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Recent News and Articles on the Keywords: give give + hydride hydrides + autocatalytic  Related to the article below (Last Update: 5/13/2008)

Give council?s partnership proposal a chance
ic Wales, United Kingdom -
COUNCILLOR Des Hillman has called for the people of Blaenau Gwent to ?give them a chance? as he announces plans for a new ?Partnership Group? to take over ...

eFluxMedia
Analysts, investors give thumbs-up to latest BlackBerry
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guardian.co.uk
Give supper a miss
guardian.co.uk, UK - 23 minutes ago
Tim Hayward wants to rid the English language of a word so insidious and revolting he can barely bring himself to say it - do you agree it should go? ...
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By Shigeru Sato and Tomoko Yamazaki May 13 (Bloomberg) -- Japan will issue a final order to Children's Investment Fund Management (UK) LLP to drop a bid to ...
Uganda: Kibaale Cao Asked to Probe Land Give-Away
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THE Kibaale chief administrative officer, Dustan Balaba, has been asked to investigate the alleged illegal land allocations in Kakumiro demonstration farm ...
Give Langata some spruce up for missing the lakeside feast
Daily Nation, Kenya -
By Macharia Gaitho I DON?T KNOW WHEN THIS ?homecoming? business entered Kenya political culture. I don?t recall seeing much of such events before 2003. ...
Diageo drops plan to sell Guinness birthplace, to give it e650m ...
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DUBLIN: For two-and-a-half centuries St James? Gate has been the home of Guinness. Diageo, the famed Irish stout?s British-based parent company and the ...DEO

Metro
We won't give Chelsea anything, insists Evra
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?Give us power, we will give you votes?
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KOLKATA, May 12: Improve the power situation or we won't vote for you. This is what people living in the semi-urban panchayat areas of Hooghly district have ...
Bears give Robbie Gould 5-year extension
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The Bears signed kicker Robbie Gould to a five-year contract extension on Monday, running through the 2013 season. Gould is the Bears' all-time field goal ...
Source: Google News

Autocatalytic Mechanism for. sigma.-Bond Metathesis Reactions of (. eta. 5-C5Me5) 2SmCH (SiMe3) 2 … -
NS Radu, TD Tilley - Journal of the American Chemical Society, 1995 - pubs.acs.org
... not play an important role in the autocatalytic reaction of ... 1. The above results
suggest that hydride 3 and ... a four-center transition state to give the observed ...

… 5-cyclopentadienyl)(triphenylphosphine) dimethylcobalt (III). An autocatalytic mechanism involving a … -
AH Janowicz, RG Bergman - Journal of the American Chemical Society, 1981 - pubs.acs.org
... We find that even though no metal hydrides are added ... is coordinatively unsaturated,
whereas the hydride is saturated ... species so produced, would give an inverse ...

Characteristics of rheniecene hydride in hydrogenation reactions
MA Ryashentseva, KM Minachev, BM Bulychev, VM … - Russian Chemical Bulletin, 1988 - Springer
... of the high sensitivity of the hydrides studied to ... which competitively protonate
(I) and give adducts having the ... complexes based on rhenie- cene hydride in the ...
-

[CITATION] Reductions by lithium aluminum hydride
WG Brown - Organic Reactions, 1942 - Wiley-Interscience

Reduction of carbon monoxide by binuclear tantalum hydride complexes -
PA Belmonte, FGN Cloke, RR Schrock - Journal of the American Chemical Society, 1983 - pubs.acs.org
... atm) to give yellow, crystalline Ta,Cp?,Cl,(H)(CHO ... 1)). An alkyl derivative of the
formyl hydride complex, Ta2Cp ... with PMe, and Evi- dence That Hydrides Do Not ...

… vapor deposition of aluminum films using triisobutylaluminum:. beta.-hydride and. beta.-alkyl … -
BE Bent, RG Nuzzo, LH Dubois - Journal of the American Chemical Society, 1989 - pubs.acs.org
... the first (3-hydride elimination step, yielding diisobutylaluminum hydride (DIBAH),
occurs ... that the exhaustive thermolysis ex- hibits autocatalytic behavior in ...

