A simple co-nanocasting method to synthesize high surface area mesoporous LaCoO3 oxides for CO and NO oxidations

Yongxia Wang; Xiangzhi Cui; Yongsheng Li; Zhu Shu; Hangrong Chen; Jianlin Shi

doi:10.1016/j.micromeso.2013.03.033

A simple co-nanocasting method to synthesize high surface area mesoporous LaCoO₃ oxides for CO and NO oxidations

Yongxia Wang
, Xiangzhi Cui
, Yongsheng Li
, Zhu Shu
, Hangrong Chen
, Jianlin Shi^*

^*此作品的通讯作者

East China University of Science and Technology
CAS - Shanghai Institute of Ceramics

科研成果: 期刊稿件 › 文章 › 同行评审

57 引用（Scopus）

摘要

High surface area mesoporous LaCoO₃ oxides (270 m² g^-1) with well crystallized perovskite framework have been successfully prepared via a simple one-step co-nanocasting method using the mesoporous SiO₂ (KIT-6) template. The prepared mesoporous LaCoO ₃ material shows relatively high catalytic activity for CO oxidation and the complete CO conversion has been achieved at about 190 C, which is about 75 C lower than that of the non-mesoporous LaCoO₃. Moreover, compared with non-mesoporous counterpart, the prepared mesoporous LaCoO₃ possesses much higher catalytic activity for NO oxidation, showing rather higher NO_x storage capacity. The NO removal ratio is high up to 64% under low temperature (310 C). The enhanced catalytic activity of the mesoporous LaCoO₃ for CO and NO oxidation is attributed to its high surface area and crystal lattice defects. A catalytic mechanism of CO and NO oxidation was proposed.

源语言	英语
页（从-至）	8-15
页数	8
期刊	Microporous and Mesoporous Materials
卷	176
DOI	https://doi.org/10.1016/j.micromeso.2013.03.033
出版状态	已出版 - 2013
已对外发布	是

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@article{b20b7b412e674258b0249591bbafd886,

title = "A simple co-nanocasting method to synthesize high surface area mesoporous LaCoO3 oxides for CO and NO oxidations",

abstract = "High surface area mesoporous LaCoO3 oxides (270 m2 g-1) with well crystallized perovskite framework have been successfully prepared via a simple one-step co-nanocasting method using the mesoporous SiO2 (KIT-6) template. The prepared mesoporous LaCoO 3 material shows relatively high catalytic activity for CO oxidation and the complete CO conversion has been achieved at about 190 C, which is about 75 C lower than that of the non-mesoporous LaCoO3. Moreover, compared with non-mesoporous counterpart, the prepared mesoporous LaCoO3 possesses much higher catalytic activity for NO oxidation, showing rather higher NOx storage capacity. The NO removal ratio is high up to 64\% under low temperature (310 C). The enhanced catalytic activity of the mesoporous LaCoO3 for CO and NO oxidation is attributed to its high surface area and crystal lattice defects. A catalytic mechanism of CO and NO oxidation was proposed.",

keywords = "CO oxidation, Mesoporous, NO oxidation, Perovskite oxides",

author = "Yongxia Wang and Xiangzhi Cui and Yongsheng Li and Zhu Shu and Hangrong Chen and Jianlin Shi",

year = "2013",

doi = "10.1016/j.micromeso.2013.03.033",

language = "英语",

volume = "176",

pages = "8--15",

journal = "Microporous and Mesoporous Materials",

issn = "1387-1811",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - A simple co-nanocasting method to synthesize high surface area mesoporous LaCoO3 oxides for CO and NO oxidations

AU - Wang, Yongxia

AU - Cui, Xiangzhi

AU - Li, Yongsheng

AU - Shu, Zhu

AU - Chen, Hangrong

AU - Shi, Jianlin

PY - 2013

Y1 - 2013

N2 - High surface area mesoporous LaCoO3 oxides (270 m2 g-1) with well crystallized perovskite framework have been successfully prepared via a simple one-step co-nanocasting method using the mesoporous SiO2 (KIT-6) template. The prepared mesoporous LaCoO 3 material shows relatively high catalytic activity for CO oxidation and the complete CO conversion has been achieved at about 190 C, which is about 75 C lower than that of the non-mesoporous LaCoO3. Moreover, compared with non-mesoporous counterpart, the prepared mesoporous LaCoO3 possesses much higher catalytic activity for NO oxidation, showing rather higher NOx storage capacity. The NO removal ratio is high up to 64% under low temperature (310 C). The enhanced catalytic activity of the mesoporous LaCoO3 for CO and NO oxidation is attributed to its high surface area and crystal lattice defects. A catalytic mechanism of CO and NO oxidation was proposed.

AB - High surface area mesoporous LaCoO3 oxides (270 m2 g-1) with well crystallized perovskite framework have been successfully prepared via a simple one-step co-nanocasting method using the mesoporous SiO2 (KIT-6) template. The prepared mesoporous LaCoO 3 material shows relatively high catalytic activity for CO oxidation and the complete CO conversion has been achieved at about 190 C, which is about 75 C lower than that of the non-mesoporous LaCoO3. Moreover, compared with non-mesoporous counterpart, the prepared mesoporous LaCoO3 possesses much higher catalytic activity for NO oxidation, showing rather higher NOx storage capacity. The NO removal ratio is high up to 64% under low temperature (310 C). The enhanced catalytic activity of the mesoporous LaCoO3 for CO and NO oxidation is attributed to its high surface area and crystal lattice defects. A catalytic mechanism of CO and NO oxidation was proposed.

KW - CO oxidation

KW - Mesoporous

KW - NO oxidation

KW - Perovskite oxides

UR - https://www.scopus.com/pages/publications/84876554245

U2 - 10.1016/j.micromeso.2013.03.033

DO - 10.1016/j.micromeso.2013.03.033

M3 - 文章

AN - SCOPUS:84876554245

SN - 1387-1811

VL - 176

SP - 8

EP - 15

JO - Microporous and Mesoporous Materials

JF - Microporous and Mesoporous Materials

ER -

A simple co-nanocasting method to synthesize high surface area mesoporous LaCoO3 oxides for CO and NO oxidations

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A simple co-nanocasting method to synthesize high surface area mesoporous LaCoO₃ oxides for CO and NO oxidations