scholarly journals In Situ Elucidation of the Active State of Co–CeOx Catalysts in the Dry Reforming of Methane: The Important Role of the Reducible Oxide Support and Interactions with Cobalt

ACS Catalysis ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 3550-3560 ◽  
Author(s):  
Feng Zhang ◽  
Zongyuan Liu ◽  
Shuhao Zhang ◽  
Nusnin Akter ◽  
Robert M. Palomino ◽  
...  
Keyword(s):  
Dry Reforming ◽  
Active State ◽  
Dry Reforming Of Methane ◽  
Oxide Support

scholarly journals Hydrogen Yield from CO2 Reforming of Methane: Impact of La2O3 Doping on Supported Ni Catalysts

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2412
Author(s):  
Ahmed Abasaeed ◽  
Samsudeen Kasim ◽  
Wasim Khan ◽  
Mahmud Sofiu ◽  
Ahmed Ibrahim ◽  
...  
Keyword(s):  
Coke Formation ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Hydrogen Yield ◽  
Co2 Reforming ◽  
Base Catalysts ◽  
Surface Areas ◽  
Oxide Support ◽  
Surface Basicity

Development of a transition metal based catalyst aiming at concomitant high activity and stability attributed to distinguished catalytic characteristics is considered as the bottleneck for dry reforming of methane (DRM). This work highlights the role of modifying zirconia (ZrO2) and alumina (Al2O3) supported nickel based catalysts using lanthanum oxide (La2O3) varying from 0 to 20 wt% during dry reforming of methane. The mesoporous catalysts with improved BET surface areas, improved dispersion, relatively lower reduction temperatures and enhanced surface basicity are identified after La2O3 doping. These factors have influenced the catalytic activity and higher hydrogen yields are found for La2O3 modified catalysts as compared to base catalysts (5 wt% Ni-ZrO2 and 5 wt% Ni-Al2O3). Post-reaction characterizations such as TGA have showed less coke formation over La2O3 modified samples. Raman spectra indicates decreased graphitization for La2O3 catalysts. The 5Ni-10La2O3-ZrO2 catalyst produced 80% hydrogen yields, 25% more than that of 5Ni-ZrO2. 5Ni-15La2O3-Al2O3 gave 84% hydrogen yields, 8% higher than that of 5Ni-Al2O3. Higher CO2 activity improved the surface carbon oxidation rate. From the study, the extent of La2O3 loading is dependent on the type of oxide support.

Dry Reforming of Methane over Ni–Al2O3 and Ni–SiO2 Catalysts: Role of Preparation Methods

2020 ◽  
Vol 150 (8) ◽  
pp. 2180-2199 ◽  
Author(s):  
S. Dekkar ◽  
S. Tezkratt ◽  
D. Sellam ◽  
K. Ikkour ◽  
K. Parkhomenko ◽  
...  
Keyword(s):  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Preparation Methods

scholarly journals Investigation of Ce(iii) promoter effects on the tri-metallic Pt, Pd, Ni/MgO catalyst in dry-reforming of methane

RSC Advances ◽  
2016 ◽  
Vol 6 (13) ◽  
pp. 10372-10384 ◽  
Author(s):  
Faris A. J. Al-Doghachi ◽  
Umer Rashid ◽  
Yun Hin Taufiq-Yap
Keyword(s):  
Dry Reforming ◽  
Hydrogen Gas ◽  
The Other ◽  
Methane Molecule ◽  
Dry Reforming Of Methane ◽  
Promoter Effects

The DRM reaction on the Pt, Pd, Ni/Mg1−XCeXO catalyst was studied where the methane molecule was activated on the Ni metal to produce hydrogen gas. The role of the other metals like Pt and Pd impregnated on the surface of the catalyst was shown.

In-situ Co-Precipitation of Ni-Mg-Al-LDH Catalytic Precursor on γ-Al2O3 for Dry Reforming of Methane: Synthesis and Evaluation

2015 ◽  
Vol 31 (5) ◽  
pp. 948-954 ◽  
Author(s):  
ZHANG Xiao-Qing ◽  
◽  
XU Yan YAN ◽  
YANG Chun-Hui ◽  
ZHANG Yan-Ping ◽  
...  
Keyword(s):  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Co Precipitation

In situ preparation of Ni nanoparticles in cerium-modified silica aerogels for coking- and sintering-resistant dry reforming of methane

2017 ◽  
Vol 41 (12) ◽  
pp. 4869-4878 ◽  
Author(s):  
Xiaoyuan Zhao ◽  
Meirong Lu ◽  
Hongrui Li ◽  
Jianhui Fang ◽  
Liyi Shi ◽  
...  
Keyword(s):  
Silica Aerogels ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Ni Nanoparticles ◽  
Modified Silica ◽  
In Situ Preparation

Ni nanoparticles in nanochannels of cerium-modified silica aerogels were in situ prepared for coking-resistant dry reforming of methane.

Dry Reforming of Methane with a Ni/Al2O3-YSZ Catalyst: The Role of the Catalyst Preparation Protocol

2008 ◽  
Vol 85 (6) ◽  
pp. 889-899 ◽  
Author(s):  
Jasmin Blanchard ◽  
Ana Julia Nsungui ◽  
Nicolas Abatzoglou ◽  
François Gitzhofer
Keyword(s):  
Catalyst Preparation ◽  
Dry Reforming ◽  
Dry Reforming Of Methane

Anti-Coking Ni/SiO2Catalyst for Dry Reforming of Methane: Role of Oleylamine/Oleic Acid Organic Pair

ChemCatChem ◽  
2015 ◽  
Vol 7 (24) ◽  
pp. 4188-4196 ◽  
Author(s):  
Xingyuan Gao ◽  
Hejun Liu ◽  
Kus Hidajat ◽  
Sibudjing Kawi
Keyword(s):  
Oleic Acid ◽  
Dry Reforming ◽  
Dry Reforming Of Methane

scholarly journals Spectroscopic and Kinetic Insights into the Methane Reforming over Ce-pyrochlores

2019 ◽  
Author(s):  
Disha Jain ◽  
Shreya Saha
Keyword(s):  
Noble Metal ◽  
Material Characterization ◽  
Reaction Pathway ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Methane Reforming ◽  
In Situ Ftir ◽  
Ftir Studies ◽  
Surface Intermediates

<p></p><p>In the present study, we have studied the effect of doping of noble metal ions in Ce-pyrochlores for dry reforming of methane (DRM). Two series of noble metal (Pt and Ru) doped pyrochlores i.e. Ce<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> and Ce<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> have been studied. Reducibility of the synthesized samples was measured to understand the interplay between the metal and support. A detailed material characterization was performed both pre-and post-reaction to highlight the changes on the surface of the catalyst. Further, the nature of surface intermediates was investigated by in situ FTIR studies. Based on these experimental insights, a comprehensive reaction pathway was developed and kinetic model was derived.</p><br><p></p>

scholarly journals Effects of Zr Doping into Ceria for the Dry Reforming of Methane over Ni/CeZrO2 Catalysts: In Situ Studies with XRD, XAFS, and AP-XPS

ACS Catalysis ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 3274-3284 ◽  
Author(s):  
Feng Zhang ◽  
Zongyuan Liu ◽  
Xiaobo Chen ◽  
Ning Rui ◽  
Luis E. Betancourt ◽  
...  
Keyword(s):  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
In Situ Studies
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