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.

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.

Pt NPs immobilized on a N-doped graphene@Al2O3 hybrid support as robust catalysts for low temperature CO oxidation

2018 ◽  
Vol 54 (79) ◽  
pp. 11168-11171 ◽  
Author(s):  
Zhimin Jia ◽  
Fei Huang ◽  
Jiangyong Diao ◽  
Jiayun Zhang ◽  
Jia Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Co Oxidation ◽  
Platinum Nanoparticles ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Low Temperature Co Oxidation ◽  
Doped Graphene ◽  
Strong Metal Support Interaction

Platinum nanoparticles (Pt NPs) immobilized on a N-doped graphene@Al2O3 hybrid support (Al2O3@CNx) were synthesized and exhibit superior catalytic activity for low temperature CO oxidation, due to a strong metal–support interaction between Pt NPs and the N-doped.

scholarly journals Room-Temperature CO Oxidation Catalyst: Low-Temperature Metal–Support Interaction between Platinum Nanoparticles and Nanosized Ceria

ACS Catalysis ◽  
2016 ◽  
Vol 6 (9) ◽  
pp. 6151-6155 ◽  
Author(s):  
Suresh Gatla ◽  
Daniel Aubert ◽  
Giovanni Agostini ◽  
Olivier Mathon ◽  
Sakura Pascarelli ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Platinum Nanoparticles ◽  
Room Temperature ◽  
Oxidation Catalyst ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support

Metal-Support Interaction of Pt Nanoparticles with Ionically and Non-Ionically Conductive Supports for CO Oxidation

2012 ◽  
Vol 15 (3) ◽  
pp. E14 ◽  
Author(s):  
Rima J. Isaifan ◽  
Holly A. E. Dole ◽  
Emil Obeid ◽  
Leonardo Lizarraga ◽  
Philippe Vernoux ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Pt Nanoparticles ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support

scholarly journals Overcoming the Strong Metal−Support Interaction State: CO Oxidation on TiO2(110)-Supported Pt Nanoclusters

ACS Catalysis ◽  
2011 ◽  
Vol 1 (4) ◽  
pp. 385-389 ◽  
Author(s):  
Simon Bonanni ◽  
Kamel Aït-Mansour ◽  
Harald Brune ◽  
Wolfgang Harbich
Keyword(s):  
Co Oxidation ◽  
Pt Nanoclusters ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Strong Metal Support Interaction

scholarly journals Strong Metal Support Interaction as a Key Factor of Au Activation in CO Oxidation

ChemCatChem ◽  
2018 ◽  
Vol 10 (18) ◽  
pp. 3985-3989 ◽  
Author(s):  
Alexander Yu. Klyushin ◽  
Travis E. Jones ◽  
Thomas Lunkenbein ◽  
Pierre Kube ◽  
Xuan Li ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Key Factor ◽  
Metal Support ◽  
Strong Metal Support Interaction

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.

Effect of metal-metal and metal-support interaction on activity and stability of Pd-Rh/alumina in CO oxidation

2017 ◽  
Vol 293-294 ◽  
pp. 73-81 ◽  
Author(s):  
Aleksey A. Vedyagin ◽  
Alexander M. Volodin ◽  
Roman M. Kenzhin ◽  
Vladimir O. Stoyanovskii ◽  
Yury V. Shubin ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Metal ◽  
Metal Support
Sign in / Sign up

Export Citation Format

Share Document