Metal–support interaction-modulated catalytic activity of Ru nanoparticles on Sm2O3 for efficient ammonia decomposition

2021 ◽  
Vol 11 (8) ◽  
pp. 2915-2923
Author(s):  
Xilun Zhang ◽  
Lin Liu ◽  
Ji Feng ◽  
Xiaohua Ju ◽  
Jiemin Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ammonia Decomposition ◽  
Support Interaction ◽  
Ru Nanoparticles ◽  
Metal Support Interaction ◽  
Metal Support

The activity of Ru/Sm2O3 catalyst for ammonia decomposition can be greatly improved by modulating the metal–support interaction of the catalyst.

Electronic metal–support interactions enhance the ammonia synthesis activity over ruthenium supported on Zr-modified CeO2 catalysts

RSC Advances ◽  
2016 ◽  
Vol 6 (56) ◽  
pp. 51106-51110 ◽  
Author(s):  
Zhanwei Ma ◽  
Xumao Xiong ◽  
Chengli Song ◽  
Bin Hu ◽  
Weiqiang Zhang
Keyword(s):  
Catalytic Activity ◽  
Electronic Properties ◽  
Ammonia Synthesis ◽  
Band Center ◽  
Support Interaction ◽  
Ru Nanoparticles ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Synthesis Activity ◽  
Metal Support Interactions

Doping Zr4+ alters the electronic properties of the support. The electronic metal–support interaction produces the upshift of d-band center of Ru nanoparticles, which further influences the catalytic activity of ammonia synthesis.

Effects of rare earth metal doping on Au/ReZrO2 catalysts for efficient hydrogen generation from formic acid

2021 ◽  
Vol 45 (12) ◽  
pp. 5704-5711
Author(s):  
Luming Wu ◽  
Yu Hao ◽  
Shaohua Chen ◽  
Rui Chen ◽  
Pingchuan Sun ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Rare Earth ◽  
Rare Earth Metal ◽  
Oxygen Vacancies ◽  
Hydrogen Generation ◽  
Earth Metal ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Metal Doped

Rare earth metal doped ZrO2 can promote the formation of oxygen vacancies in zirconia, which enhances the metal–support interaction, finally promoting catalytic activity of FA dehydrogenation.

Trimetallic RuxMoNi Catalysts Supported on SBA-15 for the Hydrodesulfurization of Dibenzothiophene

2018 ◽  
Vol 17 (5) ◽  
Author(s):  
N.L. Torres-García ◽  
R. Huirache-Acuña ◽  
T.A. Zepeda-Partida ◽  
B. Pawelec ◽  
J.L.G. Fierro ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Catalytic Activity ◽  
Chelating Agent ◽  
Active Phase ◽  
Atomic Ratio ◽  
Support Interaction ◽  
Micro Raman Spectroscopy ◽  
Metal Support Interaction ◽  
Sulfided Catalysts ◽  
Metal Support

Abstract In this work, novel trimetallic catalysts based on transition metal sulphides (Ru, Mo and Ni) supported on SBA-15 were synthesized. Citric acid (CA) was used as chelating agent in order to enhance the dispersion of the active phase and minimize the metal-support interaction. Sulfided catalysts were evaluated in the reaction of hydrodesulfurization (HDS) of dibenzothiophene (DBT) at 320 °C and 54.5 atm of total H2 pressure. The effects of different Ru/(Ni + Mo) atomic ratios on the active phase were studied. The catalysts were characterized using Micro-Raman spectroscopy, DRIFTS, XRD, XPS, HR-TEM and SEM techniques. Results have shown that there was a better dispersion of the metallic phases, which improves the physicochemical properties of the catalysts, increasing the catalytic activity. The trimetallic RuxMoNi catalyst with the lowest atomic ratio, have shown superior catalytic activity compared to their higher atomic ratio counterparts. The interaction of the chelating agent improved the catalytic activity, which was superior to that observed for NiMo based catalysts, considered one of the most active hydrotreating catalysts.

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.

Influence of sp3–sp2 Carbon Nanodomains on Metal/Support Interaction, Catalyst Durability, and Catalytic Activity for the Oxygen Reduction Reaction

2016 ◽  
Vol 8 (35) ◽  
pp. 23260-23269 ◽  
Author(s):  
Carlos A. Campos-Roldán ◽  
Guadalupe Ramos-Sánchez ◽  
Rosa G. Gonzalez-Huerta ◽  
Jorge R. Vargas García ◽  
Perla B. Balbuena ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Catalyst Durability

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.

Enhanced Activity of Fe-Doped Cu/H-Sep for the SCR of NO with Propylene in the Presence of Oxygen

2014 ◽  
Vol 700 ◽  
pp. 261-264
Author(s):  
Yang Li ◽  
Qing Ye ◽  
Zhi Hao Zhang ◽  
Yun Fang Qi ◽  
Li Sha Liu
Keyword(s):  
Catalytic Activity ◽  
Incipient Wetness Impregnation ◽  
Impregnation Method ◽  
Copper Species ◽  
Catalytic Activities ◽  
Support Interaction ◽  
Scr Of No ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Incipient Wetness

Cu/H-Sep and Cu-Fe/H-Sep samples were prepared by the incipient wetness impregnation method. These catalysts were characterized by means of XRF, XRD, BET, XPS, and H2-TPR techniques, and their catalytic activities were performed by the SCR of NO with propylene. The results show that the Cu-Fe/H-Sep catalyst exhibited the best performance in the C3H6-SCR of NO. After investigation by H2-TPR, XRD and XPS, the result showed that the higher reducibility, more amount of isolated Cu2+, higher dispersion of copper species, and stronger metal-support interaction were responsible for the excellent catalytic activity of Cu-Fe/H-Sep.

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