ammoxidation on a Sb-V-O sample. During the propane dehydrogenation reaction, it was shown that oxygenates are not formed during the first minutes and propylene is formed directly from propane via dehydrogenation on a V-O site. Oxygenates may form though secondary reactions due to further propylene oxidation. Propane dehydrogenation is the first step during the propaneammoxidation reaction. This is followed by the transformation of propylene into acrylonitrile, which is the rate limiting step. Rapid scan FTIR/MS is shown to be a useful technique for monitoring chemical reactions in order to identify or eliminate observed surface species as potential reaction intermediates.Understanding of the reaction mechanism is necessary in order to improve the chemical process design and the catalytic material.

KW - Rapid-Scan Operando IR

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KW - ammoxidation

KW - partial oxidation

KW - GLYCEROL

KW - ACRYLONITRILE

KW - CONVERSION

KW - ACTIVE-SITES

KW - REACTIVITY

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KW - Partial oxidation

KW - OXIDE CATALYSTS

KW - V-O CATALYSTS

KW - KINETICS

KW - OXIDATIVE DEHYDROGENATION

KW - AMMOXIDATION

KW - Propane

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U2 - 10.1016/j.jcat.2020.07.031

DO - 10.1016/j.jcat.2020.07.031

M3 - Article

SN - 0021-9517

VL - 390

SP - 72

EP - 80

JO - Journal of Catalysis

JF - Journal of Catalysis

ER -

Rapid scan FTIR reveals propane (am)oxidation mechanisms over Vanadium based catalysts

Abstract

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Keywords

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