Ru nanoparticles supported on amorphous ZrO2 for CO2 methanation

2020 ◽  
Vol 10 (14) ◽  
pp. 4522-4531 ◽  
Author(s):  
Hironori Nagase ◽  
Rei Naito ◽  
Shohei Tada ◽  
Ryuji Kikuchi ◽  
Kakeru Fujiwara ◽  
...  
Keyword(s):  
Co2 Methanation ◽  
Preparation Methods ◽  
Support Materials ◽  
Ru Nanoparticles ◽  
Methanation Activity

The influence of support materials and preparation methods on CO2 methanation activity was investigated using Ru nanoparticles supported on amorphous ZrO2 (am-ZrO2), crystalline ZrO2 (cr-ZrO2), and SiO2.

Mesoporous TiO2 Support Materials for Ru-Based CO2 Methanation Catalysts

2019 ◽  
Vol 2 (5) ◽  
pp. 3220-3230 ◽  
Author(s):  
Ara Kim ◽  
Clément Sanchez ◽  
Bernard Haye ◽  
Cédric Boissière ◽  
Capucine Sassoye ◽  
...  
Keyword(s):  
Mesoporous Tio2 ◽  
Co2 Methanation ◽  
Support Materials ◽  
Tio2 Support

Pt/UiO-66 Nanocomposites as Catalysts for CO2 Methanation Process

2019 ◽  
Vol 19 (6) ◽  
pp. 3187-3196 ◽  
Author(s):  
Maria Mihet ◽  
Gabriela Blanita ◽  
Monica Dan ◽  
Lucian Barbu-Tudoran ◽  
Mihaela D Lazar
Keyword(s):  
Thermal Stability ◽  
Surface Area ◽  
Metal Organic Framework ◽  
Catalytic Performance ◽  
Molar Ratio ◽  
High Dispersion ◽  
Co2 Methanation ◽  
Preparation Methods ◽  
Good Thermal Stability ◽  
Catalytic Support

Pt/UiO-66 nanocomposites with platinum target concentration of 3 wt.% were prepared by 3 preparation methods, characterized and tested in the CO2 methanation process. Choice of the microporous UiO-66 metal-organic framework (Zr6O4(OH)4 with 1,4-benzene-dicarboxylate ligand) as catalytic support was motivated by the CO2 chemisorption capacity (proven by CO2-TPD profiles), large specific surface area (1477 m2/g) which favors a high dispersion of metal nanoparticles and good thermal stability. The preparation methods for the Pt/UiO-66 nanocomposites are: (1) wetimpregnation followed by reduction in H2 at 200 °C for 2 h; (2) wet-impregnation followed by reduction with an aqueous solution of NaBH4; and (3) “double-solvent” method, followed by reduction with NaBH4. The UiO-66 based nanocomposites were characterized by N2 adsorption–desorption (BET method), XRD, and SEM/TEM. The Pt/UiO-66 catalyst prepared by method 3 was chosen for catalytic testing due to its highest surface area, smallest platinum nanoparticles (PtNPs) size, the localization of PtNPs both on the grain’s internal and external surface and best thermal stability in the desired temperature range. Its capacity to adsorb and activate CO2 and H2 was evaluated in thermo-programmed desorption experiments (H2-TPD and CO2-TPD). Hydrogen is molecularly adsorbed, while CO2 is adsorbed both molecularly and dissociatively. The catalytic performance in the CO2 methanation process was evaluated by Temperature Programmed Reactions (TPRea, 2 °C/min, 30–350 °C), at atmospheric pressure. The best results were obtained at 350 °C, CO2:H2 molar ratio of 1:5.2 and GHSV ═ 1650 h−1. In these conditions CO2 conversion is almost 50% and CH4 selectivity is 36%, the rest of the converted CO2 being transformed in CO.

Encapsulation of Ru nanoparticles: Modifying the reactivity toward CO and CO2 methanation on highly active Ru/TiO2 catalysts

2020 ◽  
Vol 270 ◽  
pp. 118846
Author(s):  
Ali M. Abdel-Mageed ◽  
Klara Wiese ◽  
Magdalena Parlinska-Wojtan ◽  
Jabor Rabeah ◽  
Angelika Brückner ◽  
...  
Keyword(s):  
Co2 Methanation ◽  
Ru Nanoparticles ◽  
Highly Active ◽  
Co And Co2 Methanation

Raney Ni catalysts derived from different alloy precursors Part II. CO and CO2 methanation activity

