Preparation of Eggshell-Type Ru/Al<sub>2</sub>O<sub>3</sub> Catalysts for Hydrogen Production Using Steam-Methane Reforming on PEMFC

Preparation of Eggshell-Type Ru/Al<sub>2</sub>O<sub>3</sub> Catalysts for Hydrogen Production Using Steam-Methane Reforming on PEMFC

Ru-based eggshell-type catalysts, in which Ru is located at the outer region of the pellet, were prepared by the impregnation method, using spherically shaped γ-Al<sub>2</sub>O<sub>3</sub> pellets for steam-methane reforming (SMR). Ru was only supported on the external region...

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Main Authors: Jong-Heon Lee, Seongbin Jo, Tae-Young Kim, Jin-Hyeok Woo, Yeji Lee, Min-Seok Kim, Hye-Ok Park, Soo-Chool Lee, Jae-Chang Kim
Format: Article
Language:English
Published: MDPI AG 2021-08-01
Series:Catalysts
Subjects:
eggshell-type catalyst
fuel cell
steam-methane reforming
daily startup and shutdown operation
Online Access:https://www.mdpi.com/2073-4344/11/8/951
id doaj-edd83c07b8b54b1ea41987a8ec112a07
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spelling doaj-edd83c07b8b54b1ea41987a8ec112a072021-08-26T13:36:36ZengMDPI AGCatalysts2073-43442021-08-011195195110.3390/catal11080951Preparation of Eggshell-Type Ru/Al<sub>2</sub>O<sub>3</sub> Catalysts for Hydrogen Production Using Steam-Methane Reforming on PEMFCJong-Heon Lee0Seongbin Jo1Tae-Young Kim2Jin-Hyeok Woo3Yeji Lee4Min-Seok Kim5Hye-Ok Park6Soo-Chool Lee7Jae-Chang Kim8Department of Chemical Engineering, Kyungpook National University, Daegu 41566, KoreaDepartment of Chemical and Environmental Engineering, University of California-Riverside, Riverside, CA 92521, USADepartment of Chemical Engineering, Kyungpook National University, Daegu 41566, KoreaDepartment of Chemical Engineering, Kyungpook National University, Daegu 41566, KoreaResearch Institute of Advanced Energy Technology, Kyungpook National University, Daegu 41566, KoreaS-Fuelcell, Suwon 16648, KoreaSudokwon Landfill Site Management Corporation, Incheon 22688, KoreaResearch Institute of Advanced Energy Technology, Kyungpook National University, Daegu 41566, KoreaDepartment of Chemical Engineering, Kyungpook National University, Daegu 41566, KoreaRu-based eggshell-type catalysts, in which Ru is located at the outer region of the pellet, were prepared by the impregnation method, using spherically shaped γ-Al<sub>2</sub>O<sub>3</sub> pellets for steam-methane reforming (SMR). Ru was only supported on the external region of the pellet because of the strong interaction between its precursor and the alumina pellet. The Ru precursor penetrated the inside of the pellet by adding nitric acid to the impregnation solution. The distribution and thickness of the Ru layer in the catalyst can be controlled using the HNO<sub>3</sub>/Ru molar ratio and contact time at the impregnation step. Among the catalysts, the graded eggshell-type catalyst showed the highest activity and long-term stability in the SMR reaction. In addition, in the daily startup and shutdown (DSS) operation, similar to the hydrogen production environment for domestic polymer electrolyte membrane fuel cells (PEMFC), the graded eggshell-type catalyst showed high activity and stability after multiple cycles. Based on the experimental studies, it was confirmed that Ru-based catalysts are suitable for steam-methane reforming for PEMFC.https://www.mdpi.com/2073-4344/11/8/951eggshell-type catalystfuel cellsteam-methane reformingdaily startup and shutdown operation
collection DOAJ
language English
format Article
sources DOAJ
author Jong-Heon Lee
Seongbin Jo
Tae-Young Kim
Jin-Hyeok Woo
Yeji Lee
Min-Seok Kim
Hye-Ok Park
Soo-Chool Lee
Jae-Chang Kim
spellingShingle Jong-Heon Lee
Seongbin Jo
Tae-Young Kim
Jin-Hyeok Woo
Yeji Lee
Min-Seok Kim
Hye-Ok Park
Soo-Chool Lee
Jae-Chang Kim
Preparation of Eggshell-Type Ru/Al<sub>2</sub>O<sub>3</sub> Catalysts for Hydrogen Production Using Steam-Methane Reforming on PEMFC
Catalysts
eggshell-type catalyst
fuel cell
steam-methane reforming
daily startup and shutdown operation
author_facet Jong-Heon Lee
Seongbin Jo
Tae-Young Kim
Jin-Hyeok Woo
Yeji Lee
Min-Seok Kim
Hye-Ok Park
Soo-Chool Lee
Jae-Chang Kim
author_sort Jong-Heon Lee
title Preparation of Eggshell-Type Ru/Al<sub>2</sub>O<sub>3</sub> Catalysts for Hydrogen Production Using Steam-Methane Reforming on PEMFC
title_short Preparation of Eggshell-Type Ru/Al<sub>2</sub>O<sub>3</sub> Catalysts for Hydrogen Production Using Steam-Methane Reforming on PEMFC
title_full Preparation of Eggshell-Type Ru/Al<sub>2</sub>O<sub>3</sub> Catalysts for Hydrogen Production Using Steam-Methane Reforming on PEMFC
title_fullStr Preparation of Eggshell-Type Ru/Al<sub>2</sub>O<sub>3</sub> Catalysts for Hydrogen Production Using Steam-Methane Reforming on PEMFC
title_full_unstemmed Preparation of Eggshell-Type Ru/Al<sub>2</sub>O<sub>3</sub> Catalysts for Hydrogen Production Using Steam-Methane Reforming on PEMFC
title_sort preparation of eggshell-type ru/al<sub>2</sub>o<sub>3</sub> catalysts for hydrogen production using steam-methane reforming on pemfc
publisher MDPI AG
series Catalysts
issn 2073-4344
publishDate 2021-08-01
description Ru-based eggshell-type catalysts, in which Ru is located at the outer region of the pellet, were prepared by the impregnation method, using spherically shaped γ-Al<sub>2</sub>O<sub>3</sub> pellets for steam-methane reforming (SMR). Ru was only supported on the external region of the pellet because of the strong interaction between its precursor and the alumina pellet. The Ru precursor penetrated the inside of the pellet by adding nitric acid to the impregnation solution. The distribution and thickness of the Ru layer in the catalyst can be controlled using the HNO<sub>3</sub>/Ru molar ratio and contact time at the impregnation step. Among the catalysts, the graded eggshell-type catalyst showed the highest activity and long-term stability in the SMR reaction. In addition, in the daily startup and shutdown (DSS) operation, similar to the hydrogen production environment for domestic polymer electrolyte membrane fuel cells (PEMFC), the graded eggshell-type catalyst showed high activity and stability after multiple cycles. Based on the experimental studies, it was confirmed that Ru-based catalysts are suitable for steam-methane reforming for PEMFC.
topic eggshell-type catalyst
fuel cell
steam-methane reforming
daily startup and shutdown operation
url https://www.mdpi.com/2073-4344/11/8/951
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