scholarly journals Roles of supports (γ-Al2O3, SiO2, ZrO2) and performance of metals (Ni, Co, Mo) in steam reforming of isobutanol

RSC Advances ◽  
2015 ◽  
Vol 5 (65) ◽  
pp. 52522-52532 ◽  
Author(s):  
Vimala Dhanala ◽  
Sunil K. Maity ◽  
Debaprasad Shee
Keyword(s):  
Catalytic Activity ◽  
Steam Reforming ◽  
Spent Catalyst ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
And Performance

Catalytic activity depends strongly on metal-support interaction. Nickel showed highest catalytic activity followed by cobalt and molybdenum. Shape of coke formed on spent catalyst depends on nature of metal.

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

scholarly journals Study of the Metal–Support Interaction and Electronic Effect Induced by Calcination Temperature Regulation and Their Effect on the Catalytic Performance of Glycerol Steam Reforming for Hydrogen Production

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3149
Author(s):  
Songshan Zhu ◽  
Yunzhu Wang ◽  
Jichang Lu ◽  
Huihui Lu ◽  
Sufang He ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Calcination Temperature ◽  
Steam Reforming ◽  
Electronic Effect ◽  
Catalytic Performance ◽  
Tio2 Catalyst ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Ni Species

Steam reforming of glycerol to produce hydrogen is considered to be the very promising strategy to generate clean and renewable energy. The incipient-wetness impregnation method was used to load Ni on the reducible carrier TiO2 (P25). In the process of catalyst preparation, the interaction and electronic effect between metal Ni and support TiO2 were adjusted by changing the calcination temperature, and then the activity and hydrogen production of glycerol steam reforming reaction (GSR) was explored. A series of modern characterizations including XRD, UV-vis DRS, BET, XPS, NH3-TPD, H2-TPR, TG, and Raman have been applied to systematically characterize the catalysts. The characterization results showed that the calcination temperature can contribute to varying degrees of influences on the acidity and basicity of the Ni/TiO2 catalyst, the specific surface area, together with the interaction force between Ni and the support. When the Ni/TiO2 catalyst was calcined at 600 °C, the Ni species can be produced in the form of granular NiTiO3 spinel. Consequently, due to the moderate metal–support interaction and electronic activity formed between the Ni species and the reducible support TiO2 in the NiO/Ti-600C catalyst, the granular NiTiO3 spinel can be reduced to a smaller Ni0 at a lower temperature, and thus to exhibit the best catalytic performance.

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