DOI: 10.1126/science.267.5196.369. The Structure of Confined Oxygen in Silica Xerogels

The Structure of Confined Oxygen in Silica Xerogels

10.1126/science.267.5196.369

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

The microscopic structure of oxygen confined in silica xerogels has been studied as a function of temperature. In large pores, a crystalline solid forms with a structure consistent with that of the bulk. The size of the crystallites is much larger than the pore size, indicating that cooperative effects among pores are important in freezing. As the pore size is decreased, a crossover occurs where solidification results in an amorphous phase in the pores. The resulting amorphous phase is solid but is less ordered than the liquid phase.

Bibliography

Schirato, B. S., Fang, M. P., Sokol, P. E., & Komarneni, S. (1995). The Structure of Confined Oxygen in Silica Xerogels. Science, 267(5196), 369â371.

Authors 4

B. S. Schirato (first)
M. P. Fang (additional)
P. E. Sokol (additional)
S. Komarneni (additional)

References 19 Referenced 40

AWSCHALOM, D.D., LIQUID-FILM INSTABILITIES IN CONFINED GEOMETRIES, PHYSICAL REVIEW LETTERS 57: 1607 (1986). (10.1103/PhysRevLett.57.1607) / PHYSICAL REVIEW LETTERS (1986)
COLLINS, M.F., MAGNETIC STRUCTURE OF SOLID OXYGEN, PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON 89: 415 (1966). (10.1088/0370-1328/89/2/323) / PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON (1966)
Egelstaff, P. A., Methods of Experimental Physics 23: 405 (1987). / Methods of Experimental Physics (1987)
Iler R. K. The Chemistry of Silica (1979).
JACKSON, C.L., RUBBER CHEM TECHNOL 64: 760 (1990). / RUBBER CHEM TECHNOL (1990)
JORDAN, T.H., SINGLE-CRYSTAL STUDIES OF BETA-F2 + OF GAMMA-O2, ACTA CRYSTALLOGRAPHICA 17: 777 (1964). (10.1107/S0365110X6400202X) / ACTA CRYSTALLOGRAPHICA (1964)
KENJI, S, METHODS EXPT PHYSI B 23: 243 (1987). (10.1016/S0076-695X(08)60572-4) / METHODS EXPT PHYSI B (1987)
Klafter J. Molecular Dynamics in Restricted Geometries (1989).
Klug H. P. X-ray Diffraction Procedures for Polycrystalline and Amorphous Materials (1974).
MA, W.J., A MOLECULAR-DYNAMICS STUDY OF FREEZING IN A CONFINED GEOMETRY, JOURNAL OF CHEMICAL PHYSICS 97: 485 (1992). (10.1063/1.463594) / JOURNAL OF CHEMICAL PHYSICS (1992)
MEIER, R.J., NEUTRON-DIFFRACTION STUDY OF ALPHA-OXYGEN AND BETA-OXYGEN, PHYSICAL REVIEW B 29: 1387 (1984). (10.1103/PhysRevB.29.1387) / PHYSICAL REVIEW B (1984)
MOLZ, E, FREEZING AND MELTING OF FLUIDS IN POROUS GLASSES, PHYSICAL REVIEW B 48: 5741 (1993). (10.1103/PhysRevB.48.5741) / PHYSICAL REVIEW B (1993)
PEDERSEN, K.S., THERMAL-NEUTRON DIFFRACTION FROM THE LIQUIDS N2 AND O2 - DETERMINATION OF NEAREST NEIGHBOR PARAMETERS AND ANGULAR-CORRELATIONS, JOURNAL OF CHEMICAL PHYSICS 70: 1051 (1979). (10.1063/1.437521) / JOURNAL OF CHEMICAL PHYSICS (1979)
RITTER, M.B., COLLECTIVE BEHAVIOR OF SUPERCOOLED LIQUIDS IN POROUS-MEDIA, PHYSICAL REVIEW LETTERS 61: 966 (1988). (10.1103/PhysRevLett.61.966) / PHYSICAL REVIEW LETTERS (1988)
SCHMATZ, W, METHODS EXPT PHYSI B 23: 85 (1987). (10.1016/S0076-695X(08)60569-4) / METHODS EXPT PHYSI B (1987)
SOKOL, P.E., FREEZING IN CONFINED GEOMETRIES, APPLIED PHYSICS LETTERS 61: 777 (1992). (10.1063/1.108461) / APPLIED PHYSICS LETTERS (1992)
STEWART, J.W., PHASE TRANSITIONS AND COMPRESSIONS OF SOLID CH4, CD4 AND O-2, JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 12: 122 (1959). / JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS (1959)
TORII, R.H., HEAT-CAPACITY AND TORSIONAL OSCILLATOR STUDIES OF MOLECULAR-HYDROGEN IN POROUS VYCOR GLASS, PHYSICAL REVIEW B 41: 7167 (1990). (10.1103/PhysRevB.41.7167) / PHYSICAL REVIEW B (1990)
WARNOCK, J, GEOMETRICAL SUPERCOOLING OF LIQUIDS IN POROUS-GLASS, PHYSICAL REVIEW LETTERS 57: 1753 (1986). (10.1103/PhysRevLett.57.1753) / PHYSICAL REVIEW LETTERS (1986)

Dates

Type	When
Created	18 years, 10 months ago (Oct. 27, 2006, 2:19 p.m.)
Deposited	1 year, 7 months ago (Jan. 12, 2024, 4:49 p.m.)
Indexed	1 month, 4 weeks ago (July 1, 2025, 9:07 a.m.)
Issued	30 years, 7 months ago (Jan. 20, 1995)
Published	30 years, 7 months ago (Jan. 20, 1995)
Published Print	30 years, 7 months ago (Jan. 20, 1995)

Funders 0

None

BibTeX

@article{Schirato_1995, title={The Structure of Confined Oxygen in Silica Xerogels}, volume={267}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.267.5196.369}, DOI={10.1126/science.267.5196.369}, number={5196}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Schirato, B. S. and Fang, M. P. and Sokol, P. E. and Komarneni, S.}, year={1995}, month=jan, pages={369–371} }

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