Photochemistry of Group 6B hexacarbonyls adsorbed onto porous Vycor glass. Evidence for the formation of methane from carbon species in the glass

1988 ◽  
Vol 27 (15) ◽  
pp. 2733-2742 ◽  
Author(s):  
Robert C. Simon ◽  
Edgar A. Mendoza ◽  
Harry D. Gafney
Keyword(s):  
Vycor Glass ◽  
Carbon Species ◽  
Porous Vycor Glass

ChemInform Abstract: THE PHOTOSENSITIZED ISOMERIZATION OF 2-BUTENES BY SENSITIZERS ADSORBED ON POROUS VYCOR GLASS

1974 ◽  
Vol 5 (49) ◽  
pp. no-no
Author(s):  
KIYOSHI OTSUKA ◽  
AKIRA MORIKAWA
Keyword(s):  
Vycor Glass ◽  
Porous Vycor Glass

scholarly journals Thermal properties of metal-metal bonded Pd(I) complexes supported onto porous Vycor glass

2008 ◽  
Vol 80 (2) ◽  
pp. 263-269
Author(s):  
Iara F. Gimenez ◽  
Oswaldo L. Alves
Keyword(s):  
Solid State ◽  
Thermal Stabilization ◽  
Decomposition Products ◽  
Vycor Glass ◽  
X Ray ◽  
Porous Vycor Glass ◽  
Metal Metal ◽  
Condensed Phosphates ◽  
Diffuse Reflectance Infrared ◽  
Immobilized Complexes

Thermal behavior of the complexes Pd2(dppm)2Cl2, Pd2(dppm)2(SnCl3)Cl and Pd2(dppm)2(SnCl3)2 (dppm = bis[diphenylphosphino(methane)], ((C6H5)2PCH2P(C6H5)2) in the solid state and immobilized onto porous Vycor glass was studied. Similar decomposition mechanisms were observed for the solid and immobilized complexes, with a small thermal stabilization upon immobilization. The decomposition products were characterized by X-ray diffractometry, Raman and diffuse reflectance infrared spectroscopy, which indicated the presence of a mixture of metallic palladium and oxidized species such as PdO,condensed phosphates, SnO2 and SnP2O7. According to X-ray diffractometry, the decomposition products of the immobilized complexes presented higher amounts of PdO than the solid-state residues, probably as an effect of interactions with silanol groups present in the glass surface.

scholarly journals Isomerization ofcis-2-Butene Caused by Electronically-excited Sulfur Dioxide (3B1) Adsorbed on Porous Vycor Glass

1978 ◽  
Vol 51 (2) ◽  
pp. 367-371 ◽  
Author(s):  
Kiyoshi Otsuka ◽  
Masaki Fukaya ◽  
Akira Morikawa
Keyword(s):  
Sulfur Dioxide ◽  
Vycor Glass ◽  
Porous Vycor Glass ◽  
Electronically Excited

Freezing of molecular hydrogen and its isotopes in porous vycor glass

1996 ◽  
Vol 105 (1-2) ◽  
pp. 113-131 ◽  
Author(s):  
G. Beaudoin ◽  
P. Haljan ◽  
M. Paetkau ◽  
J. R. Beamish
Keyword(s):  
Molecular Hydrogen ◽  
Vycor Glass ◽  
Porous Vycor Glass

Heat capacity and torsional oscillator studies of molecular hydrogen in porous Vycor glass

1990 ◽  
Vol 41 (10) ◽  
pp. 7167-7181 ◽  
Author(s):  
R. H. Torii ◽  
H. J. Maris ◽  
G. M. Seidel
Keyword(s):  
Heat Capacity ◽  
Molecular Hydrogen ◽  
Torsional Oscillator ◽  
Vycor Glass ◽  
Porous Vycor Glass

Thermoelectric power of a network of 6-nm Bi nanowires in a porous Vycor glass matrix

2004 ◽  
Author(s):  
T.E. Huber ◽  
K. Celestine ◽  
A. Nikolaeva ◽  
A. Gitsu ◽  
D. Konopko ◽  
...  
Keyword(s):  
Thermoelectric Power ◽  
Glass Matrix ◽  
Vycor Glass ◽  
Porous Vycor Glass

PHASE TRANSITIONS OF WATER AND XENON ADSORBED IN POROUS VYCOR GLASS

1963 ◽  
Vol 41 (12) ◽  
pp. 3095-3107 ◽  
Author(s):  
G. Litvan ◽  
R. McIntosh
Keyword(s):  
Phase Transition ◽  
Capillary Condensation ◽  
Adsorbed Water ◽  
Surface Concentration ◽  
Adsorptive Capacity ◽  
Temperature Cycle ◽  
Length Variation ◽  
Vycor Glass ◽  
Porous Vycor Glass ◽  
Lower Temperature

Measurements of the expansion of porous Vycor glass containing fixed quantities of adsorbed water indicate that in every instance a phase transition starts below −50 °C, with the main change occurring below −160 °C. Two other anomalies of the length variation were observed near −22 °C and −7 °C when the amount of adsorbed water exceeded the value equivalent to two monolayers. The length of the adsorbent after completion of a temperature cycle was different from the initial length. This is thought to be due to damage suffered by the glass and to the fact that the length of the adsorbent is different for adsorption and desorption although the quantity adsorbed may be the same.The phase transition of adsorbed xenon takes place below the normal triple point and is a function of surface concentration as shown by length variations and equilibrium pressures for fixed quantities adsorbed. All transitions are gradual and hysteresis is exhibited by the isosteres. The adsorption isotherms for xenon – Vycor glass show a decreasing adsorptive capacity and a contraction of the hysteresis loop with lower temperature. The inadequacy of the capillary condensation theory of adsorption in relation to these results is discussed.

Temperature-dependent adsorption of nitrogen on porous vycor glass

1998 ◽  
Vol 57 (9) ◽  
pp. 4991-4994 ◽  
Author(s):  
Tito E. Huber ◽  
Hsi Lung Tsou
Keyword(s):  
Temperature Dependent ◽  
Vycor Glass ◽  
Porous Vycor Glass ◽  
Adsorption Of Nitrogen
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