Particle Size and Support Effects in Electrocatalysis

2013 ◽  
Vol 46 (8) ◽  
pp. 1858-1866 ◽  
Author(s):  
Brian E. Hayden
Keyword(s):  
Particle Size ◽  
Support Effects

Particle size and support effects in hydrogenation over supported gold catalysts

2013 ◽  
Vol 3 (2) ◽  
pp. 454-461 ◽  
Author(s):  
U. Hartfelder ◽  
C. Kartusch ◽  
M. Makosch ◽  
M. Rovezzi ◽  
J. Sá ◽  
...  
Keyword(s):  
Particle Size ◽  
Gold Catalysts ◽  
Support Effects ◽  
Supported Gold Catalysts ◽  
Supported Gold

Particle size and support effects on the complete benzene oxidation by Co and Co–Pt catalysts

2007 ◽  
Vol 42 (10) ◽  
pp. 3315-3320 ◽  
Author(s):  
Silviya Todorova ◽  
Georgi Kadinov ◽  
Krasimir Tenchev ◽  
Yuri Kalvachev ◽  
Vladislav Kostov-Kytin
Keyword(s):  
Particle Size ◽  
Benzene Oxidation ◽  
Pt Catalysts ◽  
Support Effects

Platinum Particle Size and Support Effects in NOxMediated Carbon Oxidation over Platinum Catalysts

2006 ◽  
Vol 40 (8) ◽  
pp. 2727-2733 ◽  
Author(s):  
Kenneth Villani ◽  
Walter Vermandel ◽  
Koen Smets ◽  
Duoduo Liang ◽  
Gustaaf Van Tendeloo ◽  
...  
Keyword(s):  
Particle Size ◽  
Platinum Catalysts ◽  
Platinum Particle ◽  
Carbon Oxidation ◽  
Support Effects

Pd on boron-doped hollow carbon spheres – PdO particle size and support effects

2013 ◽  
Vol 305 ◽  
pp. 36-45 ◽  
Author(s):  
Vilas Ravat ◽  
Isaac Nongwe ◽  
Reinout Meijboom ◽  
George Bepete ◽  
Neil J. Coville
Keyword(s):  
Particle Size ◽  
Carbon Spheres ◽  
Support Effects ◽  
Boron Doped ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

Microstructural characterization of laser-melted/roller-quenched dicalcium silicate

1988 ◽  
Vol 46 ◽  
pp. 582-583
Author(s):  
C. J. Chan ◽  
K. R. Venkatachari ◽  
W. M. Kriven ◽  
J. F. Young
Keyword(s):  
Particle Size ◽  
Raw Materials ◽  
Shape Change ◽  
Microstructural Characterization ◽  
Particle Size Effect ◽  
Dicalcium Silicate ◽  
Laser Melting ◽  
Uniform Size ◽  
Cell Shape Change ◽  
Wide Range

Dicalcium silicate (Ca2SiO4) is a major component of Portland cement. It has also been investigated as a potential transformation toughener alternative to zirconia. It has five polymorphs: α, α'H, α'L, β and γ. Of interest is the β-to-γ transformation on cooling at about 490°C. This transformation, accompanied by a 12% volume increase and a 4.6° unit cell shape change, is analogous to the tetragonal-to-monoclinic transformation in zirconia. Due to the processing methods used, previous studies into the particle size effect were limited by a wide range of particle size distribution. In an attempt to obtain a more uniform size, a fast quench rate involving a laser-melting/roller-quenching technique was investigated.The laser-melting/roller-quenching experiment used precompacted bars of stoichiometric γ-Ca2SiO4 powder, which were synthesized from AR grade CaCO3 and SiO2xH2O. The raw materials were mixed by conventional ceramic processing techniques, and sintered at 1450°C. The dusted γ-Ca2SiO4 powder was uniaxially pressed into 0.4 cm x 0.4 cm x 4 cm bars under 34 MPa and cold isostatically pressed under 172 MPa. The γ-Ca2SiO4 bars were melted by a 10 KW-CO2 laser.

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