scholarly journals Highly Dispersed α-MoC1-x in Porous Silica for CO Hydrogenation

2013 ◽  
Vol 2013 ◽  
pp. 1-7
Author(s):  
Minglin Xiang ◽  
Juan Zou
Keyword(s):  
High Activity ◽  
Co Hydrogenation ◽  
Porous Silica ◽  
Modified Silica ◽  
Silica Supports ◽  
Highly Dispersed

A facile method has been developed to prepare highly dispersed α-MoC1-x in porous silica. By utilizing C atoms in methyl modified silica supports, α-MoC1-x/SiO2 was obtained via insitu carburization. The obtained samples exhibited high activity for CO hydrogenation.

scholarly journals A Brief Overview of Recent Progress in Porous Silica as Catalyst Supports

2021 ◽  
Vol 5 (3) ◽  
pp. 75
Author(s):  
Preeti S. Shinde ◽  
Pradnya S. Suryawanshi ◽  
Kanchan K. Patil ◽  
Vedika M. Belekar ◽  
Sandeep A. Sankpal ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
High Surface ◽  
High Surface Area ◽  
Porous Silica ◽  
Textural Properties ◽  
Silica Particles ◽  
Catalyst Supports ◽  
Silica Supports ◽  
Low Degree ◽  
Transfer Properties

Porous silica particles have shown applications in various technological fields including their use as catalyst supports in heterogeneous catalysis. The mesoporous silica particles have ordered porosity, high surface area, and good chemical stability. These interesting structural or textural properties make porous silica an attractive material for use as catalyst supports in various heterogeneous catalysis reactions. The colloidal nature of the porous silica particles is highly useful in catalytic applications as it guarantees better mass transfer properties and uniform distribution of the various metal or metal oxide nanocatalysts in solution. The catalysts show high activity, low degree of metal leaching, and ease in recycling when supported or immobilized on porous silica-based materials. In this overview, we have pointed out the importance of porous silica as catalyst supports. A variety of chemical reactions catalyzed by different catalysts loaded or embedded in porous silica supports are studied. The latest reports from the literature about the use of porous silica-based materials as catalyst supports are listed and analyzed. The new and continued trends are discussed with examples.

A phenylenediamine-based carbon dot-modified silica stationary phase for hydrophilic interaction chromatography

The Analyst ◽  
2020 ◽  
Vol 145 (3) ◽  
pp. 1056-1061 ◽  
Author(s):  
Yali Yang ◽  
Haijuan Zhang ◽  
Jia Chen ◽  
Zhan Li ◽  
Liang Zhao ◽  
...  
Keyword(s):  
Stationary Phase ◽  
Carbon Dots ◽  
Porous Silica ◽  
Hydrophilic Interaction Chromatography ◽  
Silica Spheres ◽  
Hydrophilic Interaction ◽  
Modified Silica ◽  
Carbon Dot ◽  
New Stationary Phase ◽  
Enhanced Selectivity

Red emitting carbon dots derived from p-phenylenediamine were successfully grafted onto the surface of porous silica spheres which served as a new stationary phase for hydrophilic interaction chromatography with enhanced selectivity.

Adsorption of cyclohexane and benzene on two modified silica supports

1975 ◽  
Vol 79 (23) ◽  
pp. 2555-2562 ◽  
Author(s):  
Donald Barry ◽  
Martha Cook
Keyword(s):  
Modified Silica ◽  
Silica Supports

Highly dispersed and disordered nickel–iron layered hydroxides and sulphides: robust and high-activity water oxidation catalysts

2018 ◽  
Vol 2 (7) ◽  
pp. 1561-1573 ◽  
Author(s):  
Manjunath Chatti ◽  
Alexey M. Glushenkov ◽  
Thomas Gengenbach ◽  
Gregory P. Knowles ◽  
Tiago C. Mendes ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
High Activity ◽  
Water Oxidation ◽  
Microwave Assisted Synthesis ◽  
Oxidation Catalysts ◽  
Alkaline Water ◽  
Nickel Iron ◽  
Microwave Assisted ◽  
Highly Dispersed

A rapid low-temperature microwave-assisted synthesis of nickel(iron) layered hydroxides and sulphides that exhibit robust catalytic activity for electrooxidation of alkaline water is introduced.

Highly dispersed nickel nitride nanoparticles on nickel nanosheets as an active catalyst for hydrazine electrooxidation

2020 ◽  
Vol 8 (2) ◽  
pp. 632-638 ◽  
Author(s):  
Xi Lin ◽  
He Wen ◽  
Deng-Xue Zhang ◽  
Guo-Xuan Cao ◽  
Ping Wang
Keyword(s):  
High Activity ◽  
Active Catalyst ◽  
Highly Dispersed ◽  
Nickel Nitride ◽  
Hydrazine Electrooxidation

Tiny Ni3N nanoparticles dispersed on Ni nanosheets exhibit an impressively high activity towards N2H4 electrooxidation.

Hydrodeoxygenation of dibenzofuran over SiO2, Al2O3/SiO2 and ZrO2/SiO2 supported Pt catalysts

2015 ◽  
Vol 5 (1) ◽  
pp. 465-474 ◽  
Author(s):  
Lei Wang ◽  
Huihui Wan ◽  
Shaohua Jin ◽  
Xiao Chen ◽  
Chuang Li ◽  
...  
Keyword(s):  
Platinum Nanoparticles ◽  
Pt Catalysts ◽  
Modified Silica ◽  
Supported Pt Catalysts ◽  
Highly Dispersed

Highly dispersed platinum nanoparticles are supported on Al2O3 or ZrO2 modified silica for hydrodeoxygenation of dibenzofuran.

scholarly journals Influence of the addition of Pd and Cu to cobalt catalysts prepared by SMAI for F-T synthesis

2007 ◽  
Vol 5 (1) ◽  
pp. 144-155 ◽  
Author(s):  
Li-hua Yu ◽  
Shou-min Zhang ◽  
Xianzhi Guo ◽  
Da Wang ◽  
Shu-rong Wang ◽  
...  
Keyword(s):  
Metal Atom ◽  
Co Hydrogenation ◽  
Magnetic Measurements ◽  
Weight Ratio ◽  
Cobalt Catalysts ◽  
Metallic State ◽  
Fischer Tropsch ◽  
Superparamagnetic Behavior ◽  
Highly Dispersed ◽  
Ft Ir

AbstractThe Co-Pd/SiO2 and Co-Cu/SiO2 catalysts were prepared via solvated metal atom impregnation (SMAI) method and investigated for the Fischer-Tropsch (F-T) synthesis. The catalysts contained 5wt.% Co and a weight ratio of Pd (or Cu) to Co of 1/30. XPS indicated that Co, Pd and Cu were in metallic state. The results of XPS and magnetic measurements showed that Co and Pd (Cu) were alloyed. The Co particles on the catalysts were very highly dispersed and they displayed superparamagnetic behavior. FT-IR indicated that the electrons shifted from Cu and Pd to Co. Catalytic tests showed that CO hydrogenation rates followed the order Pd-Co > Cu-Co > Co.

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