Purification of tellurium to 6N using a multistage vacuum distillation method

A. M. Hageman; M. J. Harrison; N. Fritz; T. N. Krehbiel; R. White; J. Patenaude; D. S. McGregor

doi:10.1117/12.740525

24 September 2007 Purification of tellurium to 6N using a multistage vacuum distillation method

A. M. Hageman, M. J. Harrison, N. Fritz, T. N. Krehbiel, R. White, J. Patenaude, D. S. McGregor

Proceedings Volume 6707, Penetrating Radiation Systems and Applications VIII; 67070Z (2007) https://doi.org/10.1117/12.740525
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

Tellurium (Te) is purified using a multistage vacuum distillation technique. Specially designed quartz ampoules coupled to a 10^-6 torr vacuum system are used for one, two, and three stage distillations. The unique quartz design allows removal of residual materials between stages without handling purified material or exposing it to atmospheric conditions. Average deposition of purified material is 0.93 g/min at a distillation temperature of 525°C. The average overall yield per stage is 84% for single stage distillation, 80% for two stages, and 76% for three stages. Glow discharge mass spectrometry testing (GDMS) is used to analyze samples of purified tellurium. GDMS results show 6N purity (99.9999%) is achieved after the three stage distillation process when starting with 4N+ pure material.

Citation Download Citation

A. M. Hageman, M. J. Harrison, N. Fritz, T. N. Krehbiel, R. White, J. Patenaude, and D. S. McGregor "Purification of tellurium to 6N using a multistage vacuum distillation method", Proc. SPIE 6707, Penetrating Radiation Systems and Applications VIII, 67070Z (24 September 2007); https://doi.org/10.1117/12.740525

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