Copper hydride formation in the electroless copper plating process: in situ X-ray diffraction … -
A Va?kelis, R Ju?k? nas, J Jaciauskien? - Electrochimica Acta, 1998 - Elsevier
... and cathodic (Cu II reduction) reactions should give rise to ... The data on copper hydride,
CuH, formation and ... the existence of two routes of autocatalytic Cu II ...

… of the" mixed hydride"(aluminum hydride-d3 and aluminum dichloride hydride) reduction of optically …
RL Elsenbaumer, HS Mosher, JD Morrison, JE … - The Journal of Organic Chemistry, 1981 - pubs.acs.org
... Reduction with the more Lewis acidic reagent, A1ClZD, proceeds with a 1,2 hydride
shift, followed by reduction of the intermediate phenylacetaldehyde to give ...

[PDF] … Compound (v6-C5Me4CH2)($-C5Me5) Ti and RH, Catalyzed by Permethyltitanocene Hydride,(rs-CSMe5) zTiH
GA Luinstra, JH Teuben - J. Am. Chem. Soc, 1992 - stratingh.eldoc.ub.rug.nl
... ( v6-C5Me4CH2)( $-C5Me5)Ti and RH, Catalyzed by Permethyltitanocene Hydride, (
rs-CSMe5)zTiH Gerrit A. Luinstra and Jan H. Teuben* ... to give Cp*FvTi, ...
-

Autocatalytic Decomposition of A ?-Tosyloxy-Ketone Acetal as an Acid Amplifier -
K Kudo, K Arimitsu, K Ichimura - Molecular Crystals and Liquid Crystals, 1996 - informaworld.com
... tosyloxyethyl)acetoacetate (1) undergoes the autocatalytic fragmentation to ... in a
literature to give ethyl 3 ... a suspension of lithium aluminum hydride (LAH) (4.94 ...

Source: Google Scholar

Hydrogen Storage for Cars?

A Zippy Triple: Ternary hydride with autocatalytic reaction mechanism gives off hydrogen faster and at lower temperature

 

Hydrogen is the fuel of the future. Unfortunately, one problem remains: Hydrogen is a gas and cannot easily be pumped into a tank like gasoline. Storage in the form of solid hydrides, chemical compounds of hydrogen and a metal or semimetal, are good storage materials in principle, but have not been well suited to automotive applications. An American research team at the Ford Motor Company in Dearborn and the University of California, Los Angeles, has now developed a novel hydride that could be a useful starting point for the development of future automotive hydrogen-storage materials. As Jun Yang and his team report in the journal Angewandte Chemie, an “autocatalytic” reaction mechanism causes the composite made of three different hydrides to rapidly release hydrogen at lower temperatures and without dangerous by-products.

Certain hydrogen compounds, such as lithium borohydride (LiBH4 ) and magnesium hydride (MgH2), can release hydrogen and then take it up again. However, for automotive applications, they require temperatures that are too high to release hydrogen, the hydrogen release and uptake are far too slow, and decomposition reactions release undesirable by-products such as ammonia. In addition, these compounds can only be “recharged” under very high pressure and temperature conditions. The combination of two different hydrides (binary hydride) has previously been shown to improve things, as these compounds partly release hydrogen at lower temperatures than either of the individual components.

The researchers led by Yang went a step further and combined three hydrogen-containing compounds—lithium amide (LiNH2), lithium borohydride, and magnesium hydride—in a 2:1:1 ratio to form a ternary hydride. This trio has substantially better properties than previous binary materials.

The reason for this improvement is a complex sequence of reactions between the various components. The first reactions begin as soon as the starting components are ground together. Heating starts off more reactions, releasing the hydrogen. The mixture is “autocatalytic”, which means that one of the reactions produces the product cores for the following reaction, which speeds up the entire reaction sequence. The result is a lower desorption temperature; the release of hydrogen begins at 150 °C. In addition the hydrogen is very pure because neither ammonia nor any other volatile decomposition products are formed. Recharging the ternary hydride with hydrogen can be accomplished under moderate conditions.

 

 

 

 

 

 
 
 
 
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