Mesoporous silica materials modified with aggregated transition metal species (Cr, Fe and Cr-Fe) in the role of catalysts for selective catalytic oxidation of ammonia to dinitrogen

The work aims at exploring the role of pore structure, texture and morphology of various DGA-functionalized mesoporous silica materials on their rare earth element (REE) adsorption performances, both in batch and flow-through systems.

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A Comparative Study of the Selective Oxidation of NH3 to N2 over Transition Metal Catalysts

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.798-799.239 ◽

2013 ◽

Vol 798-799 ◽

pp. 239-244

Author(s):

Wen Qin Wang ◽

Xiao Long Tang ◽

Hong Hong Yi ◽

Jing Li Hu

Keyword(s):

Transition Metal ◽

Catalytic Oxidation ◽

Transition Metal Catalysts ◽

Oxidation Catalyst ◽

High Yield ◽

Incipient Wetness Impregnation ◽

Selective Catalytic Oxidation ◽

Series Of Experiments ◽

Incipient Wetness

Cu-Mn/Al2O3, Cu-Mn/TiO2and Cu-Mn/SBA-15 were prepared by incipient wetness impregnation. The activity of those catalysts for selective catalytic oxidation (SCO) of ammonia to nitrogen at low temperature (100°C~250°C) is not so satisfying. 5%Cu-5%Zr/TiO2has the highest NH3conversion and highest NO, NO2yield. 5%Cu-5%Mn/Al2O3is a promising NH3selective catalytic oxidation catalyst, but still needs further study. SBA-15 is a bad support for Cu-Mn. Al2O3-based catalysts and TiO2-based catalysts were also prepared by incipient wetness impregnation to sure the synergistic effect between transition metal. The results find the activity on Cu-Mn/Al2O3is better than Cu-Mn/TiO2, but NH3conversion on Cu-Zr/TiO2is rather well with high yield of NO. The role of supports and transition metals play in catalyst are discussed by a series of experiments. Key ward: SCO, NH3, transition metal, γ-Al2O3, TiO2, SBA-15

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Platinum deposited onto 2D and 3D mesoporous silica materials for the catalytic oxidation of volatile organic compounds: The oxidation of m-xylene and methanol

Journal of Catalysis ◽

10.1016/j.jcat.2021.08.012 ◽

2021 ◽

Author(s):

Ching-Shiun Chen ◽

Tse-Ching Chen ◽

Hung-Chi Wu ◽

Pin-Hsuan Huang ◽

Hsien-Ming Kao

Keyword(s):

Volatile Organic Compounds ◽

Mesoporous Silica ◽

Catalytic Oxidation ◽

Organic Compounds ◽

Volatile Organic ◽

Silica Materials ◽

Mesoporous Silica Materials ◽

2D And 3D

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The role of silver species on Ag/Al2O3 catalysts for the selective catalytic oxidation of ammonia to nitrogen

Journal of Catalysis ◽

10.1016/j.jcat.2008.11.004 ◽

2009 ◽

Vol 261 (1) ◽

pp. 101-109 ◽

Cited By ~ 84

Author(s):

L ZHANG ◽

C ZHANG ◽

H HE

Keyword(s):

Catalytic Oxidation ◽

Selective Catalytic Oxidation ◽

Oxidation Of Ammonia

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Selective oxidation of styrene to benzaldehyde catalyzed by Schiff base-modified ordered mesoporous silica materials impregnated with the transition metal-monosubstituted Keggin-type polyoxometalates

Applied Catalysis A General ◽

10.1016/j.apcata.2009.05.058 ◽

2009 ◽

Vol 364 (1-2) ◽

pp. 211-220 ◽

Cited By ~ 86

Author(s):

Jianglei Hu ◽

Kexin Li ◽

Wei Li ◽

Fengyan Ma ◽

Yihang Guo

Keyword(s):

Schiff Base ◽

Transition Metal ◽

Mesoporous Silica ◽

Selective Oxidation ◽

Ordered Mesoporous Silica ◽

Keggin Type ◽

Ordered Mesoporous ◽

Silica Materials ◽

Mesoporous Silica Materials

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Disentangling protein–silica interactions

Philosophical Transactions of The Royal Society A Mathematical Physical and Engineering Sciences ◽

10.1098/rsta.2011.0267 ◽

2012 ◽

Vol 370 (1963) ◽

pp. 1463-1477 ◽

Cited By ~ 10

Author(s):

Lara Giussani ◽

Gloria Tabacchi ◽

Enrica Gianotti ◽

Salvatore Coluccia ◽

Ettore Fois

Keyword(s):

Mesoporous Silica ◽

Surface Protein ◽

Silica Surfaces ◽

Counter Ions ◽

Silica Materials ◽

Modelling Studies ◽

Protein Adhesion ◽

Mesoporous Silica Materials ◽

Charge Balancing

We present the results of modelling studies aimed at the understanding of the interaction of a 7 nm sized water droplet containing a negatively charged globular protein with flat silica surfaces. We show how the droplet interaction with the surface depends on the electrostatic surface charge, and that adhesion of the droplet occurs when the surface is negatively charged as well. The key role of water and of the charge-balancing counter ions in mediating the surface-protein adhesion is highlighted. The relevance of the present results with respect to the production of bioinorganic hybrids via encapsulation of proteins inside mesoporous silica materials is discussed.

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