Improvement of hydrothermal stability of mesoporous silica using salts: reinvestigation for time-dependent effects
Article Abstract:
Research was conducted to reexamine the salt effect to solve the problem of poor reproducibility. The synthesis of mesoporous silica molecular sieves was obtained in the presence of salts under different experimental conditions. A hydrothermal stability test in boiling water, X-ray diffraction, infrared spectroscopy and scanning electron microscopy were used to analyze the hydrothermal stability and structure of the silica materials. It was found that the time dependence was a very important factor for the improvement of the hydrothermal stability.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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Theoretical and experimental investigation of morphology and temperature effects on adsorption of organic vapors in single-walled carbon nanotubes
Article Abstract:
Hexane adsorption mechanism and capacity of organic molecules on single-walled carbon nanotube (SWNT) bundles are investigated by molecular simulation. Hexane is selected as a model organic adsorbate and to determine its adsorption on localized sites on SWNT bundles, a series of configurational-bias grand canonical Monte Carlo simulations are performed, whose results are directly compared with adsorption measurements at various temperature.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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Anionic and upper-excited fluorescence of C(sub 60) encapsulated in Y zeolitic nanocavity
Article Abstract:
C(sub 60) inserted into a Y zeolitic nanocavity indicates anomalous upper-excited fluorescence as well as anionic and normal fluorescence. By measuring its ESR spectrum, the formation of (super .)C(sub 60)(super -) is identified, while the intercalation of C(sub 60) into the supercage of the zeolite is confirmed by measuring (super 129)Xe NMR spectra.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2001
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- Abstracts: Postsynthesis hydrothermal restructuring of M41S mesoporous molecular sieves in water. Comment on "(sub 27)Al multiple-quantum magic angle spinning NMR study of the thermal transformation between microporous aluminum
- Abstracts: Luminescence enhancement of Tb(super 3+) ion in assemblies of amphiphilic linear-dendritic block copolymers: Antenna and microenvironment effects