Soot oxidation performance with a HZSM-5 supported Ag nanoparticles catalyst and the characterization of Ag species

Hongcheng Ruan; Maiko Nishibori; Tomoki Uchiyama; Kakeru Ninomiya; Kazutaka Kamitani; Kazuo Kato; Yuko Konishi; Alexander Haensch; Nicolae Barsan; Udo Weimar; Kengo Shimanoe

doi:10.1039/c7ra06712g

Soot oxidation performance with a HZSM-5 supported Ag nanoparticles catalyst and the characterization of Ag species

Hongcheng Ruan, Maiko Nishibori, Tomoki Uchiyama, Kakeru Ninomiya, Kazutaka Kamitani, Kazuo Kato, Yuko Konishi, Alexander Haensch, Nicolae Barsan, Udo Weimar, Kengo Shimanoe

Functional Materials Science

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

9 Citations (Scopus)

Abstract

A HZSM-5 supported Ag nanoparticles catalyst, which has a Si/Al ratio of 1500, is synthesized by a simple impregnation method for soot oxidation. Ultrafine Ag nanoparticles (NPs) of 1-2 nm in diameter were well dispersed and stable without any aggregation up to 800 °C, confirmed by high resolution scanning transmission electron microscopy, X-ray photoelectron spectroscopy, and high temperature X-ray diffraction. This catalyst exhibited high intrinsic soot oxidation activity and T_max (peak temperature of DTA curves) values were 362 °C and 533 °C under tight contact and loose contact conditions, respectively. Furthermore, the physical and chemical states of Ag species before and during soot oxidation were examined by in situ X-ray absorption spectroscopy. Two kinds of Ag species (ZO^-Ag⁺ and Ag NPs) were found in this catalyst; they were reduced and crystallized after heating over 150 °C. The Ag NPs remained stable without any aggregation even after 800 °C, which means the Ag/HZSM-5 catalyst can be well regenerated after high temperature treatment, ensuring good repeatability of soot oxidation performance.

Original language	English
Pages (from-to)	43789-43797
Number of pages	9
Journal	RSC Advances
Volume	7
Issue number	69
DOIs	https://doi.org/10.1039/c7ra06712g
Publication status	Published - 2017

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)

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10.1039/c7ra06712g

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@article{0869aa264c1642a8bd5b5b049bd99303,

title = "Soot oxidation performance with a HZSM-5 supported Ag nanoparticles catalyst and the characterization of Ag species",

abstract = "A HZSM-5 supported Ag nanoparticles catalyst, which has a Si/Al ratio of 1500, is synthesized by a simple impregnation method for soot oxidation. Ultrafine Ag nanoparticles (NPs) of 1-2 nm in diameter were well dispersed and stable without any aggregation up to 800 °C, confirmed by high resolution scanning transmission electron microscopy, X-ray photoelectron spectroscopy, and high temperature X-ray diffraction. This catalyst exhibited high intrinsic soot oxidation activity and Tmax (peak temperature of DTA curves) values were 362 °C and 533 °C under tight contact and loose contact conditions, respectively. Furthermore, the physical and chemical states of Ag species before and during soot oxidation were examined by in situ X-ray absorption spectroscopy. Two kinds of Ag species (ZO-Ag+ and Ag NPs) were found in this catalyst; they were reduced and crystallized after heating over 150 °C. The Ag NPs remained stable without any aggregation even after 800 °C, which means the Ag/HZSM-5 catalyst can be well regenerated after high temperature treatment, ensuring good repeatability of soot oxidation performance.",

author = "Hongcheng Ruan and Maiko Nishibori and Tomoki Uchiyama and Kakeru Ninomiya and Kazutaka Kamitani and Kazuo Kato and Yuko Konishi and Alexander Haensch and Nicolae Barsan and Udo Weimar and Kengo Shimanoe",

note = "Funding Information: We would like to thank Dr C. Lee in STEM observations, Prof. K. Watanabe and Dr K. Suematsu for useful comments and discussions. We also would like to thank for keiji Horio Mai-crotracBEL corp. for giving us great suggestions. We acknowledge Late Prof. Y. Teraoka for all of comments and supports. The XAS measurements were performed at BL28B2 of SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal No. 2016A1435 and 2016B1302). This work was partially supported by the Photon and Quantum Basic Research Coordinated Development Program from the Ministry of Education, Culture, Sports, Science and Technology, Japan. Publisher Copyright: {\textcopyright} 2017 The Royal Society of Chemistry.",

year = "2017",

doi = "10.1039/c7ra06712g",

language = "English",

volume = "7",

pages = "43789--43797",

journal = "RSC Advances",

issn = "2046-2069",

publisher = "Royal Society of Chemistry",

number = "69",

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TY - JOUR

T1 - Soot oxidation performance with a HZSM-5 supported Ag nanoparticles catalyst and the characterization of Ag species

