Journal ArticleDOI
Morphology-Dependent Properties of MnOx/ZrO2–CeO2 Nanostructures for the Selective Catalytic Reduction of NO with NH3
Ruihua Gao,Ruihua Gao,Dengsong Zhang,Phornphimon Maitarad,Liyi Shi,Thanyada Rungrotmongkol,Hongrui Li,Jianping Zhang,Cao Weiguo +8 more
TLDR
In this paper, the morphology effect of ZrO2-CeO2 on the performance of MnOx/ZrO 2-Co2-CoO2 catalyst for the selective catalytic reduction of NO with ammonia was investigated.Abstract:
The morphology effect of ZrO2–CeO2 on the performance of MnOx/ZrO2–CeO2 catalyst for the selective catalytic reduction of NO with ammonia was investigated. The catalytic tests showed that the MnOx/ZrO2–CeO2 nanorods achieved significantly higher NO conversions than the nanocubes and nanopolyhedra. The catalytic tests also showed that the MnOx/ZrO2–CeO2 nanorods achieved a significantly higher rate constant with respect to NO conversion than that of the nanocubes and nanopolyhedra. On the nanorods, the apparent activation energy is 25 kJ mol–1, which was much lower than the values of nanocubes and nanopolyhedra (42 and 43 kJ mol–1). The high resolution transmission electron microscopy showed that the nanorods predominately exposed {110} and {100} planes. It was demonstrated that the ZrO2–CeO2 nanorods had a strong interaction with MnOx species, which resulted in great superiority for the selective catalytic reduction of NO. The excellent catalytic activity of the MnOx/ZrO2–CeO2 nanorods should be attribute...read more
Citations
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Journal ArticleDOI
Selective Catalytic Reduction of NOx with NH3 by Using Novel Catalysts: State of the Art and Future Prospects.
Lupeng Han,Sixiang Cai,Sixiang Cai,Min Gao,Jun-ya Hasegawa,Penglu Wang,Jianping Zhang,Liyi Shi,Dengsong Zhang +8 more
TL;DR: This review summarizes the latest SCR reaction mechanisms and emerging poison-resistant mechanisms in the beginning and subsequently gives a comprehensive overview of newly developed SCR catalysts, including metal oxide catalysts ranging from VOx, MnOx, CeO2, and Fe2O3 to CuO based catalysts.
Journal ArticleDOI
Rational Design of High-Performance DeNOx Catalysts Based on MnxCo3–xO4 Nanocages Derived from Metal–Organic Frameworks
TL;DR: In this paper, a deNOx catalyst based on hollow porous MnxCo3-xO4 nanocages with a spinel structure thermally derived from nanocube-like metal-organic frameworks (Mn3[Co(CN)6]2·nH2O), which are synthesized via a self-assemble method, is presented.
Journal ArticleDOI
Morphology-dependent nanocatalysts: Rod-shaped oxides
Yong Li,Wenjie Shen +1 more
TL;DR: The correlation between the catalytic properties and the exposed facets verifies the chemical nature of the morphology effect and provides an overview of the interactions between the rod-shaped oxides and the metal nanoparticles in metal-oxide catalyst systems, involving crystal-facet-selective deposition of metal particles onto different crystal facets in the oxide supports.
Journal ArticleDOI
Manganese oxide-based catalysts for low-temperature selective catalytic reduction of NOx with NH3: A review
TL;DR: In this paper, the authors reviewed the recent progress on the Mn-based catalysts for low-temperature selective catalytic reduction (SCR) de-NOx with NH3.
Journal ArticleDOI
Oxygen Vacancy Promoting Dimethyl Carbonate Synthesis from CO2 and Methanol over Zr-Doped CeO2 Nanorods
TL;DR: In this paper, the synthesis of DMC from CO2 and methanol by Zr-doped CeO2 nanorods with different ratios of Zr/Ce has been studied at 6.8 MPa and 140 °C.
References
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Journal ArticleDOI
MnOx-CeO2 mixed oxides prepared by co-precipitation for selective catalytic reduction of NO with NH3 at low temperatures
TL;DR: In this paper, a series of manganese-cerium oxide catalysts were prepared by co-precipitation method and used for low temperature selective catalytic reduction of NO x with ammonia in the presence of excess O 2.
Journal ArticleDOI
Probing defect sites on CeO2 nanocrystals with well-defined surface planes by Raman spectroscopy and O2 adsorption.
TL;DR: In this study, ceria nanocrystals with well-defined surface planes have been synthesized and utilized for studying defect sites with both Raman spectroscopy and O(2) adsorption, and the stability and reactivity of these oxygen species are found to be surface-dependent.