Catalyst adhesion enhancement by porous TiO2 layer formed on anodized titanium honeycomb substrate

Joon Hwan Choi; Jiseop Hwang; Giyeong Kim; Jong Jin Choi; Cheol Woo Ahn; Jong Woo Kim; Byung Dong Hahn; Woon Ha Yoon; Yuho Min

doi:10.1016/j.ceramint.2020.10.173

Catalyst adhesion enhancement by porous TiO₂ layer formed on anodized titanium honeycomb substrate

Joon Hwan Choi, Jiseop Hwang, Giyeong Kim, Jong Jin Choi, Cheol Woo Ahn, Jong Woo Kim, Byung Dong Hahn, Woon Ha Yoon, Yuho Min

Korea Institute of Materials Science

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

6 Scopus citations

Abstract

Titanium honeycomb substrates having TiO₂ surface with nano- to micro-sized pores were prepared by electrochemical anodization and used to make Pt-based oxidation catalyst monoliths without conventional oxide-based washcoat layers for pre-turbocharger catalyst (PTC) applications exposed to harsh conditions under very high flow rates of exhaust gas and engine vibration. Adhesion strength and CO/C₃H₆ oxidation performance of the catalysts were compared with conventional washcoated FeCrAl monolith catalysts. The intermediate porous TiO₂ layer formation by the anodization can dramatically enhance the catalyst adhesion strength without sacrificing the catalytic performance under GHSV (gas hourly space velocity) higher than 100,000 h⁻¹ for PTC.

Original language	English
Pages (from-to)	7241-7247
Number of pages	7
Journal	Ceramics International
Volume	47
Issue number	5
DOIs	https://doi.org/10.1016/j.ceramint.2020.10.173
State	Published - 1 Mar 2021

Keywords

Anodization
Platinum oxidation catalyst
Porous oxide layer
TiO

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10.1016/j.ceramint.2020.10.173

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title = "Catalyst adhesion enhancement by porous TiO2 layer formed on anodized titanium honeycomb substrate",

abstract = "Titanium honeycomb substrates having TiO2 surface with nano- to micro-sized pores were prepared by electrochemical anodization and used to make Pt-based oxidation catalyst monoliths without conventional oxide-based washcoat layers for pre-turbocharger catalyst (PTC) applications exposed to harsh conditions under very high flow rates of exhaust gas and engine vibration. Adhesion strength and CO/C3H6 oxidation performance of the catalysts were compared with conventional washcoated FeCrAl monolith catalysts. The intermediate porous TiO2 layer formation by the anodization can dramatically enhance the catalyst adhesion strength without sacrificing the catalytic performance under GHSV (gas hourly space velocity) higher than 100,000 h−1 for PTC.",

keywords = "Anodization, Platinum oxidation catalyst, Porous oxide layer, TiO",

author = "Choi, {Joon Hwan} and Jiseop Hwang and Giyeong Kim and Choi, {Jong Jin} and Ahn, {Cheol Woo} and Kim, {Jong Woo} and Hahn, {Byung Dong} and Yoon, {Woon Ha} and Yuho Min",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd and Techna Group S.r.l.",

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doi = "10.1016/j.ceramint.2020.10.173",

language = "English",

volume = "47",

pages = "7241--7247",

journal = "Ceramics International",

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T1 - Catalyst adhesion enhancement by porous TiO2 layer formed on anodized titanium honeycomb substrate

AU - Choi, Joon Hwan

AU - Hwang, Jiseop

AU - Kim, Giyeong

AU - Choi, Jong Jin

AU - Ahn, Cheol Woo

AU - Kim, Jong Woo

AU - Hahn, Byung Dong

AU - Yoon, Woon Ha

AU - Min, Yuho

PY - 2021/3/1

Y1 - 2021/3/1

N2 - Titanium honeycomb substrates having TiO2 surface with nano- to micro-sized pores were prepared by electrochemical anodization and used to make Pt-based oxidation catalyst monoliths without conventional oxide-based washcoat layers for pre-turbocharger catalyst (PTC) applications exposed to harsh conditions under very high flow rates of exhaust gas and engine vibration. Adhesion strength and CO/C3H6 oxidation performance of the catalysts were compared with conventional washcoated FeCrAl monolith catalysts. The intermediate porous TiO2 layer formation by the anodization can dramatically enhance the catalyst adhesion strength without sacrificing the catalytic performance under GHSV (gas hourly space velocity) higher than 100,000 h−1 for PTC.

AB - Titanium honeycomb substrates having TiO2 surface with nano- to micro-sized pores were prepared by electrochemical anodization and used to make Pt-based oxidation catalyst monoliths without conventional oxide-based washcoat layers for pre-turbocharger catalyst (PTC) applications exposed to harsh conditions under very high flow rates of exhaust gas and engine vibration. Adhesion strength and CO/C3H6 oxidation performance of the catalysts were compared with conventional washcoated FeCrAl monolith catalysts. The intermediate porous TiO2 layer formation by the anodization can dramatically enhance the catalyst adhesion strength without sacrificing the catalytic performance under GHSV (gas hourly space velocity) higher than 100,000 h−1 for PTC.

KW - Anodization

KW - Platinum oxidation catalyst

KW - Porous oxide layer

KW - TiO

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U2 - 10.1016/j.ceramint.2020.10.173

DO - 10.1016/j.ceramint.2020.10.173

M3 - Article

AN - SCOPUS:85094610231

SN - 0272-8842

VL - 47

SP - 7241

EP - 7247

JO - Ceramics International

JF - Ceramics International

IS - 5

ER -

Catalyst adhesion enhancement by porous TiO₂ layer formed on anodized titanium honeycomb substrate

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