SUPERFLUID MASS IN VERY THIN OF FILM HELIUM ADSORBED ON VYCOR GLASS

Neutron diffraction experiments on small particles of lead in the pores of Vycor glass are described. The small particles have a coherence length of (107 ± 20) Å; there is only a slight increase in the lattice parameter as compared with bulk lead, but an analysis of the intensity of the diffraction peaks reveals that there is an increase in the average amplitude of vibration of 28%. At least 80% of the lead in the glass is present in the crystalline state and contributes to the coherent diffraction.

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Phase behaviour near the triple point of carbon dioxide confined in mesoporous VYCOR glass

Journal of Radioanalytical and Nuclear Chemistry ◽

10.1007/bf02036270 ◽

1996 ◽

Vol 211 (1) ◽

pp. 173-179 ◽

Cited By ~ 2

Author(s):

J. A. Duffy ◽

H. M. Fretwell ◽

A. P. Clarke ◽

S. B. Dugdale ◽

M. A. Alam

Keyword(s):

Carbon Dioxide ◽

Triple Point ◽

Phase Behaviour ◽

Vycor Glass

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

Chemischer Informationsdienst ◽

10.1002/chin.197449131 ◽

1974 ◽

Vol 5 (49) ◽

pp. no-no

Author(s):

KIYOSHI OTSUKA ◽

AKIRA MORIKAWA

Keyword(s):

Vycor Glass ◽

Porous Vycor Glass

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

Anais da Academia Brasileira de Ciências ◽

10.1590/s0001-37652008000200004 ◽

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.

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