Water–Gas Shift Reaction on Metal Nanoclusters Encapsulated in Mesoporous Ceria Studied with Ambient-Pressure X-ray Photoelectron Spectroscopy

ACS Nano ◽  
2012 ◽  
Vol 6 (10) ◽  
pp. 9305-9313 ◽  
Author(s):  
Cun Wen ◽  
Yuan Zhu ◽  
Yingchun Ye ◽  
Shiran Zhang ◽  
Fang Cheng ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
Water Gas Shift ◽  
Metal Nanoclusters ◽  
Water Gas Shift Reaction ◽  
X Ray ◽  
Shift Reaction ◽  
Water Gas

Importance of the Metal-Oxide Interface in Catalysis: In Situ Studies of the Water-Gas Shift Reaction by Ambient-Pressure X-ray Photoelectron Spectroscopy

2013 ◽  
Vol 125 (19) ◽  
pp. 5205-5209 ◽  
Author(s):  
Kumudu Mudiyanselage ◽  
Sanjaya D. Senanayake ◽  
Leticia Feria ◽  
Shankhamala Kundu ◽  
Ashleigh E. Baber ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
Water Gas Shift ◽  
Water Gas Shift Reaction ◽  
Oxide Interface ◽  
X Ray ◽  
Shift Reaction ◽  
Water Gas

Importance of the Metal-Oxide Interface in Catalysis: In Situ Studies of the Water-Gas Shift Reaction by Ambient-Pressure X-ray Photoelectron Spectroscopy

2013 ◽  
Vol 52 (19) ◽  
pp. 5101-5105 ◽  
Author(s):  
Kumudu Mudiyanselage ◽  
Sanjaya D. Senanayake ◽  
Leticia Feria ◽  
Shankhamala Kundu ◽  
Ashleigh E. Baber ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
Water Gas Shift ◽  
Water Gas Shift Reaction ◽  
Oxide Interface ◽  
X Ray ◽  
Shift Reaction ◽  
Water Gas

In situ time-resolved X-ray diffraction studies of Fe[sub 2]O[sub 3] and Cu, Cr-Fe[sub 2]O[sub 3] catalysts for the water-gas shift reaction

2009 ◽  
Author(s):  
Daniela Zanchet ◽  
Cristiane B. Rodella ◽  
Laura J. S. Lopes ◽  
Marco A. Logli ◽  
Valéria P. Vicentini ◽  
...  
Keyword(s):  
Water Gas Shift ◽  
Water Gas Shift Reaction ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
X Ray ◽  
Shift Reaction ◽  
Water Gas

scholarly journals Synthesis of CuNi/C and CuNi/γ-Al2O3Catalysts for the Reverse Water Gas Shift Reaction

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Maxime Lortie ◽  
Rima Isaifan ◽  
Yun Liu ◽  
Sander Mommers
Keyword(s):  
Photoelectron Spectroscopy ◽  
Synthesis Method ◽  
Water Gas Shift ◽  
Polyol Synthesis ◽  
Pt Catalysts ◽  
X Ray ◽  
Reverse Water Gas Shift ◽  
Rwgs Reaction ◽  
Shift Reaction ◽  
Water Gas

A new polyol synthesis method is described in which CuNi nanoparticles of different Cu/Ni atomic ratios were supported on both carbon and gamma-alumina and compared with Pt catalysts using the reverse water gas shift, RWGS, reaction. All catalysts were highly selective for CO formation. The concentration of CH4was less than the detection limit. Cu was the most abundant metal on the CuNi alloy surfaces, as determined by X-ray photoelectron spectroscopy, XPS, measurements. Only one CuNi alloy catalyst, Cu50Ni50/C, appeared to be as thermally stable as the Pt/C catalysts. After three temperature cycles, from 400 to 700°C, the CO yield at 700°C obtained using the Cu50Ni50/C catalyst was comparable to that obtained using a Pt/C catalyst.

H2 production through the water-gas shift reaction: An in situ time-resolved X-ray diffraction investigation of manganese OMS-2 catalyst

2010 ◽  
Vol 156 (1-2) ◽  
pp. 2-7 ◽  
Author(s):  
Shanthakumar Sithambaram ◽  
Wen Wen ◽  
Eric Njagi ◽  
Xiong-Fei Shen ◽  
Jonathan C. Hanson ◽  
...  
Keyword(s):  
H2 Production ◽  
Water Gas Shift ◽  
Water Gas Shift Reaction ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
X Ray ◽  
Shift Reaction ◽  
Water Gas

scholarly journals Hydrogen Production from the Water-Gas Shift Reaction on Iron Oxide Catalysts

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
R. Bouarab ◽  
S. Bennici ◽  
C. Mirodatos ◽  
A. Auroux
Keyword(s):  
Iron Oxide ◽  
Diffuse Reflectance ◽  
Water Gas Shift ◽  
Water Gas Shift Reaction ◽  
X Ray Diffraction ◽  
Acid Base ◽  
X Ray ◽  
Diffuse Reflectance Infrared ◽  
Shift Reaction ◽  
Water Gas

Unsupported and supported iron oxide catalysts were prepared by incipient wetness impregnation method and studied in the water-gas shift reaction (WGSR) in the temperature range 350–450°C. The techniques of characterization employed were BET, X-ray diffraction, acid-base measurements by microcalorimetry and in situ diffuse reflectance infrared Fourier transform spectroscopy. MgO, TiO2, or SiO2 was added in order to (i) obtain a catalyst exempt of chromium oxide and (ii) study the effect of their acid-base properties on catalytic activity of Fe2O3. X-ray diffraction studies, and calorimetric and diffuse reflectance infrared Fourier transform measurements reveal a complete change in the physicochemical properties of the iron oxide catalyst after MgO addition due to the formation of the spinel oxide phase. These results could indicate that the MgFe2O4 phase stabilizes the reduced iron phase, preventing its sintering under realistic WGSR conditions (high H2O partial pressures).

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