OMS-2 molecular sieves doped with ceria for the development of new emission control catalyst

Research output: Contribution to conferenceAbstract

Abstract

Manganese oxide octahedral molecular sieves (OMS) are microporous, inorganic nanostructures. Manganese oxides with cryptomelane type structures (OMS-2), has a one-dimensional tunnel structure composed of edge shared MnO6 octahedra that form a 2 x 2 arrangement. [1] OMS-2 materials are hydrophobic and hence have improved hydrolytic stability under oxidation conditions. The mixed valency in OMS-2 contributes to its highly active and selective catalysis. [2] Functionality of OMS-2 can be further extended by structural incorporation of various dopants. In this work we have synthesized a range of OMS-2 based supports doped with Ce, CeZr and Pt for emission control. Materials often used for emission control applications are precious metals supported on a Ceria Zirconia mixed oxide [3-5]. Currently, one of the main challenges is to provide a catalyst which is active at low temperature, due to the high emissions of combustion engines during cold start cycles [6]. In particular, we have investigated the use of these OMS-2 hybrid catalyst supports for their activity in the oxidation reactions of CO, C3H6 and CH4 and compared with a commercial diesel oxidation catalyst. The new catalyst samples were tested under representing those in the catalytic filter of a light duty diesel vehicle. The effect of doping the OMS-2 support with Ceria and Zirconia have been studied both pre and post loading with 1wt% Pt.
Original languageEnglish
Publication statusPublished - 23 Jun 2019
Event26 NAM North American Catalysis Meeting: 26 NAM - Hyatt Regency, Chicago, United States
Duration: 23 Jun 201928 Oct 2019
https://isen.northwestern.edu/nam262019-north-american-catalysis-society-meeting

Conference

Conference26 NAM North American Catalysis Meeting
Abbreviated title26 NAM
CountryUnited States
CityChicago
Period23/06/201928/10/2019
Internet address

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Emission control
Cerium compounds
Molecular sieves
Catalysts
Oxidation
Doping (additives)
Carbon Monoxide
Precious metals
Catalyst supports
Oxides
Catalysis
Nanostructures
Tunnels
Engines

Bibliographical note

Oral communications

Cite this

Artioli, N., O'Donnell, R., Ralphs, K., Manyar, H., Duffin, J., & Grolleau, M. (2019). OMS-2 molecular sieves doped with ceria for the development of new emission control catalyst. Abstract from 26 NAM North American Catalysis Meeting, Chicago, United States.
Artioli, Nancy ; O'Donnell, Ruairi ; Ralphs, Kathryn ; Manyar, Haresh ; Duffin, John ; Grolleau, Maxime. / OMS-2 molecular sieves doped with ceria for the development of new emission control catalyst. Abstract from 26 NAM North American Catalysis Meeting, Chicago, United States.
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title = "OMS-2 molecular sieves doped with ceria for the development of new emission control catalyst",
abstract = "Manganese oxide octahedral molecular sieves (OMS) are microporous, inorganic nanostructures. Manganese oxides with cryptomelane type structures (OMS-2), has a one-dimensional tunnel structure composed of edge shared MnO6 octahedra that form a 2 x 2 arrangement. [1] OMS-2 materials are hydrophobic and hence have improved hydrolytic stability under oxidation conditions. The mixed valency in OMS-2 contributes to its highly active and selective catalysis. [2] Functionality of OMS-2 can be further extended by structural incorporation of various dopants. In this work we have synthesized a range of OMS-2 based supports doped with Ce, CeZr and Pt for emission control. Materials often used for emission control applications are precious metals supported on a Ceria Zirconia mixed oxide [3-5]. Currently, one of the main challenges is to provide a catalyst which is active at low temperature, due to the high emissions of combustion engines during cold start cycles [6]. In particular, we have investigated the use of these OMS-2 hybrid catalyst supports for their activity in the oxidation reactions of CO, C3H6 and CH4 and compared with a commercial diesel oxidation catalyst. The new catalyst samples were tested under representing those in the catalytic filter of a light duty diesel vehicle. The effect of doping the OMS-2 support with Ceria and Zirconia have been studied both pre and post loading with 1wt{\%} Pt.",
author = "Nancy Artioli and Ruairi O'Donnell and Kathryn Ralphs and Haresh Manyar and John Duffin and Maxime Grolleau",
note = "Oral communications; 26 NAM North American Catalysis Meeting : 26 NAM, 26 NAM ; Conference date: 23-06-2019 Through 28-10-2019",
year = "2019",
month = "6",
day = "23",
language = "English",
url = "https://isen.northwestern.edu/nam262019-north-american-catalysis-society-meeting",

