Effect of oxide-ion conductivity of apatite-type Ln10Si6O27 on catalytic activity for toluene combustion

By using apatite-type Ln10Si6O27 (Ln = La, Sm, Gd) solids with oxide-ion-conduction properties, the effect of conductivity on the catalytic activity of 1 wt% Pt/Ln10Si6O27 for toluene combustion was clarified. With increasing Ln3+ ion size, the lattice volume of Ln10Si6O27 increased, resulting in th...

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Autores principales:	Kenji Matsuo, Naoyoshi Nunotani, Nobuhito Imanaka
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2021
Materias:	catalyst toluene combustion apatite-type structure lanthanoid silicate conductivity Clay industries. Ceramics. Glass TP785-869
Acceso en línea:	https://doaj.org/article/b411cf31a6b445b5a9e70a8d4911558f
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spelling	oai:doaj.org-article:b411cf31a6b445b5a9e70a8d4911558f2021-11-17T14:21:59ZEffect of oxide-ion conductivity of apatite-type Ln10Si6O27 on catalytic activity for toluene combustion2187-076410.1080/21870764.2021.1992850https://doaj.org/article/b411cf31a6b445b5a9e70a8d4911558f2021-11-01T00:00:00Zhttp://dx.doi.org/10.1080/21870764.2021.1992850https://doaj.org/toc/2187-0764By using apatite-type Ln10Si6O27 (Ln = La, Sm, Gd) solids with oxide-ion-conduction properties, the effect of conductivity on the catalytic activity of 1 wt% Pt/Ln10Si6O27 for toluene combustion was clarified. With increasing Ln3+ ion size, the lattice volume of Ln10Si6O27 increased, resulting in the enhancement of the conductivity, likely due to the expansion of the oxide-ion-conducting pathway; that is, the conductivity increased in the order Gd10Si6O27 < Sm10Si6O27 < La10Si6O27. The conductivity of the Ln10Si6O27 promoter affected the oxygen release ability of 1 wt% Pt/Ln10Si6O27, which led to the oxidation of Pt0 to Pt2+/4+. Correspondingly, the Pt/Ln10Si6O27 catalyst facilitated toluene combustion, and the catalytic activity increased in the order 1 wt% Pt/Gd10Si6O27 < 1 wt% Pt/Sm10Si6O27 < 1 wt% Pt/La10Si6O27; this order was not consistent with the surface area, Pt dispersion, or acidity. These results indicate that the catalytic activity was affected by the conductivity of the Ln10Si6O27 promoter.Kenji MatsuoNaoyoshi NunotaniNobuhito ImanakaTaylor & Francis Grouparticlecatalysttoluene combustionapatite-type structurelanthanoid silicateconductivityClay industries. Ceramics. GlassTP785-869ENJournal of Asian Ceramic Societies, Vol 0, Iss 0, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	catalyst toluene combustion apatite-type structure lanthanoid silicate conductivity Clay industries. Ceramics. Glass TP785-869
spellingShingle	catalyst toluene combustion apatite-type structure lanthanoid silicate conductivity Clay industries. Ceramics. Glass TP785-869 Kenji Matsuo Naoyoshi Nunotani Nobuhito Imanaka Effect of oxide-ion conductivity of apatite-type Ln10Si6O27 on catalytic activity for toluene combustion
description	By using apatite-type Ln10Si6O27 (Ln = La, Sm, Gd) solids with oxide-ion-conduction properties, the effect of conductivity on the catalytic activity of 1 wt% Pt/Ln10Si6O27 for toluene combustion was clarified. With increasing Ln3+ ion size, the lattice volume of Ln10Si6O27 increased, resulting in the enhancement of the conductivity, likely due to the expansion of the oxide-ion-conducting pathway; that is, the conductivity increased in the order Gd10Si6O27 < Sm10Si6O27 < La10Si6O27. The conductivity of the Ln10Si6O27 promoter affected the oxygen release ability of 1 wt% Pt/Ln10Si6O27, which led to the oxidation of Pt0 to Pt2+/4+. Correspondingly, the Pt/Ln10Si6O27 catalyst facilitated toluene combustion, and the catalytic activity increased in the order 1 wt% Pt/Gd10Si6O27 < 1 wt% Pt/Sm10Si6O27 < 1 wt% Pt/La10Si6O27; this order was not consistent with the surface area, Pt dispersion, or acidity. These results indicate that the catalytic activity was affected by the conductivity of the Ln10Si6O27 promoter.
format	article
author	Kenji Matsuo Naoyoshi Nunotani Nobuhito Imanaka
author_facet	Kenji Matsuo Naoyoshi Nunotani Nobuhito Imanaka
author_sort	Kenji Matsuo
title	Effect of oxide-ion conductivity of apatite-type Ln10Si6O27 on catalytic activity for toluene combustion
title_short	Effect of oxide-ion conductivity of apatite-type Ln10Si6O27 on catalytic activity for toluene combustion
title_full	Effect of oxide-ion conductivity of apatite-type Ln10Si6O27 on catalytic activity for toluene combustion
title_fullStr	Effect of oxide-ion conductivity of apatite-type Ln10Si6O27 on catalytic activity for toluene combustion
title_full_unstemmed	Effect of oxide-ion conductivity of apatite-type Ln10Si6O27 on catalytic activity for toluene combustion
title_sort	effect of oxide-ion conductivity of apatite-type ln10si6o27 on catalytic activity for toluene combustion
publisher	Taylor & Francis Group
publishDate	2021
url	https://doaj.org/article/b411cf31a6b445b5a9e70a8d4911558f
work_keys_str_mv	AT kenjimatsuo effectofoxideionconductivityofapatitetypeln10si6o27oncatalyticactivityfortoluenecombustion AT naoyoshinunotani effectofoxideionconductivityofapatitetypeln10si6o27oncatalyticactivityfortoluenecombustion AT nobuhitoimanaka effectofoxideionconductivityofapatitetypeln10si6o27oncatalyticactivityfortoluenecombustion
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Effect of oxide-ion conductivity of apatite-type Ln10Si6O27 on catalytic activity for toluene combustion

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