On the Role of Support in Metallic Heterogeneous Catalysis: A Study of Unsupported Nickel–Cobalt Alloy Nanoparticles in Ethanol Steam Reforming

2019 ◽  
Vol 149 (4) ◽  
pp. 929-941 ◽  
Author(s):  
Gabriella Garbarino ◽  
Tullio Cavattoni ◽  
Paola Riani ◽  
Rosaria Brescia ◽  
Fabio Canepa ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Steam Reforming ◽  
Ethanol Steam Reforming ◽  
Alloy Nanoparticles ◽  
Cobalt Alloy ◽  
Nickel Cobalt ◽  
Ethanol Steam

scholarly journals Controlled Selectivity for Ethanol Steam Reforming Reaction over Doped CeO2 Surfaces: The Role of Gallium

2020 ◽  
Author(s):  
Julia Vecchietti ◽  
Pablo Lustemberg ◽  
Esteban L. Fornero ◽  
Monica Calatayud ◽  
Sebastián E. Collins ◽  
...  
Keyword(s):  
Steam Reforming ◽  
Density Functional ◽  
Coke Formation ◽  
Product Distribution ◽  
Ethanol Steam Reforming ◽  
Standing Up ◽  
Drastic Effect ◽  
Decomposition Pathway ◽  
Ethanol Steam

The ethanol steam reforming reaction, together with the adsorption and decomposition of ethanol was studied on CeO2 and gallium-doped ceria (CeGaOx) by a combined experimental and theoretical approach using infrared spectroscopy (IR), mass spectrometry (MS) and density functional theory (DFT) calculations. At 100°C, different types of monodentate ethoxy species were identified as standing-up (SU) on Ce4+ and lying-down (LD) on Ce4+ and Ga3+, with the alkyl chain more perpendicular or parallel to the surface, respectively. It is suggested that the incorporation of Ga into the ceria lattice changes the decomposition pathway of LD species, which converts to acetate instead of ethylene, attributed to the increased lattice oxygen lability in the Ce-O-Ga interface upon doping and the propensity to form Ga-H surface species. Under ethanol steam reforming conditions, Ga doping of ceria-based materials has a drastic effect by improving the H2:CO2 ratio, changing the product distribution and reducing coke formation.

Support and alloy effects on activity and product selectivity for ethanol steam reforming over supported nickel cobalt catalysts

2012 ◽  
Vol 37 (21) ◽  
pp. 16321-16332 ◽  
Author(s):  
Luwei Chen ◽  
Catherine Kai Shin Choong ◽  
Ziyi Zhong ◽  
Lin Huang ◽  
Zhan Wang ◽  
...  
Keyword(s):  
Steam Reforming ◽  
Cobalt Catalysts ◽  
Ethanol Steam Reforming ◽  
Product Selectivity ◽  
Nickel Cobalt ◽  
Ethanol Steam

Elucidation of the role of support in Rh/perovskite catalysts used in ethanol steam reforming reaction

2021 ◽  
Author(s):  
Asiel Hernández Martínez ◽  
Eduardo Lopez ◽  
Luis E. Cadús ◽  
Fabiola N. Agüero
Keyword(s):  
Steam Reforming ◽  
Ethanol Steam Reforming ◽  
Perovskite Catalysts ◽  
Ethanol Steam

scholarly journals Role of Fe Species of Ni-Based Catalysts for Efficient Low-Temperature Ethanol Steam Reforming

JACS Au ◽  
2021 ◽  
Author(s):  
Yang Wu ◽  
Chunlei Pei ◽  
Hao Tian ◽  
Tao Liu ◽  
Xianhua Zhang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Steam Reforming ◽  
Ethanol Steam Reforming ◽  
Fe Species ◽  
Ethanol Steam

scholarly journals Controlled Selectivity for Ethanol Steam Reforming Reaction over Doped CeO2 Surfaces: The Role of Gallium

2020 ◽  
Author(s):  
Julia Vecchietti ◽  
Pablo Lustemberg ◽  
Esteban L. Fornero ◽  
Monica Calatayud ◽  
Sebastián E. Collins ◽  
...  
Keyword(s):  
Steam Reforming ◽  
Density Functional ◽  
Coke Formation ◽  
Product Distribution ◽  
Ethanol Steam Reforming ◽  
Standing Up ◽  
Drastic Effect ◽  
Decomposition Pathway ◽  
Ethanol Steam

The ethanol steam reforming reaction, together with the adsorption and decomposition of ethanol was studied on CeO2 and gallium-doped ceria (CeGaOx) by a combined experimental and theoretical approach using infrared spectroscopy (IR), mass spectrometry (MS) and density functional theory (DFT) calculations. At 100°C, different types of monodentate ethoxy species were identified as standing-up (SU) on Ce4+ and lying-down (LD) on Ce4+ and Ga3+, with the alkyl chain more perpendicular or parallel to the surface, respectively. It is suggested that the incorporation of Ga into the ceria lattice changes the decomposition pathway of LD species, which converts to acetate instead of ethylene, attributed to the increased lattice oxygen lability in the Ce-O-Ga interface upon doping and the propensity to form Ga-H surface species. Under ethanol steam reforming conditions, Ga doping of ceria-based materials has a drastic effect by improving the H2:CO2 ratio, changing the product distribution and reducing coke formation.

New Insights into the Role of the Synthesis Procedure on the Performance of Co-Based Catalysts for Ethanol Steam Reforming

2018 ◽  
Vol 61 (15-17) ◽  
pp. 1734-1745 ◽  
Author(s):  
Ilenia Rossetti ◽  
Barbara Bonelli ◽  
Gianguido Ramis ◽  
Elnaz Bahadori ◽  
Roberto Nasi ◽  
...  
Keyword(s):  
Steam Reforming ◽  
Ethanol Steam Reforming ◽  
Synthesis Procedure ◽  
Ethanol Steam

Role of Sn in Ni-Sn/CeO2Catalysts for Ethanol Steam Reforming

2016 ◽  
Vol 35 (5) ◽  
pp. 651-658 ◽  
Author(s):  
Hao Tian ◽  
Xinyu Li ◽  
Sai Chen ◽  
Liang Zeng ◽  
Jinlong Gong
Keyword(s):  
Steam Reforming ◽  
Ethanol Steam Reforming ◽  
Ethanol Steam

scholarly journals Controlled selectivity for ethanol steam reforming reaction over doped CeO2 surfaces: The role of gallium

2020 ◽  
Vol 277 ◽  
pp. 119103 ◽  
Author(s):  
Julia Vecchietti ◽  
Pablo Lustemberg ◽  
Esteban L. Fornero ◽  
Mónica Calatayud ◽  
Sebastián E. Collins ◽  
...  
Keyword(s):  
Steam Reforming ◽  
Ethanol Steam Reforming ◽  
Doped Ceo2 ◽  
Ethanol Steam
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