New insight into electrochemical-induced synthesis of NiAl2O4/Al2O3: Synergistic effect of surface hydroxyl groups and magnetism for enhanced adsorptivity of Pd(II)

2015 ◽  
Vol 349 ◽  
pp. 485-495 ◽  
Author(s):  
N.F.M. Salleh ◽  
A.A. Jalil ◽  
S. Triwahyono ◽  
J. Efendi ◽  
R.R. Mukti ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Hydroxyl Groups ◽  
Surface Hydroxyl ◽  
Surface Hydroxyl Groups ◽  
Insight Into ◽  
Effect Of Surface

Phase transition of capillary condensed liquids in porous silica: effect of surface hydroxyl groups

1995 ◽  
Vol 267 ◽  
pp. 159-167 ◽  
Author(s):  
T. Takei ◽  
T. Konishi ◽  
M. Fuji ◽  
T. Watanabe ◽  
M. Chikazawa
Keyword(s):  
Phase Transition ◽  
Porous Silica ◽  
Hydroxyl Groups ◽  
Surface Hydroxyl ◽  
Surface Hydroxyl Groups ◽  
Effect Of Surface

Effect of surface hydroxyl groups on heat capacity of mesoporous silica

2018 ◽  
Vol 112 (20) ◽  
pp. 201903 ◽  
Author(s):  
Michal Marszewski ◽  
Danielle Butts ◽  
Esther Lan ◽  
Yan Yan ◽  
Sophia C. King ◽  
...  
Keyword(s):  
Heat Capacity ◽  
Mesoporous Silica ◽  
Hydroxyl Groups ◽  
Surface Hydroxyl ◽  
Surface Hydroxyl Groups ◽  
Effect Of Surface

Effect of activation temperature on acidity of alumina, silica-alumina and cobalt-molybdenum-alumina catalysts

1985 ◽  
Vol 50 (6) ◽  
pp. 1268-1273 ◽  
Author(s):  
Zdeněk Vít
Keyword(s):  
Acid Sites ◽  
Hydroxyl Groups ◽  
Activation Temperature ◽  
Cumene Cracking ◽  
Surface Hydroxyl ◽  
Catalytic Activities ◽  
Surface Hydroxyl Groups ◽  
Silica Alumina ◽  
Effect Of Surface ◽  
Alumina Catalysts

The effect of surface dehydration on the acidity of silica-alumina and cobalt-molybdenum-alumina catalysts has been studied and compared with alumina. The catalysts were characterized by surface hydroxyl groups concentrations, acid sites concentrations and by catalytic activities in paraldehyde depolymerisation and cumene cracking. It was found that the acidity of alumina and cobalt-molybdenum-alumina catalysts increases significantly with surface dehydration and attains maximum after activation at 500-550 °C. Silica-alumina is strongly acidic even in the hydrated state, the acidity being formed already at relatively low temperature around 100 °C.

The Effect of Surface Hydroxyl Groups on the Properties of SR/Al2O3 Composites

2009 ◽  
Vol 66 ◽  
pp. 277-279 ◽  
Author(s):  
Yuan Lu Xiong ◽  
Qiang Shen ◽  
Fei Chen ◽  
Jin Zheng ◽  
Lian Meng Zhang
Keyword(s):  
Heat Treatment ◽  
Flexural Strength ◽  
Relative Density ◽  
Heat Treatment Temperature ◽  
Treatment Temperature ◽  
Hydroxyl Groups ◽  
Surface Hydroxyl ◽  
Surface Hydroxyl Groups ◽  
Sandy Alumina ◽  
Effect Of Surface

SR/Al2O3 composites were fabricated from different heat treatment temperatures of alumina. The results show that the relative density is over 94% and flexural strength is 66.5MPa when silicone content is 33wt.%. The flexural strength of the obtained SR/Al2O3 composites is decreased when increasing the heat treatment temperature of sandy alumina, indicating that the surface hydroxyl groups directly influence the flexural strength of SR/Al2O3 composites.

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