Active Ti Species in TiCl3-Doped NaAlH4. Mechanism for Catalyst Deactivation
β Scribed by Balde, C.P.; Stil, H.A.; vanderEerden, A.M.J.; deJong, K.P.; Bitter, J.H.
- Book ID
- 127377788
- Publisher
- American Chemical Society
- Year
- 2007
- Tongue
- English
- Weight
- 142 KB
- Volume
- 111
- Category
- Article
- ISSN
- 1932-7447
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
In order to understand the final state of the TiCl 3 dopant during the dehydrogenation and rehydrogenation cycles of NaAlH 4 , we determined the reaction stoichiometry between TiCl 3 and NaAlH 4 by measuring the amount of hydrogen evolution from NaAlH 4 with the varying TiCl 3 -load. We found that:
TiCl 3 acts as an efficient catalyst for NaAlH 4 (sodium alanate), altering its hydrogen sorption kinetics and reversibility considerably. In order to clarify its role, we performed in situ neutron diffraction experiments on protonated catalysed and uncatalysed NaAlH 4 . The phase transformations we
## Abstract The effect of varying ^14^CO contact time upon the concentration of active centres __C__\* in ethylene homopolymerization using the TiCl~4~/MgH~2~ Β· Al(C~2~H~5~)~3~ catalytic system shows that the polymer radioactivity, and hence __C__\*, increase sharply in the first sixty minutes of ^