Mechanism of the reaction of nitric oxide, ammonia, and oxygen over vanadia catalysts. 1. The role of oxygen studied by way of isotopic transients under dilute conditions

Frans J.J.G. Janssen; Frans M.G. Van Den Kerkhof; Hans Bosch; Julian R.H. Ross

doi:10.1021/j100307a021

Mechanism of the reaction of nitric oxide, ammonia, and oxygen over vanadia catalysts. 1. The role of oxygen studied by way of isotopic transients under dilute conditions

Frans J.J.G. Janssen, Frans M.G. Van Den Kerkhof, Hans Bosch, Julian R.H. Ross

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

Abstract

The mechanism of the selective reduction of nitric oxide with ammonia in the presence of labeled oxygen has been investigated over a series of catalysts consisting of unsupported V₂O₅, V₂O₅ on TiO₂, V₂O₅ on SiO₂/Al₂O₃, and V₂O₅ on Al₂O₃. The results confirm that lattice oxygen participates in the reaction. It is shown that this participation can be explained in terms of a reduction/oxidation mechanism. Water, produced as a result of the reaction involving NO, NH₃, and O₂, is formed at two sites; the first part comes from the reaction of gaseous nitric oxide and adsorbed ammonia via an Eley-Rideal mechanism and the other comes from a surface dehydration process. The experimental findings are explained by a slightly modified and extended version of a mechanism proposed earlier.

Original language	English
Pages (from-to)	5921-5927
Number of pages	7
Journal	Journal of Physical Chemistry
Volume	91
Issue number	23
DOIs	https://doi.org/10.1021/j100307a021
Publication status	Published - 1987
Externally published	Yes

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@article{b2cd57fd834244b7874031f52f054ed9,

title = "Mechanism of the reaction of nitric oxide, ammonia, and oxygen over vanadia catalysts. 1. The role of oxygen studied by way of isotopic transients under dilute conditions",

abstract = "The mechanism of the selective reduction of nitric oxide with ammonia in the presence of labeled oxygen has been investigated over a series of catalysts consisting of unsupported V2O5, V2O5 on TiO2, V2O5 on SiO2/Al2O3, and V2O5 on Al2O3. The results confirm that lattice oxygen participates in the reaction. It is shown that this participation can be explained in terms of a reduction/oxidation mechanism. Water, produced as a result of the reaction involving NO, NH3, and O2, is formed at two sites; the first part comes from the reaction of gaseous nitric oxide and adsorbed ammonia via an Eley-Rideal mechanism and the other comes from a surface dehydration process. The experimental findings are explained by a slightly modified and extended version of a mechanism proposed earlier.",

author = "Janssen, {Frans J.J.G.} and {Van Den Kerkhof}, {Frans M.G.} and Hans Bosch and Ross, {Julian R.H.}",

year = "1987",

doi = "10.1021/j100307a021",

language = "English",

volume = "91",

pages = "5921--5927",

journal = "Journal of Physical Chemistry",

issn = "0022-3654",

number = "23",

}

Mechanism of the reaction of nitric oxide, ammonia, and oxygen over vanadia catalysts. 1. The role of oxygen studied by way of isotopic transients under dilute conditions. / Janssen, Frans J.J.G.; Van Den Kerkhof, Frans M.G.; Bosch, Hans et al.
In: Journal of Physical Chemistry, Vol. 91, No. 23, 1987, p. 5921-5927.

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

TY - JOUR

T1 - Mechanism of the reaction of nitric oxide, ammonia, and oxygen over vanadia catalysts. 1. The role of oxygen studied by way of isotopic transients under dilute conditions

AU - Janssen, Frans J.J.G.

AU - Van Den Kerkhof, Frans M.G.

AU - Bosch, Hans

AU - Ross, Julian R.H.

PY - 1987

Y1 - 1987

N2 - The mechanism of the selective reduction of nitric oxide with ammonia in the presence of labeled oxygen has been investigated over a series of catalysts consisting of unsupported V2O5, V2O5 on TiO2, V2O5 on SiO2/Al2O3, and V2O5 on Al2O3. The results confirm that lattice oxygen participates in the reaction. It is shown that this participation can be explained in terms of a reduction/oxidation mechanism. Water, produced as a result of the reaction involving NO, NH3, and O2, is formed at two sites; the first part comes from the reaction of gaseous nitric oxide and adsorbed ammonia via an Eley-Rideal mechanism and the other comes from a surface dehydration process. The experimental findings are explained by a slightly modified and extended version of a mechanism proposed earlier.

AB - The mechanism of the selective reduction of nitric oxide with ammonia in the presence of labeled oxygen has been investigated over a series of catalysts consisting of unsupported V2O5, V2O5 on TiO2, V2O5 on SiO2/Al2O3, and V2O5 on Al2O3. The results confirm that lattice oxygen participates in the reaction. It is shown that this participation can be explained in terms of a reduction/oxidation mechanism. Water, produced as a result of the reaction involving NO, NH3, and O2, is formed at two sites; the first part comes from the reaction of gaseous nitric oxide and adsorbed ammonia via an Eley-Rideal mechanism and the other comes from a surface dehydration process. The experimental findings are explained by a slightly modified and extended version of a mechanism proposed earlier.

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U2 - 10.1021/j100307a021

DO - 10.1021/j100307a021

M3 - Article

AN - SCOPUS:33845281797

SN - 0022-3654

VL - 91

SP - 5921

EP - 5927

JO - Journal of Physical Chemistry

JF - Journal of Physical Chemistry

IS - 23

ER -

Mechanism of the reaction of nitric oxide, ammonia, and oxygen over vanadia catalysts. 1. The role of oxygen studied by way of isotopic transients under dilute conditions

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