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ARPN Journal of Science and Technology >> Volume 7, Issue 1, January 2017

ARPN Journal of Science and Technology


Reaction Kinetics for the Synthesis of Lithium-TITANATE (Li2TiO3) By Solid State Reaction

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Author D. Mandal
ISSN 2225-7217
On Pages 59-66
Volume No. 4
Issue No. 2
Issue Date March 01, 2014
Publishing Date March 01, 2014
Keywords Solid state reaction, TG-DTA, lithium-titanate, fusion reaction, reaction kinetics.



Abstract

Fusion of deuterium and tritium is being considered to produce energy to meet the future energy demand. Deuterium is available in nature whereas, tritium is not. Tritium may be produced by the nuclear reaction of neutron with lithium-6 (Li6) isotope and for this, lithium-based ceramics, enriched by Li6 isotope are considered. Lithium titanate (Li2TiO3) is one such Li-based ceramic material considered for tritium generation for future thermonuclear fusion reactors. Li2TiO3 will be used in the form of spherical pebbles with some specific properties. Sol-gel, solution-combustion and wet process have been developed to synthesize and fabricate Li2TiO3 pebbles. The common drawback of all these process is that the effluents or off gases produces in these processes may contain Li6, which is not acceptable. A solid state reaction process has been developed in which Li2TiO3 is synthesized by reacting lithium carbonate with titanium dioxide, pebbles are fabricated by using extrusion and spherodization and finally, pebbles of desired specifications are obtained by sintering. For large scale production; the process must to be optimized with respect to reaction parameters; for which the required kinetic data are not available. In a previous study the thermo-gravimetric and differential thermal analysis (TG-DTA) was used to study the reaction parameters. In the present study, the kinetic parameters have been determined from the reported TG-DTA data.


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