Claims
- 1. A method for the removal of phosgene impurities from boron trichloride comprising:
- (i) Admitting a gaseous mixture of BCl.sub.3 containing COCl.sub.2 as an impurity into a reaction cell to achieve a predetermined pressure in said reaction cell that is operable with the electrical excitation energy level employed to effect decomposition of said COCl.sub.2 impurity;
- (ii) delivering an electrical excitation energy level for a predetermined time period through said gaseous mixture to effect decomposition of said COCl.sub.2 impurity;
- (iii) monitoring said COCl.sub.2 impurity concentration level to determine when all of said COCl.sub.2 impurity has been decomposed; and,
- (iv) repeating said step of delivering an electrical excitation energy level when said monitoring step determines that COCl.sub.2 impurity is present in said reaction cell.
- 2. The method of claim 1 wherein said predetermined pressure is about 100 torr and wherein said electrical excitation energy level delivered is a direct current discharge that is delivered through said gaseous mixture for a predetermined time period of about one minute and wherein said monitoring step employs a spectrometer.
- 3. The method of claim 1 wherein said predetermined pressure is about 100 torr and wherein said electrical excitation energy level delivered is an alternating current discharge that is delivered through said gaseous mixture for a predetermined time period of about one minute and wherein said monitoring step employs a spectrometer.
- 4. The method of claim 1 wherein said predetermined pressure is about 100 torr and wherein said electrical excitation energy level delivered is a focused radio frequency energy that is delivered through said gaseous mixture for a predetermined time period of about one minute and wherein said monitoring step employs a spectrometer.
- 5. The method of claim 1 wherein said predetermined pressure is about 100 torr and wherein said electrical excitation energy delivered is a focused electron beam that is delivered through said gaseous mixture for a predetermined time period of about one minute and wherein said monitoring step employs a spectrometer.
DEDICATORY CLAUSE
The invention described herein may be manufactured, used, and licensed by or for the Government for governmental purposes without the payment to us of any royalties thereon.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3485735 |
Manion et al. |
Dec 1969 |
|
4063896 |
Merritt et al. |
Dec 1977 |
|
4104146 |
Sudduth et al. |
Aug 1978 |
|
Non-Patent Literature Citations (1)
Entry |
Tech. Report, TR-77-7 by Tanton et al., pp. 1-10, U.S. Army Missile R. & D.ommand, Redstone Arsenal, 4/77. |