scholarly journals Controllable Synthesis of Ultrathin Transition-Metal Hydroxide Nanosheets and their Extended Composite Nanostructures for Enhanced Catalytic Activity in the Heck Reaction

2015 ◽  
Vol 128 (6) ◽  
pp. 2207-2210 ◽  
Author(s):  
Hua Fan ◽  
Xing Huang ◽  
Lu Shang ◽  
Yitao Cao ◽  
Yufei Zhao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Transition Metal ◽  
Heck Reaction ◽  
Metal Hydroxide ◽  
Controllable Synthesis ◽  
Composite Nanostructures

Embedding tetrahedral 3d transition metal TM4 clusters into the cavity of two-dimensional graphdiyne to construct highly efficient and nonprecious electrocatalysts for hydrogen evolution reaction

2020 ◽  
Vol 22 (6) ◽  
pp. 3254-3263 ◽  
Author(s):  
Ruiqi Ku ◽  
Guangtao Yu ◽  
Jing Gao ◽  
Xuri Huang ◽  
Wei Chen
Keyword(s):  
Catalytic Activity ◽  
Transition Metal ◽  
Hydrogen Evolution ◽  
Structural Stability ◽  
Hydrogen Evolution Reaction ◽  
High Catalytic Activity ◽  
Two Dimensional ◽  
Composite Nanostructures ◽  
Highly Efficient ◽  
High Structural Stability

Coupled with the high structural stability and good conductivity, all the new 2D composite nanostructures TM4@GDY (TM = Sc, Ti, Mn, Fe, Co, Ni and Cu) can uniformly exhibit considerably high catalytic activity for hydrogen evolution reaction.

The effect of partial exchange of sulphonated macroporous styrene-divinylbenzene copolymers for different ions on their catalytic activity

1981 ◽  
Vol 46 (10) ◽  
pp. 2354-2363 ◽  
Author(s):  
Svatomír Kmošták ◽  
Karel Setínek
Keyword(s):  
Catalytic Activity ◽  
Transition Metal ◽  
Metal Ions ◽  
Gas Phase ◽  
Transition Metal Ions ◽  
Exchange Capacity ◽  
Total Exchange Capacity ◽  
Styrene Divinylbenzene ◽  
Na Ions ◽  
Type Of Transition

The catalytic activity of sulphonated macroporous styrene-divinylbenzene copolymers, the exchange capacity of which was neutralized from 30, 50 and 80% by Fe(III) ions and from 30% by Na ions and that of Wofatit Y-37 ion exchanger neutralized from 10% of its total exchange capacity by several transition metal ions and by sodium has been studied in isomerisation of cyclohexene and dehydration of 1-propanol in the gas phase at 130 °C. It was demonstrated that in both reactions transition metal ions exhibit additional effect to the expected neutralization of the polymer acid groups. In the case of cyclohexene isomerization, this effect depends on the degree of crosslinking of polymer mass of the catalyst. Such dependence has not been, however, observed in dehydration of 1-propanol. The type of transition metal ions did not exhibit any significant effect on the catalytic activity of the polymer catalysts studied.

Electronic structure modulation of NiS2 by transition metal doping for accelerating the hydrogen evolution reaction

2019 ◽  
Vol 7 (9) ◽  
pp. 4971-4976 ◽  
Author(s):  
Tongtong Wang ◽  
Xiaosong Guo ◽  
Jingyan Zhang ◽  
Wen Xiao ◽  
Pinxian Xi ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Catalytic Activity ◽  
Transition Metal ◽  
Hydrogen Evolution Reaction ◽  
Systematic Study ◽  
First Principles ◽  
Transition Metal Doping ◽  
First Principles Calculations ◽  
Structure Modulation ◽  
Metal Doped

We give a systematic study of the HER catalytic activity of transition metal doped NiS2 by first principles calculations and experiments.

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