AU - Ruan, Hongcheng

AU - Nishibori, Maiko

AU - Uchiyama, Tomoki

AU - Ninomiya, Kakeru

AU - Kamitani, Kazutaka

AU - Kato, Kazuo

AU - Konishi, Yuko

AU - Haensch, Alexander

AU - Barsan, Nicolae

AU - Weimar, Udo

AU - Shimanoe, Kengo

N1 - Funding Information: We would like to thank Dr C. Lee in STEM observations, Prof. K. Watanabe and Dr K. Suematsu for useful comments and discussions. We also would like to thank for keiji Horio Mai-crotracBEL corp. for giving us great suggestions. We acknowledge Late Prof. Y. Teraoka for all of comments and supports. The XAS measurements were performed at BL28B2 of SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal No. 2016A1435 and 2016B1302). This work was partially supported by the Photon and Quantum Basic Research Coordinated Development Program from the Ministry of Education, Culture, Sports, Science and Technology, Japan. Publisher Copyright: © 2017 The Royal Society of Chemistry.

PY - 2017

Y1 - 2017

N2 - A HZSM-5 supported Ag nanoparticles catalyst, which has a Si/Al ratio of 1500, is synthesized by a simple impregnation method for soot oxidation. Ultrafine Ag nanoparticles (NPs) of 1-2 nm in diameter were well dispersed and stable without any aggregation up to 800 °C, confirmed by high resolution scanning transmission electron microscopy, X-ray photoelectron spectroscopy, and high temperature X-ray diffraction. This catalyst exhibited high intrinsic soot oxidation activity and Tmax (peak temperature of DTA curves) values were 362 °C and 533 °C under tight contact and loose contact conditions, respectively. Furthermore, the physical and chemical states of Ag species before and during soot oxidation were examined by in situ X-ray absorption spectroscopy. Two kinds of Ag species (ZO-Ag+ and Ag NPs) were found in this catalyst; they were reduced and crystallized after heating over 150 °C. The Ag NPs remained stable without any aggregation even after 800 °C, which means the Ag/HZSM-5 catalyst can be well regenerated after high temperature treatment, ensuring good repeatability of soot oxidation performance.

AB - A HZSM-5 supported Ag nanoparticles catalyst, which has a Si/Al ratio of 1500, is synthesized by a simple impregnation method for soot oxidation. Ultrafine Ag nanoparticles (NPs) of 1-2 nm in diameter were well dispersed and stable without any aggregation up to 800 °C, confirmed by high resolution scanning transmission electron microscopy, X-ray photoelectron spectroscopy, and high temperature X-ray diffraction. This catalyst exhibited high intrinsic soot oxidation activity and Tmax (peak temperature of DTA curves) values were 362 °C and 533 °C under tight contact and loose contact conditions, respectively. Furthermore, the physical and chemical states of Ag species before and during soot oxidation were examined by in situ X-ray absorption spectroscopy. Two kinds of Ag species (ZO-Ag+ and Ag NPs) were found in this catalyst; they were reduced and crystallized after heating over 150 °C. The Ag NPs remained stable without any aggregation even after 800 °C, which means the Ag/HZSM-5 catalyst can be well regenerated after high temperature treatment, ensuring good repeatability of soot oxidation performance.

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U2 - 10.1039/c7ra06712g

DO - 10.1039/c7ra06712g

M3 - Article

AN - SCOPUS:85029493467

SN - 2046-2069

VL - 7

SP - 43789

EP - 43797

JO - RSC Advances

JF - RSC Advances

IS - 69

ER -

Soot oxidation performance with a HZSM-5 supported Ag nanoparticles catalyst and the characterization of Ag species

Abstract

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