Hollow MnOx-CeO2 nanospheres prepared by a green route: A novel low-temperature NH3-SCR catalyst

Haoxi Jiang; Jing Zhao; Dongyu Jiang; Minhua Zhang

doi:10.1007/s10562-013-1113-4

Hollow MnO_x-CeO₂ nanospheres prepared by a green route: A novel low-temperature NH₃-SCR catalyst

Haoxi Jiang, Jing Zhao, Dongyu Jiang, Minhua Zhang

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

46 Scopus citations

Abstract

A series of manganese-cerium oxide (MnO_x-CeO₂) catalysts were successfully prepared by supercritical antisolvent process and used for low temperature selective catalytic reduction (SCR) of NOx with NH ₃. The physicochemical properties of the catalysts were studied by using high-resolution transmission electron microscope, N2 adsorption, X-ray diffraction, X-ray photoelectron spectra, Raman spectra and temperature programmed reduction etc. Hollow spherical morphologies, nanocrystalline structures and solid solution structures were detected for these catalysts. The most active hollow nanospheres were obtained with a molar Mn/(Mn?Ce) ratio of 0.32 and a calcination temperature of 500 °C. Higher surface area, better oxygen mobility and richer surface active oxygen species are responsible for the good performance. The hollow MnO_x- CeO₂ nanospheres can be a new alternative for the lowtemperature SCR catalysts.

Original language	English
Pages (from-to)	325-332
Number of pages	8
Journal	Catalysis Letters
Volume	144
Issue number	2
DOIs	https://doi.org/10.1007/s10562-013-1113-4
State	Published - Feb 2014
Externally published	Yes

Keywords

Hollow nanospheres
NO conversion
Selective catalytic reduction
Supercritical antisolvent process

Access to Document

10.1007/s10562-013-1113-4

Cite this

@article{a9f19723e683435c8b4030c9d05be85d,

title = "Hollow MnOx-CeO2 nanospheres prepared by a green route: A novel low-temperature NH3-SCR catalyst",

abstract = "A series of manganese-cerium oxide (MnOx-CeO2) catalysts were successfully prepared by supercritical antisolvent process and used for low temperature selective catalytic reduction (SCR) of NOx with NH 3. The physicochemical properties of the catalysts were studied by using high-resolution transmission electron microscope, N2 adsorption, X-ray diffraction, X-ray photoelectron spectra, Raman spectra and temperature programmed reduction etc. Hollow spherical morphologies, nanocrystalline structures and solid solution structures were detected for these catalysts. The most active hollow nanospheres were obtained with a molar Mn/(Mn?Ce) ratio of 0.32 and a calcination temperature of 500 °C. Higher surface area, better oxygen mobility and richer surface active oxygen species are responsible for the good performance. The hollow MnOx- CeO2 nanospheres can be a new alternative for the lowtemperature SCR catalysts.",

keywords = "Hollow nanospheres, NO conversion, Selective catalytic reduction, Supercritical antisolvent process",

author = "Haoxi Jiang and Jing Zhao and Dongyu Jiang and Minhua Zhang",

year = "2014",

month = feb,

doi = "10.1007/s10562-013-1113-4",

language = "英语",

volume = "144",

pages = "325--332",

journal = "Catalysis Letters",

issn = "1011-372X",

publisher = "Kluwer Academic Publishers",

number = "2",

}

TY - JOUR

T1 - Hollow MnOx-CeO2 nanospheres prepared by a green route

T2 - A novel low-temperature NH3-SCR catalyst

AU - Jiang, Haoxi

AU - Zhao, Jing

AU - Jiang, Dongyu

AU - Zhang, Minhua

PY - 2014/2

Y1 - 2014/2

N2 - A series of manganese-cerium oxide (MnOx-CeO2) catalysts were successfully prepared by supercritical antisolvent process and used for low temperature selective catalytic reduction (SCR) of NOx with NH 3. The physicochemical properties of the catalysts were studied by using high-resolution transmission electron microscope, N2 adsorption, X-ray diffraction, X-ray photoelectron spectra, Raman spectra and temperature programmed reduction etc. Hollow spherical morphologies, nanocrystalline structures and solid solution structures were detected for these catalysts. The most active hollow nanospheres were obtained with a molar Mn/(Mn?Ce) ratio of 0.32 and a calcination temperature of 500 °C. Higher surface area, better oxygen mobility and richer surface active oxygen species are responsible for the good performance. The hollow MnOx- CeO2 nanospheres can be a new alternative for the lowtemperature SCR catalysts.

AB - A series of manganese-cerium oxide (MnOx-CeO2) catalysts were successfully prepared by supercritical antisolvent process and used for low temperature selective catalytic reduction (SCR) of NOx with NH 3. The physicochemical properties of the catalysts were studied by using high-resolution transmission electron microscope, N2 adsorption, X-ray diffraction, X-ray photoelectron spectra, Raman spectra and temperature programmed reduction etc. Hollow spherical morphologies, nanocrystalline structures and solid solution structures were detected for these catalysts. The most active hollow nanospheres were obtained with a molar Mn/(Mn?Ce) ratio of 0.32 and a calcination temperature of 500 °C. Higher surface area, better oxygen mobility and richer surface active oxygen species are responsible for the good performance. The hollow MnOx- CeO2 nanospheres can be a new alternative for the lowtemperature SCR catalysts.

KW - Hollow nanospheres

KW - NO conversion

KW - Selective catalytic reduction

KW - Supercritical antisolvent process

UR - http://www.scopus.com/inward/record.url?scp=84896387082&partnerID=8YFLogxK

U2 - 10.1007/s10562-013-1113-4

DO - 10.1007/s10562-013-1113-4

M3 - 文章

AN - SCOPUS:84896387082

SN - 1011-372X

VL - 144

SP - 325

EP - 332

JO - Catalysis Letters

JF - Catalysis Letters

IS - 2

ER -

Hollow MnO_x-CeO₂ nanospheres prepared by a green route: A novel low-temperature NH₃-SCR catalyst

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this