Ni-based catalysts supported on Mg–Al hydrotalcites with different morphologies for CO2 methanation: exploring the effect of metal–support interaction

2020 ◽  
Vol 10 (6) ◽  
pp. 1902-1913 ◽  
Author(s):  
Jie Ren ◽  
Chalachew Mebrahtu ◽  
Regina Palkovits
Keyword(s):  
Co2 Methanation ◽  
Support Interaction ◽  
Highly Active ◽  
Metal Support Interaction ◽  
Metal Support

Ni-based Mg–Al hydrotalcite catalysts with perfect morphologies were proven to be highly active and stable during CO2 methanation.

Co-processing of hydrodeoxygenation and hydrodesulfurization of phenol and dibenzothiophene with NiMo/Al2O3–ZrO2 and NiMo/TiO2–ZrO2 catalysts

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Jesús Andrés Tavizón Pozos ◽  
Gerardo Chávez Esquivel ◽  
Ignacio Cervantes Arista ◽  
José Antonio de los Reyes Heredia ◽  
Víctor Alejandro Suárez Toriello
Keyword(s):  
Active Sites ◽  
Reaction Rate ◽  
Supported Catalysts ◽  
Initial Reaction Rate ◽  
Initial Reaction ◽  
Competition Effect ◽  
Support Interaction ◽  
Highly Active ◽  
Metal Support Interaction ◽  
Metal Support

Abstract The influence of Al2O3–ZrO2 and TiO2–ZrO2 supports on NiMo-supported catalysts at a different sulfur concentration in a model hydrodeoxygenation (HDO)-hydrodesulfurization (HDS) co-processing reaction has been studied in this work. A competition effect between phenol and dibenzothiophene (DBT) for active sites was evidenced. The competence for the active sites between phenol and DBT was measured by comparison of the initial reaction rate and selectivity at two sulfur concentrations (200 and 500 ppm S). NiMo/TiO2–ZrO2 was almost four-fold more active in phenol HDO co-processed with DBT than NiMo/Al2O3–ZrO2 catalyst. Consequently, more labile active sites are present on NiMo/TiO2–ZrO2 than in NiMo/Al2O3–ZrO2 confirmed by the decrease in co-processing competition for the active sites between phenol and DBT. DBT molecules react at hydrogenolysis sites (edge and rim) preferentially so that phenol reacts at hydrogenation sites (edge and edge). However, the hydrogenated capacity would be lost when the sulfur content was increased. In general, both catalysts showed similar functionalities but different degrees of competition according to the highly active NiMoS phase availability. TiO2–ZrO2 as the support provided weaker metal-support interaction than Al2O3–ZrO2, generating a larger fraction of easily reducible octahedrally coordinated Mo- and Ni-oxide species, causing that NiMo/TiO2–ZrO2 generated precursors of MoS2 crystallites with a longer length and stacking but with a higher degree of Ni-promotion than NiMo/Al2O3–ZrO2 catalyst.

Ultrafine AuPd nanoparticles supported on amine functionalized monochlorotriazinyl β-cyclodextrin as highly active catalysts for hydrogen evolution from formic acid dehydrogenation

2020 ◽  
Vol 10 (15) ◽  
pp. 5281-5287 ◽  
Author(s):  
Xue Liu ◽  
Dawei Gao ◽  
Yue Chi ◽  
Hongli Wang ◽  
Zhili Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Formic Acid ◽  
Hydrogen Evolution ◽  
Support Interaction ◽  
Highly Active ◽  
Amine Functionalized ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Formic Acid Dehydrogenation ◽  
Strong Metal Support Interaction

Au0.3Pd0.7/A-M-β-CD exhibits remarkable catalytic activity for hydrogen evolution from formic acid, which is attributed to strong metal–support interaction.

scholarly journals Role of oxide support in Ni based catalysts for CO2 methanation

RSC Advances ◽  
2021 ◽  
Vol 11 (29) ◽  
pp. 17648-17657
Author(s):  
Ye Hwan Lee ◽  
Jeong Yoon Ahn ◽  
Dinh Duc Nguyen ◽  
Soon Woong Chang ◽  
Sung Su Kim ◽  
...  
Keyword(s):  
Co2 Methanation ◽  
Methanation Reaction ◽  
Support Interaction ◽  
Oxide Support ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Catalytic Performances

The effect of metal–support interaction and role of support on catalytic performances during Ni based CO2 methanation reaction were investigated.