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Artioli, N, O'Donnell, R, Ralphs, K, Manyar, H, Duffin, J & Grolleau, M 2019, 'OMS-2 molecular sieves doped with ceria for the development of new emission control catalyst', 26 NAM North American Catalysis Meeting, Chicago, United States, 23/06/2019 - 28/10/2019.

OMS-2 molecular sieves doped with ceria for the development of new emission control catalyst. / Artioli, Nancy; O'Donnell, Ruairi; Ralphs, Kathryn; Manyar, Haresh; Duffin, John; Grolleau, Maxime.

2019. Abstract from 26 NAM North American Catalysis Meeting, Chicago, United States.

Research output: Contribution to conferenceAbstract

TY - CONF

T1 - OMS-2 molecular sieves doped with ceria for the development of new emission control catalyst

AU - Artioli, Nancy

AU - O'Donnell, Ruairi

AU - Ralphs, Kathryn

AU - Manyar, Haresh

AU - Duffin, John

AU - Grolleau, Maxime

N1 - Oral communications

PY - 2019/6/23

Y1 - 2019/6/23

N2 - Manganese oxide octahedral molecular sieves (OMS) are microporous, inorganic nanostructures. Manganese oxides with cryptomelane type structures (OMS-2), has a one-dimensional tunnel structure composed of edge shared MnO6 octahedra that form a 2 x 2 arrangement. [1] OMS-2 materials are hydrophobic and hence have improved hydrolytic stability under oxidation conditions. The mixed valency in OMS-2 contributes to its highly active and selective catalysis. [2] Functionality of OMS-2 can be further extended by structural incorporation of various dopants. In this work we have synthesized a range of OMS-2 based supports doped with Ce, CeZr and Pt for emission control. Materials often used for emission control applications are precious metals supported on a Ceria Zirconia mixed oxide [3-5]. Currently, one of the main challenges is to provide a catalyst which is active at low temperature, due to the high emissions of combustion engines during cold start cycles [6]. In particular, we have investigated the use of these OMS-2 hybrid catalyst supports for their activity in the oxidation reactions of CO, C3H6 and CH4 and compared with a commercial diesel oxidation catalyst. The new catalyst samples were tested under representing those in the catalytic filter of a light duty diesel vehicle. The effect of doping the OMS-2 support with Ceria and Zirconia have been studied both pre and post loading with 1wt% Pt.

AB - Manganese oxide octahedral molecular sieves (OMS) are microporous, inorganic nanostructures. Manganese oxides with cryptomelane type structures (OMS-2), has a one-dimensional tunnel structure composed of edge shared MnO6 octahedra that form a 2 x 2 arrangement. [1] OMS-2 materials are hydrophobic and hence have improved hydrolytic stability under oxidation conditions. The mixed valency in OMS-2 contributes to its highly active and selective catalysis. [2] Functionality of OMS-2 can be further extended by structural incorporation of various dopants. In this work we have synthesized a range of OMS-2 based supports doped with Ce, CeZr and Pt for emission control. Materials often used for emission control applications are precious metals supported on a Ceria Zirconia mixed oxide [3-5]. Currently, one of the main challenges is to provide a catalyst which is active at low temperature, due to the high emissions of combustion engines during cold start cycles [6]. In particular, we have investigated the use of these OMS-2 hybrid catalyst supports for their activity in the oxidation reactions of CO, C3H6 and CH4 and compared with a commercial diesel oxidation catalyst. The new catalyst samples were tested under representing those in the catalytic filter of a light duty diesel vehicle. The effect of doping the OMS-2 support with Ceria and Zirconia have been studied both pre and post loading with 1wt% Pt.

M3 - Abstract

ER -

Artioli N, O'Donnell R, Ralphs K, Manyar H, Duffin J, Grolleau M. OMS-2 molecular sieves doped with ceria for the development of new emission control catalyst. 2019. Abstract from 26 NAM North American Catalysis Meeting, Chicago, United States.