2005 ◽  
Vol 22 (4) ◽  
pp. 541-546 ◽  
Author(s):  
Gun Dae Lee ◽  
Myung Jun Moon ◽  
Jeong Hwan Park ◽  
Seong Soo Park ◽  
Seong Soo Hong
Keyword(s):  
Ni Catalysts ◽  
Co2 Methanation ◽  
Raney Ni ◽  
Methanation Activity ◽  
Co And Co2 Methanation

scholarly journals Ru/Ce/Ni Metal Foams as Structured Catalysts for the Methanation of CO2

Catalysts ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 13
Author(s):  
Stefano Cimino ◽  
Elisabetta Maria Cepollaro ◽  
Luciana Lisi ◽  
Stefano Fasolin ◽  
Marco Musiani ◽  
...  
Keyword(s):  
Catalyst Deactivation ◽  
Flow Reactor ◽  
Fixed Bed ◽  
Large Temperature ◽  
Ni Foam ◽  
Co2 Methanation ◽  
Hydrogenation Of Co2 ◽  
Structured Catalysts ◽  
Temperature Programmed ◽  
Methanation Activity

The development of highly conductive structured catalysts with enhanced mass- and heat-transfer features is required for the intensification of the strongly exothermic catalytic hydrogenation of CO2 in which large temperature gradients should be avoided to prevent catalyst deactivation and to control selectivity. Therefore, in this work we set out to investigate the preparation of novel structured catalysts obtained from a commercial open cell Ni foam with high pore density (75 ppi) onto which a CeO2 layer was deposited via electroprecipitation, and, eventually, Ru was added by impregnation. Composite Ru/Ce/Ni foam catalysts, as well as simpler binary Ru/Ni and Ce/Ni catalysts were characterized by SEM-EDX, XRD, cyclic voltammetry, N2 physisorption, H2-temperature programmed reduction (TPR), and their CO2 methanation activity was assessed at atmospheric pressure in a fixed bed flow reactor via temperature programmed tests in the range from 200 to 450 °C. Thin porous CeO2 layers, uniformly deposited on the struts of the Ni foams, produced active catalytic sites for the hydrogenation of CO2 at the interface between the metal and the oxide. The methanation activity was further boosted by the dispersion of Ru within the pores of the CeO2 layer, whereas the direct deposition of Ru on Ni, by either impregnation or pulsed electrodeposition methods, was much less effective.

scholarly journals Enhancing the CO2 methanation activity of γ-Al2O3 supported mono- and bi-metallic catalysts prepared by glycerol assisted impregnation

2021 ◽  
pp. 120322
Author(s):  
Adrián Quindimil ◽  
M. Carmen Bacariza ◽  
José A. González-Marcos ◽  
Carlos Henriques ◽  
Juan R. González-Velasco
Keyword(s):  
Co2 Methanation ◽  
Methanation Activity

Ni/CeO2 catalysts with high CO2 methanation activity and high CH4 selectivity at low temperatures

2012 ◽  
Vol 37 (7) ◽  
pp. 5527-5531 ◽  
Author(s):  
Shohei Tada ◽  
Teruyuki Shimizu ◽  
Hiromichi Kameyama ◽  
Takahide Haneda ◽  
Ryuji Kikuchi
Keyword(s):  
Low Temperatures ◽  
Co2 Methanation ◽  
High Co2 ◽  
Methanation Activity

Developing Ni-based honeycomb-type catalysts using different binary oxide-supported species for synergistically enhanced CO2 methanation activity

Fuel ◽  
2019 ◽  
Vol 250 ◽  
pp. 277-284 ◽  
Author(s):  
Jeong Yoon Ahn ◽  
Soon Woong Chang ◽  
Sang Moon Lee ◽  
Sung Su Kim ◽  
Woo Jin Chung ◽  
...  
Keyword(s):  
Binary Oxide ◽  
Co2 Methanation ◽  
Methanation Activity

Ru nanoparticles stabilized by ionic liquids supported onto silica: highly active catalysts for low-temperature CO2 methanation

2018 ◽  
Vol 20 (21) ◽  
pp. 4932-4945 ◽  
Author(s):  
Xinpeng Guo ◽  
Zhijian Peng ◽  
Atsadang Traitangwong ◽  
Gang Wang ◽  
Haiyang Xu ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Low Temperature ◽  
Co2 Methanation ◽  
Schematic Representation ◽  
Ru Nanoparticles ◽  
Highly Active

Schematic representation of CO2 methanation by Ru/IL/SiO2 catalysts.

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