Promotion effect of palladium on Co3O4 incorporated within mesoporous MCM-41 silica for CO Oxidation

2017 ◽  
Vol 402 ◽  
pp. 99-107 ◽  
Author(s):  
Hassan M.A. Hassan ◽  
Mohamed A. Betiha ◽  
Reda F.M. Elshaarawy ◽  
M. Samy El-Shall
Keyword(s):  
Co Oxidation ◽  
Promotion Effect ◽  
Mcm 41

Low temperature CO oxidation over iron-containing MCM-41 catalysts

2005 ◽  
pp. 1441-1443 ◽  
Author(s):  
Ágnes Szegedi ◽  
Mihály Hegedűs ◽  
József L. Margitfalvi ◽  
Imre Kiricsi
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Low Temperature Co Oxidation ◽  
Mcm 41

Promotion effect of Bi species in Cu/Bi/MCM-41 catalysts for 1,4-butynediol synthesis by ethynylation of formaldehyde

2019 ◽  
Vol 127 (1) ◽  
pp. 425-436 ◽  
Author(s):  
Guihua Yang ◽  
Yuming Yu ◽  
Muhammad Usman Tahir ◽  
Shakiaz Ahmad ◽  
Xintai Su ◽  
...  
Keyword(s):  
Promotion Effect ◽  
Mcm 41

Cerium incorporating into MCM-41 mesoporous materials for CO oxidation

2013 ◽  
Vol 139 (1) ◽  
pp. 125-133 ◽  
Author(s):  
O.A. González Vargas ◽  
J.A. de los Reyes Heredia ◽  
A. Montesinos Castellanos ◽  
L.F. Chen ◽  
J.A. Wang
Keyword(s):  
Co Oxidation ◽  
Mesoporous Materials ◽  
Mcm 41

scholarly journals Promotion Effect of the Keggin Structure on the Sulfur and Water Resistance of Pt/CeTi Catalysts for CO Oxidation

Catalysts ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 4
Author(s):  
Tong Zhang ◽  
Wenge Qiu ◽  
Hongtai Zhu ◽  
Xinlei Ding ◽  
Rui Wu ◽  
...  
Keyword(s):  
Co Oxidation ◽  
High Performance ◽  
Water Resistance ◽  
Surface Acidity ◽  
Industrial Applications ◽  
Keggin Structure ◽  
Composite Oxide ◽  
Promotion Effect ◽  
So2 Adsorption

Developing a catalyst with high SO2 and H2O resistance to achieve high-performance CO oxidation for specific industrial applications is highly desirable. Here, three catalysts were prepared using cerium titanium composite oxide (CeTi), molybdophosphate with Keggin structure-modified CeTi (Keg-CeTi), and molybdophosphate without Keggin structure-modified CeTi (MoP-CeTi) as supports, and their sulfur and water resistance in CO oxidation were tested. The characterization of XRD, BET, SO2/H2O-DRIFTS, XPS, TEM, SEM, NH3/SO2-TPD, H2-TPR, and ICP techniques revealed that the high SO2 and H2O resistance of Pt/Keg-CeTi in CO oxidation was related to its stronger surface acidity, better reduction of surface cerium and molybdenum species, and lower SO2 adsorption and transformation compared to Pt/CeTi and Pt/MoP-CeTi.

Enhanced catalytic performance of Ce-MCM-41-supported Rh for CO oxidation

2021 ◽  
Author(s):  
O. A. González Vargas ◽  
J. A. de Los Reyes Heredia ◽  
V. A. Suarez-Toriello ◽  
Sean M. Anderson ◽  
L. F. Chen ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Catalytic Performance ◽  
Mcm 41

A comparative study of the incorporation of TiO2 into MCM-41 nanostructure via different approaches and its effect on the photocatalytic degradation of methylene blue and CO oxidation

2016 ◽  
Vol 120 (2) ◽  
pp. 791-807 ◽  
Author(s):  
Hassan M. A. Hassan ◽  
Shaimaa K. Mohamed ◽  
Amr Awad Ibrahim ◽  
Mohamed A. Betiha ◽  
E. A. El-Sharkawy ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Comparative Study ◽  
Photocatalytic Degradation ◽  
Co Oxidation ◽  
Mcm 41

Redistribution of iron ions in porous ferrisilicates during redox treatments

2017 ◽  
Vol 89 (4) ◽  
pp. 471-479
Author(s):  
Károly Lázár
Keyword(s):  
Co Oxidation ◽  
Catalytic Effect ◽  
Mossbauer Spectroscopy ◽  
Structural Rearrangement ◽  
Catalytic Performance ◽  
Crystalline Material ◽  
Iron Ions ◽  
Oxidation Processes ◽  
Mcm 41

Abstract Relocation of iron ions in microporous Fe-FER, (Al+Fe)-FER, Fe-MFI (FER: ferrierite, MFI: silicalite) and in mesoporous Fe-MCM-41 ferrisilicate (MCM: Mobile Crystalline Material) samples was followed during redox treatments primarily by tool of the in situ Mössbauer spectroscopy. Coexistence of various Fe3+ and Fe2+ species is demonstrated. In microporous Fe-FER and Fe-MFI existence of combined μ-oxo iron dimers, Fe3+FW-O-Fe2+EFW can be proposed. The presence of these dimers can easily be correlated with catalytic effect shown in certain oxidation processes. Structural rearrangement can also be revealed in mesoporous Fe-MCM-41 which result in improvement of catalytic performance in CO oxidation.

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