Cation order and hydrogen bonding of high-pressure phases in the Al2O3-SiO2-H2O system: An NMR and Raman study

2006 ◽  
Vol 91 (5-6) ◽  
pp. 850-861 ◽  
Author(s):  
X. Xue
Keyword(s):  
High Pressure ◽  
Hydrogen Bonding ◽  
Cation Order ◽  
Raman Study

High Pressure Raman Study of the Hydrolysis Reaction of Tmos and Teos

1990 ◽  
Vol 180 ◽  
Author(s):  
G. Hoang ◽  
J. Watson ◽  
T. W. Zerda
Keyword(s):  
Raman Spectroscopy ◽  
Dielectric Constant ◽  
High Pressure ◽  
Hydrogen Bonding ◽  
Raman Band ◽  
Dipole Moments ◽  
Hydrolysis Reaction ◽  
Or Groups ◽  
Bonding Properties ◽  
Raman Study

ABSTRACTHigh pressure Raman spectroscopy is used to monitor the hydrolysis reaction of TMOS in solutions with methanol, acetonitrile, acetone, dioxane and formamide, and of TEOS as a function of pH and the catalyst used. The rate constants for various solvents, temperatures and pressures are experimentally determined from the time dependence of Raman band intensities. It is shown that the reaction is slow in dioxane and fast in methanol or formamide. The volume of activation is found from the pressure dependence of the rate constant. The volume of activation, the dielectric constant, dipole moments and hydrogen bonding properties and their role in the hydrolysis reaction are discussed. It is shown that solvents which can form hydrogen bonding with Si-OR groups can increase the rate of the reaction.

Hydrogen bonding in liquid methanol at ambient conditions and at high pressure

2000 ◽  
Vol 98 (3) ◽  
pp. 125-134 ◽  
Author(s):  
T. Weitkamp, J. Neuefeind, H. E. Fisch
Keyword(s):  
High Pressure ◽  
Hydrogen Bonding ◽  
Ambient Conditions

Sursassite: Hydrogen bonding, cation order, and pumpellyite intergrowth

2009 ◽  
Vol 94 (10) ◽  
pp. 1440-1449 ◽  
Author(s):  
M. Nagashima ◽  
M. Akasaka ◽  
T. Minakawa ◽  
E. Libowitzky ◽  
T. Armbruster
Keyword(s):  
Hydrogen Bonding ◽  
Cation Order

High-Pressure Raman Study of Liquid and Crystalline CH2F2up to 29 GPa

1994 ◽  
Vol 63 (3) ◽  
pp. 934-940 ◽  
Author(s):  
Wu Youhong ◽  
Mitsukazu Onomichi ◽  
Shigeo Sasaki ◽  
Hiroyasu Shimizu
Keyword(s):  
High Pressure ◽  
Raman Study

High-pressure Raman study on CeO2 nanospheres self-assembled by 5 nm CeO2 nanoparticles

2011 ◽  
Vol 248 (5) ◽  
pp. 1154-1157 ◽  
Author(s):  
Bo Liu ◽  
Bingbing Liu ◽  
Quanjun Li ◽  
Zepeng Li ◽  
Mingguang Yao ◽  
...  
Keyword(s):  
High Pressure ◽  
Ceo2 Nanoparticles ◽  
Raman Study ◽  
Self Assembled

High pressure photoluminescence and resonant Raman study of GaAs

1978 ◽  
Vol 25 (4) ◽  
pp. 209-211 ◽  
Author(s):  
Peter Y. Yu ◽  
Benjamin Welber
Keyword(s):  
High Pressure ◽  
Raman Study ◽  
Resonant Raman

Hydrogen bonding interactions in phase A [Mg 7 Si 2 O 8 (OH) 6 ] at ambient and high pressure

2000 ◽  
Vol 27 (4) ◽  
pp. 225-233 ◽  
Author(s):  
H. Kagi ◽  
J. B. Parise ◽  
H. Cho ◽  
G. R. Rossman ◽  
J. S. Loveday
Keyword(s):  
High Pressure ◽  
Hydrogen Bonding ◽  
Hydrogen Bonding Interactions
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