Lithium-Aluminium Double Hydroxide

Methods for the hydrothermal synthesis of the aluminosilicates of Mg, Ca, and Ba have been reviewed.""" A number of lithium aluminium double phosphates have been isolated from the reactions of lithium hydroxide dialuminate with H3PO4 solutions."""... 

Poroshina T.A., Kotsupalo N.P., Menzheres L.T., Isupov V.P. Crystal chemical features of the anion forms of double hydroxide of aluminium and lithium. Zhum. Strukt. Khimii 1994, 35 158-63. 

The disordered aluminium hydroxide and the chloride of the double hydroxide of lithium and aluminium (LADH-Cl) synthesized on the basis of the former species are capable of extraction lithium selectively from complex salt chloride systems while the well crystalline compounds possess these properties to a lesser extent. The formation of LADH-Cl from aluminium hydroxide, desorption and sorption of lithium chloride are connected with the processes of its intercalation-deintercalation in the layered matrix. These processes can be described by the following scheme ... 

Thus, there is no doubt that the process of lithium recovery leads finally to the formation of anionic form of double hydroxide of lithium and aluminium (LADH-X). 

Reduction of unsaturated ketones to saturated alcohols is achieved by catalytic hydrogenation using a nickel catalyst [49], a copper chromite catalyst [50, 887] or by treatment with a nickel-aluminum alloy in sodium hydroxide [555]. If the double bond is conjugated, complete reduction can also be obtained with some hydrides. 2-Cyclopentenone was reduced to cyclopentanol in 83.5% yield with lithium aluminum hydride in tetrahydrofuran [764], with lithium tris tert-butoxy)aluminium hydride (88.8% yield) [764], and with sodium borohydride in ethanol at 78° (yield 100%) [764], Most frequently, however, only the carbonyl is reduced, especially with application of the inverse technique (p. 21). 

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