High-temperature heterogeneous equilibria in the unit activity approximation: ii. titanium tetrachloride—hydrogen system

1974 ◽  
Vol 5 (11) ◽  
pp. 2473-2474 ◽  
Author(s):  
D. H. Yean ◽  
J. R. Riter
Keyword(s):  
High Temperature ◽  
Unit Activity ◽  
Titanium Tetrachloride ◽  
Hydrogen System

Influence of the Ti precursor on the properties of Ti–pillared smectites

Clay Minerals ◽  
2001 ◽  
Vol 36 (1) ◽  
pp. 125-138 ◽  
Author(s):  
M. A. Vicente ◽  
M. A. Bañares-Muñoz ◽  
R. Toranzo ◽  
L. M. Gandía ◽  
A. Gil
Keyword(s):  
Acetic Acid ◽  
High Temperature ◽  
Titanium Tetrachloride ◽  
High Specific Surface Area ◽  
Complete Characterization ◽  
Low Ph ◽  
Titanium Tetraisopropoxide ◽  
Acid Attack ◽  
Octahedral Sheet

AbstractThe pillaring of smectites (two saponites and a montmorillonite) with various Ti precursors was studied. The minerals were intercalated with ‘classical ’ Ti precursors, such as titanium tetrachloride and titanium tetraethoxide, and also with new precursors, such as solutions of titanium tetraisopropoxide in acetic acid, or titanium (bis (ethylacetoacetato) diisopropoxide) in acetone. A complete characterization of the intercalated solids was carried out and a comparison of the properties of the solids as a function of the precursors used in the intercalation established. The influence of the severe conditions in which the intercalation with Ti oligomers is usually carried out (low pH and/or high temperature) on the properties of the intercalated solids was analysed. Intercalation with TiCl4 and Ti(EtO)4 strongly affected the structure of the clays, not by acid attack on the octahedral sheet, but mainly by disaggregation of particles. Ti(isop)4 was found to be less aggressive for the clays, while Ti(etacet)2(isop)2 did not form pillared solids but organo-clays, and therefore was of no use as a pillaring agent. The solids were thermally stable up to 300°C, showing a high specific surface area.

scholarly journals Integrated High Temperature Coal-to-Hydrogen System with CO2 Separation

2007 ◽  
Author(s):  
James A. Ruud ◽  
Anthony Ku ◽  
Vidya Ramaswamy ◽  
Wei Wei ◽  
Patrick Willson
Keyword(s):  
High Temperature ◽  
Co2 Separation ◽  
Hydrogen System

Explanation of the high-temperature relaxation anomaly in a metal-hydrogen system

1994 ◽  
Vol 49 (17) ◽  
pp. 11773-11782 ◽  
Author(s):  
David B. Baker ◽  
Mark S. Conradi ◽  
R. E. Norberg ◽  
R. G. Barnes ◽  
D. R. Torgeson
Keyword(s):  
High Temperature ◽  
Hydrogen System ◽  
Temperature Relaxation
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