Tungsten Carbide Microspheres with High Surface Area as Platinum Catalyst Supports for Enhanced Electrocatalytic Activity

2015 ◽  
Vol 162 (4) ◽  
pp. F468-F473 ◽  
Author(s):  
Leyan Xiong ◽  
Longzhen Zheng ◽  
Chuanfei Liu ◽  
Lehong Jin ◽  
Qiang Liu ◽  
...  
Keyword(s):  
Tungsten Carbide ◽  
Surface Area ◽  
Electrocatalytic Activity ◽  
Platinum Catalyst ◽  
High Surface ◽  
High Surface Area ◽  
Catalyst Supports

Porous Al2O3/Al catalyst supports fabricated by an Al(OH)3/Al mixture and the effect of agglomerates

2005 ◽  
Vol 20 (3) ◽  
pp. 672-679 ◽  
Author(s):  
Zhen-Yan Deng ◽  
Yoshihisa Tanaka ◽  
Yoshio Sakka ◽  
Yutaka Kagawa
Keyword(s):  
Surface Area ◽  
Compaction Pressure ◽  
High Surface ◽  
High Surface Area ◽  
Catalyst Supports ◽  
Al Content ◽  
Starting Mixture ◽  
Mechanical And Electrical Properties ◽  
Uniform Microstructure ◽  
Compact Density

Porous Al2O3/Al catalyst supports were fabricated using a mixture of Al(OH)3 and Al powders, followed by pressureless sintering at a temperature of 600 °C in vacuum. Different pressures were used to prepare green compacts. High compaction pressure led to a high surface area and good mechanical and electrical properties for the sintered specimens. However, when the Al content in the sintered specimen exceeded a definite value, high compaction pressure decreased the surface area abruptly. Scanning electron microscopy observations revealed that agglomeration in the starting mixture has a significant effect on the microstructure of the sintered specimens. High compaction pressure greatly eliminated the agglomerates and led to a uniform microstructure for the sintered specimens. However, when the Al content in the starting mixture was too high, Al particles in the compacts prepared by the high pressure were largely sintered due to the high compact density so that most of the pores were closed. The present study indicates that a suitable compaction pressure is critical to obtaining superior Al2O3/Al supports.

Copper nanoparticles decorated polyaniline–zeolite nanocomposite for the nanomolar simultaneous detection of hydrazine and phenylhydrazine

2016 ◽  
Vol 6 (4) ◽  
pp. 1134-1145 ◽  
Author(s):  
Balwinder Kaur ◽  
Rajendra Srivastava ◽  
Biswarup Satpati
Keyword(s):  
Surface Area ◽  
Copper Nanoparticles ◽  
Electrocatalytic Activity ◽  
High Surface ◽  
High Surface Area ◽  
Simultaneous Detection ◽  
Pani Film ◽  
Highly Dispersed

The high electrocatalytic activity of the CuNPs–PANI–Nano-ZSM-5 nanocomposite can be attributed to the synergistic contribution provided by the highly dispersed copper nanoparticles and conductive PANI film on high surface area Nano-ZSM-5.

The preparation and use of high surface area silicon carbide catalyst supports

1986 ◽  
Vol 20 (1-2) ◽  
pp. 91-107 ◽  
Author(s):  
M. Albert Vannice ◽  
Yu-Lin Chao ◽  
Robert Mark Friedman
Keyword(s):  
Silicon Carbide ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Catalyst Supports

Surfactant free synthesis of high surface area Pt@PdM3 (M = Mn, Fe, Co, Ni, Cu) core/shell electrocatalysts with enhanced electrocatalytic activity and durability for PEM fuel cell applications

2016 ◽  
Vol 40 (10) ◽  
pp. 8681-8695 ◽  
Author(s):  
Karuppannan Mohanraju ◽  
Govindarajan Kousik ◽  
Louis Cindrella
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction ◽  
Surface Area ◽  
Electrocatalytic Activity ◽  
High Surface ◽  
High Surface Area ◽  
Pem Fuel Cell ◽  
Core Shell ◽  
Oxygen Reduction Reactions ◽  
Shell Nanostructures

High surface area core/shell nanostructures of Pt covered Pd alloys were synthesized and they exhibited enhanced electrocatalytic activity in oxygen reduction reactions.

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