Simultaneous use of CO and naphthalene for the reduction of NO on potassium promoted copper catalyst supported on Ce/TiO2-SiO2 and in the presence of oxygen

Camila Morales; Naima López; Gonzalo Aguila; Paulo Araya; Felipe Scott; Alberto Vergara-Fernández; Sichem Guerrero

doi:10.1016/j.matchemphys.2018.10.028

Simultaneous use of CO and naphthalene for the reduction of NO on potassium promoted copper catalyst supported on Ce/TiO₂-SiO₂ and in the presence of oxygen

Camila Morales, Naima López, Gonzalo Aguila, Paulo Araya, Felipe Scott, Alberto Vergara-Fernández, Sichem Guerrero^*

^*Corresponding author for this work

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

7 Scopus citations

Abstract

A set of Cu/Ce/TiO₂-SiO₂ and K/Cu/Ce/TiO₂-SiO₂ catalysts was used for the simultaneous use of CO and naphthalene as reducing agents for the reduction of NO in the presence of oxygen. Only 5% of TiO₂ greatly increase the activity of the catalysts. It was also found that the addition of potassium is able to tune down these oxidation reactions allowing the reduction of NO. The Cu/Ce/TiO₂-SiO₂ catalyst achieves the full conversion of naphthalene at 302 °C, 96% of CO conversion at the same temperature, and negligible conversion of NO. On the other hand, the K/Cu/Ce/TiO₂-SiO₂ catalyst reaches the full conversion of CO at 330 °C, 90% conversion of NO at 342 °C, and 70% conversion of naphthalene at the latter temperature.

Original language	English
Pages (from-to)	294-299
Number of pages	6
Journal	Materials Chemistry and Physics
Volume	222
DOIs	https://doi.org/10.1016/j.matchemphys.2018.10.028
State	Published - 15 Jan 2019

Bibliographical note

Funding Information:
The Chilean National Commission for Scientific and Technological Research (CONICYT) is gratefully acknowledged for funding this work (FONDECYT Regular Nº 1160721 and FONDEF IDeA N o ID16I10358).

Publisher Copyright:
© 2018 Elsevier B.V.

Keywords

CeO
Copper
Potassium
Selective NO reduction
TiO-SiO

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10.1016/j.matchemphys.2018.10.028

Cite this

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title = "Simultaneous use of CO and naphthalene for the reduction of NO on potassium promoted copper catalyst supported on Ce/TiO2-SiO2 and in the presence of oxygen",

abstract = "A set of Cu/Ce/TiO2-SiO2 and K/Cu/Ce/TiO2-SiO2 catalysts was used for the simultaneous use of CO and naphthalene as reducing agents for the reduction of NO in the presence of oxygen. Only 5% of TiO2 greatly increase the activity of the catalysts. It was also found that the addition of potassium is able to tune down these oxidation reactions allowing the reduction of NO. The Cu/Ce/TiO2-SiO2 catalyst achieves the full conversion of naphthalene at 302 °C, 96% of CO conversion at the same temperature, and negligible conversion of NO. On the other hand, the K/Cu/Ce/TiO2-SiO2 catalyst reaches the full conversion of CO at 330 °C, 90% conversion of NO at 342 °C, and 70% conversion of naphthalene at the latter temperature.",

keywords = "CeO, Copper, Potassium, Selective NO reduction, TiO-SiO",

author = "Camila Morales and Naima L{\'o}pez and Gonzalo Aguila and Paulo Araya and Felipe Scott and Alberto Vergara-Fern{\'a}ndez and Sichem Guerrero",

note = "Funding Information: The Chilean National Commission for Scientific and Technological Research (CONICYT) is gratefully acknowledged for funding this work (FONDECYT Regular Nº 1160721 and FONDEF IDeA N o ID16I10358). Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

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T1 - Simultaneous use of CO and naphthalene for the reduction of NO on potassium promoted copper catalyst supported on Ce/TiO2-SiO2 and in the presence of oxygen

AU - Morales, Camila

AU - López, Naima

AU - Aguila, Gonzalo

AU - Araya, Paulo

AU - Scott, Felipe

AU - Vergara-Fernández, Alberto

AU - Guerrero, Sichem

N1 - Funding Information: The Chilean National Commission for Scientific and Technological Research (CONICYT) is gratefully acknowledged for funding this work (FONDECYT Regular Nº 1160721 and FONDEF IDeA N o ID16I10358). Publisher Copyright: © 2018 Elsevier B.V.

PY - 2019/1/15

Y1 - 2019/1/15

N2 - A set of Cu/Ce/TiO2-SiO2 and K/Cu/Ce/TiO2-SiO2 catalysts was used for the simultaneous use of CO and naphthalene as reducing agents for the reduction of NO in the presence of oxygen. Only 5% of TiO2 greatly increase the activity of the catalysts. It was also found that the addition of potassium is able to tune down these oxidation reactions allowing the reduction of NO. The Cu/Ce/TiO2-SiO2 catalyst achieves the full conversion of naphthalene at 302 °C, 96% of CO conversion at the same temperature, and negligible conversion of NO. On the other hand, the K/Cu/Ce/TiO2-SiO2 catalyst reaches the full conversion of CO at 330 °C, 90% conversion of NO at 342 °C, and 70% conversion of naphthalene at the latter temperature.

AB - A set of Cu/Ce/TiO2-SiO2 and K/Cu/Ce/TiO2-SiO2 catalysts was used for the simultaneous use of CO and naphthalene as reducing agents for the reduction of NO in the presence of oxygen. Only 5% of TiO2 greatly increase the activity of the catalysts. It was also found that the addition of potassium is able to tune down these oxidation reactions allowing the reduction of NO. The Cu/Ce/TiO2-SiO2 catalyst achieves the full conversion of naphthalene at 302 °C, 96% of CO conversion at the same temperature, and negligible conversion of NO. On the other hand, the K/Cu/Ce/TiO2-SiO2 catalyst reaches the full conversion of CO at 330 °C, 90% conversion of NO at 342 °C, and 70% conversion of naphthalene at the latter temperature.

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