scholarly journals Fluorine incorporation into porous silica by gas phase doping with C_2F_6 in N_2

2013 ◽  
Vol 3 (11) ◽  
pp. 1839 ◽  
Author(s):  
Frank Froehlich ◽  
Claudia Aichele ◽  
Stephan Grimm ◽  
Kay Schuster
Keyword(s):  
Gas Phase ◽  
Porous Silica

SiO2 Entrapment of Animal Cells for Hybrid Bioartificial Organs

2000 ◽  
Vol 628 ◽  
Author(s):  
Giovanni Carturan ◽  
Renzo Dal Monte ◽  
Maurizio Muraca
Keyword(s):  
Gas Phase ◽  
Mechanical Stability ◽  
Porous Silica ◽  
Collagen Matrix ◽  
Homogeneous Layer ◽  
Animal Cells ◽  
Bioartificial Organs ◽  
Liver And Pancreas ◽  
Encapsulation Method ◽  
Metabolic Activities

ABSTRACTSi-alkoxides in gas phase are reactive towards the surface of animal cells, depositing a homogeneous layer of porous silica. This encapsulation method preserves cell viability and does not alter the hindrance of the biological load.In the prospective use for the design of a hybrid bioartificial liver, hepatocytes in a collagen matrix can be entrapped by the siliceous deposit which provides definite mechanical stability to the collagen matrix and molecular cutoff vs. high molecular weight proteins, including immunoglobulins. The functionality of the encapsulated cell load is maintained for the expressions of typical liver and pancreas metabolic activities.

Gas-Phase Deposition of Aminopropylalkoxysilanes on Porous Silica

Langmuir ◽  
2003 ◽  
Vol 19 (8) ◽  
pp. 3461-3471 ◽  
Author(s):  
Satu Ek ◽  
Eero I. Iiskola ◽  
Lauri Niinistö
Keyword(s):  
Gas Phase ◽  
Porous Silica ◽  
Gas Phase Deposition

scholarly journals The Effect of Thermal Treatment under Different Atmospheric Conditions on the Catalytic Performance of Nickel Supported on Porous Silica in the Gas-Phase Hydrogenation of Acetonitrile

2007 ◽  
Vol 25 (3-4) ◽  
pp. 185-198 ◽  
Author(s):  
Pilar Braos-García ◽  
Desireé Durán-Martín ◽  
Antonia Infantes-Molina ◽  
Dolores Eliche-Quesada ◽  
Enrique Rodríguez-Castellón ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Gas Phase ◽  
Porous Silica ◽  
Catalytic Performance ◽  
Atmospheric Conditions

Porous Silica Materials Derivatized with Cu and Ag Cations for Selective Propene−Propane Adsorption from the Gas Phase:  Aluminosilicate Ion-Exchanged Monoliths

2004 ◽  
Vol 16 (20) ◽  
pp. 3911-3918 ◽  
Author(s):  
M. Kargol ◽  
J. Zajac ◽  
D. J. Jones ◽  
Th. Steriotis ◽  
J. Rozière ◽  
...  
Keyword(s):  
Gas Phase ◽  
Porous Silica ◽  
Silica Materials

Ligand-Modified Rhodium Catalysts on Porous Silica in the Continuous Gas-Phase Hydroformylation of Short-Chain Alkenes-Catalytic Reaction in Liquid-Supported Aldol Products

ChemCatChem ◽  
2013 ◽  
Vol 5 (10) ◽  
pp. 2955-2963 ◽  
Author(s):  
Andreas Schönweiz ◽  
Jonas Debuschewitz ◽  
Simon Walter ◽  
René Wölfel ◽  
Hanna Hahn ◽  
...  
Keyword(s):  
Gas Phase ◽  
Catalytic Reaction ◽  
Porous Silica ◽  
Short Chain ◽  
Rhodium Catalysts

Residual Gas Reactions in the Electron Microscope: I. Qualitative Observations on the Water Gas Reaction

1968 ◽  
Vol 26 ◽  
pp. 292-293
Author(s):  
Richard E. Hartman ◽  
Roberta S. Hartman ◽  
Peter L. Ramos
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
Gas Phase ◽  
Absolute Temperature ◽  
Residual Gas ◽  
Gas Reactions ◽  
Image Position ◽  
The Right ◽  
Water Gas ◽  
Thinning Rate

The action of water and the electron beam on organic specimens in the electron microscope results in the removal of oxidizable material (primarily hydrogen and carbon) by reactions similar to the water gas reaction .which has the form:The energy required to force the reaction to the right is supplied by the interaction of the electron beam with the specimen.The mass of water striking the specimen is given by:where u = gH2O/cm2 sec, PH2O = partial pressure of water in Torr, & T = absolute temperature of the gas phase. If it is assumed that mass is removed from the specimen by a reaction approximated by (1) and that the specimen is uniformly thinned by the reaction, then the thinning rate in A/ min iswhere x = thickness of the specimen in A, t = time in minutes, & E = efficiency (the fraction of the water striking the specimen which reacts with it).

Integration of Core-Edge Spectroscopy Methods for the Study of Polymers

1996 ◽  
Vol 54 ◽  
pp. 154-155
Author(s):  
E. G. Rightor
Keyword(s):  
Excited State ◽  
Polymer Blends ◽  
Gas Phase ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Electronic States ◽  
Core Electron ◽  
Bulk Solids ◽  
Development Application

Core edge spectroscopy methods are versatile tools for investigating a wide variety of materials. They can be used to probe the electronic states of materials in bulk solids, on surfaces, or in the gas phase. This family of methods involves promoting an inner shell (core) electron to an excited state and recording either the primary excitation or secondary decay of the excited state. The techniques are complimentary and have different strengths and limitations for studying challenging aspects of materials. The need to identify components in polymers or polymer blends at high spatial resolution has driven development, application, and integration of results from several of these methods.

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