Performance and structural features of LaNi0.5Co0.5O3 perovskite oxides for the dry reforming of methane: influence of the preparation method

2019 ◽  
Vol 43 (27) ◽  
pp. 10763-10773 ◽  
Author(s):  
Maryam Mousavi ◽  
Ali Nakhaei Pour
Keyword(s):  
Preparation Method ◽  
Perovskite Oxides ◽  
Structural Features ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Methane Dry Reforming ◽  
Magnetized Water

LaNiO3 and LaNi0.5Co0.5O3 as perovskites were synthesized in magnetized and non-magnetized water and the activity of the catalysts was evaluated in the methane dry reforming reaction with CO2.

scholarly journals Investigation of new routes for the preparation of mesoporous calcium oxide supported nickel materials used as catalysts for the methane dry reforming reaction

2020 ◽  
Vol 10 (20) ◽  
pp. 6910-6922
Author(s):  
Ola El Samrout ◽  
Leila Karam ◽  
Karam Jabbour ◽  
Pascale Massiani ◽  
Franck Launay ◽  
...  
Keyword(s):  
Calcium Oxide ◽  
Catalytic Reaction ◽  
Nickel Nanoparticles ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Methane Dry Reforming ◽  
Mesoporous Supports ◽  
Materials Used

Calcium oxide mesoporous supports were successfully synthetized and used to disperse nickel nanoparticles for the dry reforming of methane catalytic reaction.

Study of effect of preparation method and composition on the catalytic properties of complex oxides (Gd,Sr) n + 1Fe n O3n + 1 for dry reforming of methane

2017 ◽  
Vol 12 (3-4) ◽  
pp. 174-184 ◽  
Author(s):  
T. F. Sheshko ◽  
Yu. M. Serov ◽  
T. A. Kryuchkova ◽  
I. A. Khayrullina ◽  
I. V. Chislova ◽  
...  
Keyword(s):  
Preparation Method ◽  
Catalytic Properties ◽  
Complex Oxides ◽  
Dry Reforming ◽  
Dry Reforming Of Methane

scholarly journals Nickel-Containing Ceria-Zirconia Doped with Ti and Nb. Effect of Support Composition and Preparation Method on Catalytic Activity in Methane Dry Reforming

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1281
Author(s):  
Mikhail Simonov ◽  
Yulia Bespalko ◽  
Ekaterina Smal ◽  
Konstantin Valeev ◽  
Valeria Fedorova ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Structural Changes ◽  
Preparation Method ◽  
Diffuse Reflectance Spectroscopy ◽  
Fluorite Structure ◽  
Lattice Parameter ◽  
Dry Reforming ◽  
Fluorite Phase ◽  
Methane Dry Reforming ◽  
Supercritical Synthesis

Nickel-containing mixed ceria-zirconia oxides also doped by Nb and Ti have been prepared by a citrate route and by original solvothermal continuous flow synthesis in supercritical alcohols. Nickel was subsequently deposited by conventional insipient wetness impregnation. The oxides are comprised of ceria-zirconia solid solution with cubic fluorite phase. Negligible amounts of impurities of zirconia are observed for samples prepared by citrate route and doped by Ti. Supports prepared by supercritical synthesis are single-phased. XRD data, Raman, and UV-Vis DR (diffuse reflectance) spectroscopy suggest increasing lattice parameter and amount of oxygen vacancies in fluorite structure after Nb and Ti incorporation despite of the preparation method. These structural changes correlate with the catalytic activity in a methane dry reforming reaction. Catalysts synthesized under supercritical conditions are more active than the catalysts of the same composition prepared by the citrate route. The catalytic activity of samples doped with Ti and Nb is two times higher in terms of TOF (turnover frequency) and increased stability of these catalysts is attributed with the highest oxygen mobility being crucial for gasification of coke precursors.

scholarly journals The Effect of CeO2 Preparation Method on the Carbon Pathways in the Dry Reforming of Methane on Ni/CeO2 Studied by Transient Techniques

Catalysts ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 621 ◽  
Author(s):  
Constantinos M. Damaskinos ◽  
Michalis A. Vasiliades ◽  
Vassilis N. Stathopoulos ◽  
Angelos M. Efstathiou
Keyword(s):  
Preparation Method ◽  
Active Oxygen Species ◽  
Sol Gel ◽  
Synthesis Method ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Boudouard Reaction ◽  
Transient Techniques ◽  
Relative Contribution ◽  
Carbon Pathways

The present work discusses the effect of CeO2 synthesis method (thermal decomposition (TD), precipitation (PT), hydrothermal (HT), and sol-gel (SG)) on the carbon pathways of dry reforming of methane with carbon dioxide (DRM) applied at 750 °C over 5 wt% Ni/CeO2. In particular, specific transient and isotopic experiments (use of 13CO, 13CO2, and 18O2) were designed and conducted in an attempt at providing insights about the effect of support’s preparation method on the concentration (mg gcat−1), reactivity towards oxygen, and transient evolution rates (μmol gcat−1 s−1) of the inactive carbon formed under (i) CH4/He (methane decomposition), (ii) CO/He (reverse Boudouard reaction), and (iii) the copresence of the two (CH4/CO/He, use of 13CO). Moreover, important information regarding the relative contribution of CH4 and CO2 activation routes towards carbon formation under DRM reaction conditions was derived by using isotopically labelled 13CO2 in the feed gas stream. Of interest was also the amount, and the transient rate, of carbon removal via the participation of support’s labile active oxygen species.

scholarly journals Application of Microwave in Hydrogen Production from Methane Dry Reforming: Comparison Between the Conventional and Microwave-Assisted Catalytic Reforming on Improving the Energy Efficiency

Catalysts ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 618 ◽  
Author(s):  
Seyyedmajid Sharifvaghefi ◽  
Babak Shirani ◽  
Mladen Eic ◽  
Ying Zheng
Keyword(s):  
Energy Efficiency ◽  
Microwave Heating ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Conventional Heating ◽  
Feed Conversion ◽  
Methane Dry Reforming ◽  
Microwave Assisted ◽  
Reaction Conversion ◽  
Active Metal

The microwave-assisted dry reforming of methane over Ni and Ni–MgO catalysts supported on activated carbon (AC) was studied with respect to reducing reaction energy consumption. In order to optimize the reforming reaction using the microwave setup, an inclusive study was performed on the effect of operating parameters, including the type of catalysts’ active metal and their concentration in the AC support, feed flow rate, and reaction temperature on the reaction conversion and H2/CO selectivity. The methane dry reforming was also carried out using conventional heating and the results were compared to those of microwave heating. The catalysts’ activity was increased under microwave heating and as a result, the feed conversion and hydrogen selectivity were enhanced in comparison to the conventional heating method. In addition, to improve the reactants’ conversion and products’ selectivity, the thermal analysis also clarified the crucial importance of microwave heating in enhancing the energy efficiency of the reaction compared to the conventional heating.

Structural features and performance of LaNi1−xRhxO3 system for the dry reforming of methane

2008 ◽  
Vol 344 (1-2) ◽  
pp. 10-19 ◽  
Author(s):  
M.E. Rivas ◽  
J.L.G. Fierro ◽  
M.R. Goldwasser ◽  
E. Pietri ◽  
M.J. Pérez-Zurita ◽  
...  
Keyword(s):  
Structural Features ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
And Performance
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