期刊
JOURNAL OF PHYSICAL CHEMISTRY B
卷 110, 期 22, 页码 10619-10629出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp057130k
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The intercalation of five lithium salts into the gibbsite and bayerite polymorphs of Al(OH)(3) has been studied using in situ energy-dispersive X-ray diffraction. The kinetics and mechanisms of the reactions have been modeled using the Avrami-Erofe'ev model. The kinetic data suggest that the reaction mechanisms are predominantly nucleation controlled, although the intercalation of LiNO3 into bayerite and of Li2SO4 into gibbsite proceed via two-stage mechanisms, one part of which is diffusion controlled. All the reactions proceed directly from the host to the product, except for the intercalation of Li2SO4 into gibbsite where a more hydrated intermediate form of [LiAl2(OH)(6)](2)SO4 center dot yH(2)O is generated prior to the final product.
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