Skip to main content

Preparation of Inorganic Compounds at Near Room Temperature by the Direct Conversion of Borate Glass in Solutions of the Corresponding Anions

Buy Article:

$43.00 plus tax (Refund Policy)

The preparation of alkaline-earth chromate, selenite, and stannate compounds at near room temperature by the direct conversion of borate glass in aqueous solutions of the corresponding anions was investigated. Borate glass particles (150–300 m) with the composition 20Na2O·20CaO·60B2O3 or 20Na2O·20BaO·60B2O3 (mol%) were prepared by conventional methods and immersed in dilute solutions of K2CrO4, K2SeO3, or K2SnO3 at 37°C. The conversion of the glasses was monitored using weight loss and pH measurements, while X-ray diffraction (XRD), X-ray fluorescence, and scanning electron microscopy were used to characterize the structure and composition of the products. After a reaction for 140–320 h, porous crystalline products identified by XRD as CaSeO3.H2O, CaSnO3.3H2O, BaCrO4, and BaSeO3 were obtained. The conversion of fibers (0.5–1.0 mm in diameter) of the Na2O–BaO–B2O3 glass in K2CrO4 solution was pseudomorphic. The kinetics and mechanisms of the conversion process, as well as the structure of the products, are discussed.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Document Type: Research Article

Affiliations: 1: Department of Materials Science and Engineering, Missouri University of Science and Technology, Rolla, Missouri 65409 2: Institute of Bioengineering and Information Technology Materials, Tongji University, Shanghai, 200092, China

Publication date: 2008-07-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more