No abstract

The iso-and non-isothermal transformations taking place on the heating of LiH2PO,~, Li2HPO4, LisPaOio-5H20, mixtures of LiH~PO4 + 2LizHPO 4 and LiH2PO4 + Li4P2OT(/) in vacuum, air and water vapour atmospheres at 20-1050" were studied using TG, DTG, DSC, DTA, IR spectroscopy, XRD and TLC analyses. It was shown that solid-phase interaction of the mixture components with the general ratio Li: P ~ 5: 3, in contrast to the interaction of analogous sodium (potassium) phosphate mixture components, does not lead to the quantitative formation of anhydrous triphosphate. This is explained by the high crystallization rate of lithium pyrophosphate, which, due to its low reactivity, does not participate in further anion condensation. The increase of triphosphate yield is promoted by the liquid pha~e formed on disproportionation of acid salts, on melting of reaction components or as a result of introduction of urea additive.

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No abstract

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.