Search Results

You are looking at 1 - 3 of 3 items for :

  • "lithium orthosilicate" x
  • Refine by Access: All Content x
Clear All

Abstract  

The kinetics of the interaction between lithium carbonate and silica with various degrees of dispersion was investigated by TG and DTA methods. It was found that the utilization of pyrogenic silica with a specific surface area of about 300 m2g-1 instead of aerosil with one of 175 m2g-1 leads to an increase of the reaction rate between lithium carbonate and silica, which depends on the formation and growth of lithium orthosilicate crystals in the first stage, and is conditioned by the diffusion of lithium and oxygen ions through the lithium orthosilicate layer formed at temperatures above 800 K. This supposition is supported by the kinetic analysis results obtained with the use of the different models. The optimal regime of heating is recommended.

Restricted access

chemisorption appears to be slightly favored in comparison to the Li 4 SiO 4 sample ( T ≤ 300 °C). V addition may modify the superficial reactivity of the lithium orthosilicate. However, at high temperatures where the CO 2 chemisorption is controlled by

Restricted access

0600935 . 12. Mejía-Trejo , VL , Fregoso-Israel , E , Pfeiffer , H . 2008 . Textural, structural and CO 2 chemisorption effects produced on the lithium orthosilicate by its doping with

Restricted access