Role of silanol groups in dispersing Mo(VI) on silica

1992 ◽  
Vol 16 (1-2) ◽  
pp. 71-76 ◽  
Author(s):  
R. D. Roark ◽  
S. D. Kohler ◽  
J. G. Ekerdt
Keyword(s):  
Silanol Groups

scholarly journals A role of free silanol groups of nanosilica surface in interaction with poly(vinyl pyrrolidone)

2018 ◽  
Vol 72 (2) ◽  
pp. 51 ◽  
Author(s):  
Olga Voronina ◽  
Maria Malysheva ◽  
Liudmyla Nosach ◽  
Eugeny Voronin ◽  
Vladimir Gun’ko ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Crucial Role ◽  
Vinyl Pyrrolidone ◽  
Initial Amount ◽  
Silanol Groups ◽  
Adsorption Monolayer ◽  
Poly Vinyl Pyrrolidone

In this work, a role of the number of free silanol groups at a nanosilica surface (specific surface area S<sub>BET</sub> = 250 m<sup>2</sup>/g, initial amount of silanols α<sub>ОН</sub> = 0.60-0.62 mmol/g) was analyzed in interaction with poly(vinyl pyrrolidone) (PVP) vs. the degree (Q<sub>TMS</sub>) of silica hydrophobization by hexamethyldisilazane at 100 <sup>o</sup>C. The value of Q<sub>TMS</sub> was 0.07, 0.42, 0.67, 0.81, 0.82, and 1.0. Adsorption of PVP onto a nanosilica surface was carried out from a water and water-ethanol (1:1) solutions of the polymer. It was shown that free silanol groups play a crucial role in the adsorption of poly(vinyl pyrrolidone). The value of the maximal adsorption (monolayer capacity) on completely hydrophobic nanosilica surface is approximately by 6.5 times lower than that for unmodified nanosilica

Role of silanol groups on silica gel on adsorption of benzothiophene and naphthalene

Fuel ◽  
2018 ◽  
Vol 215 ◽  
pp. 463-467 ◽  
Author(s):  
Junpei Fujiki ◽  
Katsunori Yogo ◽  
Eiji Furuya
Keyword(s):  
Silica Gel ◽  
Silanol Groups

ChemInform Abstract: ROLE OF SILANOL GROUPS IN FORMATION OF SUPPORTED CHROMOCENE CATALYSTS

1980 ◽  
Vol 11 (4) ◽  
Author(s):  
F. J. KAROL ◽  
C. WU ◽  
W. T. REICHLE ◽  
N. J. MARASCHIN
Keyword(s):  
Silanol Groups

Dual Role of Silanol Groups in Cyclopropanation and Hiyama−Denmark Cross-Coupling Reactions

2010 ◽  
Vol 12 (6) ◽  
pp. 1348-1351 ◽  
Author(s):  
Louis-Philippe B. Beaulieu ◽  
Lukas B. Delvos ◽  
André B. Charette
Keyword(s):  
Cross Coupling ◽  
Dual Role ◽  
Coupling Reactions ◽  
Silanol Groups ◽  
Cross Coupling Reactions

Enhanced propene/ethene selectivity for methanol conversion over pure silica zeolite: Role of hydrogen-bonded silanol groups

2015 ◽  
Vol 61 ◽  
pp. 67-71 ◽  
Author(s):  
Xiaojing Meng ◽  
Qingjun Yu ◽  
Yanan Gao ◽  
Qiang Zhang ◽  
Chunyi Li ◽  
...  
Keyword(s):  
Methanol Conversion ◽  
Silanol Groups ◽  
Pure Silica ◽  
Hydrogen Bonded
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