scholarly journals Characterization of Dry-Air Aged Granules of Silver-Functionalized Silica Aerogel

2012 ◽  
Author(s):  
Josef Matyas ◽  
Glen E. Fryxell ◽  
Matthew J. Robinson
Keyword(s):  
Silica Aerogel ◽  
Functionalized Silica ◽  
Dry Air

scholarly journals Adsorption of Methyl Iodide on Reduced Silver‐Functionalized Silica Aerogel: Kinetics and Modeling

AIChE Journal ◽  
2020 ◽  
Author(s):  
Siqi Tang ◽  
Seungrag Choi ◽  
Yue Nan ◽  
Lawrence L. Tavlarides
Keyword(s):  
Methyl Iodide ◽  
Silica Aerogel ◽  
Functionalized Silica

Optical Characterization of Silica Aerogel

1988 ◽  
Vol 121 ◽  
Author(s):  
Lawrence W. Hrubesh ◽  
Cynthia T. Alviso
Keyword(s):  
Silica Aerogel ◽  
Porous Silica ◽  
Optical Characterization ◽  
Optical Methods ◽  
Gradient Index ◽  
Two Dimensional ◽  
Two Dimensional Image ◽  
The Third ◽  
Third Dimension

ABSTRACTTwo optical methods are described for mapping the local variations of refractive index within monoliths of porous silica aerogel. One is an interferometrie measurement that produces “iso-index” fringes in a two dimensional image; an orthogonal view gives the third dimension information. The other method uses the deflection of a He-Ne laser beam to map the gradient index within a sample. The quantification of the measurements is described and the accuracy of the results is discussed.

scholarly journals Methyl Iodide Adsorption on Reduced Silver-Functionalized Silica Aerogel: How Temperature Impacts the Adsorption?

2021 ◽  
Author(s):  
Siqi Tang ◽  
Seungrag Choi ◽  
Lawrence Tavlarides
Keyword(s):  
Methyl Iodide ◽  
Photoelectron Spectroscopy ◽  
Silica Aerogel ◽  
Reaction Rate ◽  
Reaction Pathway ◽  
Effect Of Temperature ◽  
Functionalized Silica ◽  
Contributing Factors ◽  
X Ray ◽  
Temperature Impacts

To understand the effect of temperature to the adsorption, 104 ppbv and 1044 ppbv methyl iodide (CHI) adsorptions on reduced silver-functionalized silica aerogel (Ag-Aerogel) at 100, 150 and 200 ℃ were performed. In the experiments, a significantly high uptake rate (3 – 4 times higher than that at 100 and 150 ℃) was observed for the 104 ppbv adsorption at 200 ℃. To explain such behavior, a potential reaction pathway was proposed and multiple physical analyses including nitrogen titration, x-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) were performed. Based on the results, the contributing factors appear to be the formation of different Ag-I components induced by temperature, higher silver site availability, decreasing diffusion limitation, and increasing reaction rate described by the Arrhenius relationship.

Optical and visual experimental characterization of a glazing system with monolithic silica aerogel

Solar Energy ◽  
2019 ◽  
Vol 183 ◽  
pp. 30-39 ◽  
Author(s):  
Michele Zinzi ◽  
Giuseppe Rossi ◽  
Ann M. Anderson ◽  
Mary K. Carroll ◽  
Elisa Moretti ◽  
...  
Keyword(s):  
Silica Aerogel ◽  
Experimental Characterization ◽  
Monolithic Silica
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