On the hydrothermal stability of mesoporous aluminosilicate MCM-48 materials
Article Abstract:
Aluminosilicate MCM-48 materials with Si/A1 ratio between 4 and 50 are prepared through direct mixed-gel synthesis, and their hydrothermal stability in boiling water and steam is investigated using a variety of techniques including powder XRD, N2 sorption studies, and element analysis. The findings show that it is possible to prepare A1-MCM-48 materials with good structure ordering and hydrothermal stability by careful choice of the A1 content.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
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High-resolution multinuclear NMR structural study of binary aluminosilicate and other related glasses
Article Abstract:
The short-range atomic structure of homogeneous binary SiO2-Al2O3 glasses with 0.4 to up to 12.0 wt per cent Al2O3 are studied using high resolution (super 27)Al, (super 29)Si, and (super 17)O NMR spectroscopic techniques. The high-resolution (super 27)Al NMR results on phase-separated glasses with Al2O3 contents ranging between 20 and 40 wt percent are reported.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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Association properties of diblock copolymers of ethylene oxide and 1,2-butylene oxide in aqueous solution. Copolymers with oxyethylene-block lengths in the range 100-400 chain units
Article Abstract:
It has been possible to obtain micelle properties and sol-gel curves for four oxyethylene/oxybutylene diblock copolymers: E96B18, E184B18, E315B17 and E398B19. At room temperature, hard gels were formed in the concentration range 3.5 wt % to 8 wt % copolymer depending on E-block length.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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