scholarly journals Sol-Gel derived Silica Membranes: Control of Silica Network Size and Hydrothermal Stability

MEMBRANE ◽  
2011 ◽  
Vol 36 (3) ◽  
pp. 97-103 ◽  
Author(s):  
Masakoto Kanezashi
Keyword(s):  
Sol Gel ◽  
Network Size ◽  
Hydrothermal Stability ◽  
Silica Network ◽  
Silica Membranes

scholarly journals Organic–Inorganic Hybrid Silica Membranes with Controlled Silica Network Size for Propylene/Propane Separation

2011 ◽  
Vol 51 (2) ◽  
pp. 944-953 ◽  
Author(s):  
Masakoto Kanezashi ◽  
Mitsuki Kawano ◽  
Tomohisa Yoshioka ◽  
Toshinori Tsuru
Keyword(s):  
Network Size ◽  
Silica Network ◽  
Inorganic Hybrid ◽  
Silica Membranes ◽  
Hybrid Silica

Hydrogen Permeation Performance and Hydrothermal Stability for Sol–gel Derived Pd-doped Silica Membranes

2010 ◽  
Vol 36 (5) ◽  
pp. 472-479 ◽  
Author(s):  
Masakoto Kanezashi ◽  
Chie Shimada ◽  
Mitsunori Sano ◽  
Tomohisa Yoshioka ◽  
Toshinori Tsuru
Keyword(s):  
Hydrogen Permeation ◽  
Sol Gel ◽  
Hydrothermal Stability ◽  
Silica Membranes

Influence of sol–gel conditioning on the cobalt phase and the hydrothermal stability of cobalt oxide silica membranes

2015 ◽  
Vol 475 ◽  
pp. 425-432 ◽  
Author(s):  
Liang Liu ◽  
David K. Wang ◽  
Dana. L. Martens ◽  
Simon Smart ◽  
João C. Diniz da Costa
Keyword(s):  
Cobalt Oxide ◽  
Sol Gel ◽  
Hydrothermal Stability ◽  
Silica Membranes

Influence of the intermediate layer on the hydrothermal stability of sol-gel derived hybrid silica membranes

2017 ◽  
Vol 37 (10) ◽  
pp. 3435-3441 ◽  
Author(s):  
Marcel ten Hove ◽  
Mieke W.J. Luiten-Olieman ◽  
Cindy Huiskes ◽  
Arian Nijmeijer ◽  
Louis Winnubst
Keyword(s):  
Intermediate Layer ◽  
Sol Gel ◽  
Hydrothermal Stability ◽  
Silica Membranes ◽  
Hybrid Silica

scholarly journals Surfactant-Assisted Fabrication of Alumina-Doped Amorphous Silica Nanofiltration Membranes with Enhanced Water Purification Performances

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1368 ◽  
Author(s):  
Xianzheng Ma ◽  
Katarzyna Janowska ◽  
Vittorio Boffa ◽  
Debora Fabbri ◽  
Giuliana Magnacca ◽  
...  
Keyword(s):  
Sol Gel ◽  
Rejection Rate ◽  
High Water ◽  
Aluminum Isopropoxide ◽  
Nanofiltration Membranes ◽  
Silica Network ◽  
Synthesis Conditions ◽  
Silica Membranes ◽  
Membrane Performance ◽  
High Rejection

Surfactant-templated 5 mol% Al2O3-doped silica membranes nanofiltration membranes were synthesized via the sol-gel method, and afterward, were optimized, and tested with respect to the permeability and rejection rate. The disordered silica network was stabilized by doping 5 mol% alumina. Tetraethyl orthosilicate and aluminum isopropoxide were used as the silica and alumina precursors, respectively. Cetyltrimethylammonium bromide (CTAB) was used not only as a pore-forming agent, but also to control the reaction rate of the aluminum isopropoxide, thus obtaining highly homogeneous materials. The results about filtration of model solutions showed that the optimized membranes are featured by both a relatively high water permeability (1.1–2.3 L·m−2·h−1 ·bar−1) and a high rejection for salts (74% for NaCl, and >95% for MgSO4 and Na2SO4) and organic pollutants (e.g., about 98% for caffeine). High rejection of divalent ions and organic molecules was also observed when a real wastewater effluent was filtered. The influence of the synthesis conditions on the membrane performance is discussed.

Hydrogen Permeation Properties and Hydrothermal Stability of Sol-Gel-Derived Amorphous Silica Membranes Fabricated at High Temperatures

2013 ◽  
Vol 96 (9) ◽  
pp. 2950-2957 ◽  
Author(s):  
Masakoto Kanezashi ◽  
Takanori Sasaki ◽  
Hiromasa Tawarayama ◽  
Tomohisa Yoshioka ◽  
Toshinori Tsuru
Keyword(s):  
High Temperatures ◽  
Amorphous Silica ◽  
Hydrogen Permeation ◽  
Sol Gel ◽  
Hydrothermal Stability ◽  
Silica Membranes ◽  
Permeation Properties

Hydrothermal stability of cobalt silica membranes in a water gas shift membrane reactor

2009 ◽  
Vol 66 (2) ◽  
pp. 299-305 ◽  
Author(s):  
Scott Battersby ◽  
Simon Smart ◽  
Bradley Ladewig ◽  
Shaomin Liu ◽  
Mikel C. Duke ◽  
...  
Keyword(s):  
Membrane Reactor ◽  
Hydrothermal Stability ◽  
Water Gas Shift ◽  
Silica Membranes ◽  
Water Gas

Development of temporal spectroscopic properties for Xerogel matrices doped with Rhodamine 6G dye

Open Physics ◽  
2006 ◽  
Vol 4 (3) ◽  
Author(s):  
Abbas Al-Wattar ◽  
Baha Chiad ◽  
Wesam Twej ◽  
Sarmed Al-Awadi
Keyword(s):  
Fluorescence Spectra ◽  
Rhodamine 6G ◽  
Sol Gel ◽  
Blue Shift ◽  
Spectroscopic Properties ◽  
Dye Molecules ◽  
Absorption And Fluorescence Spectra ◽  
Silica Network ◽  
Sol Gel Process ◽  
Two Parameters

AbstractThe solid host of a laser dye modifies its spectroscopic properties with respect to its liquid host. During the Sol-Gel process the dye molecules suffer from changing their environment. Two parameters affect this matter, the change in the concentration due to the evaporation of the solvent (drying) and the caging of dye molecules inside the pores or attachment to the silica network. Rhodamine 6G absorption and fluorescence spectra with different concentrations, during Sol-Gel time processing, have been studied. Both, absorption and fluorescence spectra of the dye in the solid host, for different concentrations, show a blue-shift relative to its liquid phase.

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