Metal–support interaction in Pd/CeO2 model catalysts for CO oxidation: from pulsed laser-ablated nanoparticles to highly active state of the catalyst

2016 ◽  
Vol 6 (17) ◽  
pp. 6650-6666 ◽  
Author(s):  
E. M. Slavinskaya ◽  
T. Yu. Kardash ◽  
O. A. Stonkus ◽  
R. V. Gulyaev ◽  
I. N. Lapin ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Pulsed Laser ◽  
Active State ◽  
Model Catalysts ◽  
Support Interaction ◽  
Highly Active ◽  
Metal Support Interaction ◽  
Metal Support

Highly active Pd/CeO2 catalysts were synthesized from nanosized Pd and ceria obtained by PLA.

Enhancing the CO2 methanation activity of Ni/CeO2 via activation treatment-determined metal-support interaction

2021 ◽  
Vol 59 ◽  
pp. 334-342
Author(s):  
Shuangxi Lin ◽  
Ziwen Hao ◽  
Jindong Shen ◽  
Xiao Chang ◽  
Shouying Huang ◽  
...  
Keyword(s):  
Co2 Methanation ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Methanation Activity

Highly active and stable Pd/MgAl2O4@MgO catalyst with electronic metal-support interaction for selective hydrogenation of isoprene

Fuel ◽  
2021 ◽  
Vol 289 ◽  
pp. 119920
Author(s):  
Zhou Yang ◽  
Shunqin Liang ◽  
Limin Sun ◽  
Xiaoli Hu ◽  
Weiping Fang ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Support Interaction ◽  
Highly Active ◽  
Metal Support Interaction ◽  
Metal Support

scholarly journals Oxygen deficient Pr6O11 nanorod supported palladium nanoparticles: highly active nanocatalysts for styrene and 4-nitrophenol hydrogenation reactions

RSC Advances ◽  
2018 ◽  
Vol 8 (31) ◽  
pp. 17504-17510 ◽  
Author(s):  
Nan Jiang ◽  
Xiao Zhou ◽  
Yi-Fan Jiang ◽  
Zhi-Wei Zhao ◽  
Liu-Bo Ma ◽  
...  
Keyword(s):  
Palladium Nanoparticles ◽  
Support Interaction ◽  
Highly Efficient ◽  
Highly Active ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Hydrogenation Reactions ◽  
Supported Palladium ◽  
Strong Metal Support Interaction

Oxygen-deficient Pd/Pr6O11 nanocatalysts with strong metal-support interaction exhibit highly efficient styrene and 4-NP hydrogenation reactions performance.

scholarly journals Solvent-free microwave synthesis of ultra-small Ru-Mo2C@CNT with strong metal-support interaction for industrial hydrogen evolution

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xueke Wu ◽  
Zuochao Wang ◽  
Dan Zhang ◽  
Yingnan Qin ◽  
Minghui Wang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Large Scale ◽  
Solvent Free ◽  
Heterogeneous Structure ◽  
Scale Production ◽  
Support Interaction ◽  
Highly Active ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Strong Metal Support Interaction

AbstractExploring a simple, fast, solvent-free synthetic method for large-scale preparation of cheap, highly active electrocatalysts for industrial hydrogen evolution reaction is one of the most promising work today. In this work, a simple, fast and solvent-free microwave pyrolysis method is used to synthesize ultra-small (3.5 nm) Ru-Mo2C@CNT catalyst with heterogeneous structure and strong metal-support interaction in one step. The Ru-Mo2C@CNT catalyst only exhibits an overpotential of 15 mV at a current density of 10 mA cm−2, and exhibits a large turnover frequency value up to 21.9 s−1 under an overpotential of 100 mV in 1.0 M KOH. In addition, this catalyst can reach high current densities of 500 mA cm−2 and 1000 mA cm−2 at low overpotentials of 56 mV and 78 mV respectively, and it displays high stability of 1000 h. This work provides a feasible way for the reasonable design of other large-scale production catalysts.

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