Preparation of high purity phosphorus

Chemistry of inorganic compounds – Phosphorus or compound thereof – Elemental phosphorus

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

423299, 423300, C01B 2501, C01B 2502, C01B 2504, C01B 2510

Patent

active

042871654

ABSTRACT:
High purity phosphorus and phosphorus compounds are prepared by first reacting H.sub.3 PO.sub.4 with a lead compound such as PbO to form Pb.sub.3 (PO.sub.4).sub.2. The Pb.sub.3 (PO.sub.4).sub.2 is reduced with H.sub.2 at a temperature sufficient to form gaseous phosphorus which can be recovered as a high purity phosphorus product. Phosphorus compounds can be easily prepared by reacting the phosphorus product with gaseous reactants. For example, the phosphorus product is reacted with gaseous Cl.sub.2 to form PCl.sub.5. PCl.sub.5 is reduced to PCl.sub.3 by contacting it in the gaseous phase with solid elemental phosphorus. POCl.sub.3 can be prepared by contacting PCl.sub.5 in the gaseous phase with solid P.sub.2 O.sub.5. The general process is particularly suitable for the preparation of radiophosphorus compounds.

REFERENCES:
patent: 3511599 (1970-05-01), Suriani
Hulter, Contribution a l'Etude de l'Action de l'Hydrogen sur les Phosphates An. de Chim, June 1953.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Preparation of high purity phosphorus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of high purity phosphorus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of high purity phosphorus will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1675819

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.