METHOD FOR PRODUCING NITROGEN TRIFLUORIDE

Title:

METHOD FOR PRODUCING NITROGEN TRIFLUORIDE

Document Type and Number:

WIPO Patent Application WO/2003/027010

Kind Code:

A1

Abstract:

The invention relates to inorganic chemistry, in particular to methods for producing nitrogen trifluoride. The inventive method consists in fluorating the solid phase of ammonium polyfluoride salt having the formula NH ¿4?Fx HF, wherein x is higher than 0 to 1.3 and can be equal to 1.3. The initial salt is used mixed with a sorbing agent which is capable to sorb hydrogen fluoride formed by synthesis. Said sorbing agent is embodied in the form of metal fluorides having the formula MeF, wherein Me is a metal of the 1?st¿ group of the Periodic table, preferably NaF, KF and LiF. RbF and CsFF can be also used, but the use thereof being economically impractical. The production of nitrogen trifluoride is carried out at a temperature ranging from 20 to 125 °C. Said invention makes it possible to totally use the initial salt NH ¿4?Fx HF and to remove hydrogen fluoride thus produced.

More Like This:

JP6660476	How to purify waste hydrochloric acid
JP2729709	INDUSTRIAL APPLICABILITY: Method for removing free chlorine in hydrochloric acid
JPS54124894	BURNING PROCESS OF CHLORINE-CONTAINING SOLID ORGANIC MATERIALS

Inventors:

ZAYTZEV SERGEY ALEXANDROVICH (RU)
KUZNETZOV ANDREY SERGEYEVICH (RU)
LVOV VIKTOR ALEXEYEVICH (RU)
MENSHOV VLADIMIR SERGEYEVICH (RU)
RABINOVICH ROSTISLAV LEONIDOVI (RU)
SAPOZHNIKOV MIKHAIL VASILYEVIC (RU)
TURKIN VLADIMIR SERGEYEVICH (RU)
SHOPEN VIKTOR PANTELEYMONOVICH (RU)
BARABANOV VALERY GEORGIYEVICH (RU)
VINOGRADOV DMITRY VIKTOROVICH (RU)

Application Number:

PCT/RU2002/000250

Publication Date:

April 03, 2003

Filing Date:

May 20, 2002

Export Citation:

Click for automatic bibliography generation Help

Assignee:

ZAO ASTOR ELECTRONICS (RU)
ZAYTZEV SERGEY ALEXANDROVICH (RU)
KUZNETZOV ANDREY SERGEYEVICH (RU)
LVOV VIKTOR ALEXEYEVICH (RU)
MENSHOV VLADIMIR SERGEYEVICH (RU)
RABINOVICH ROSTISLAV LEONIDOVI (RU)
SAPOZHNIKOV MIKHAIL VASILYEVIC (RU)
TURKIN VLADIMIR SERGEYEVICH (RU)
SHOPEN VIKTOR PANTELEYMONOVICH (RU)
BARABANOV VALERY GEORGIYEVICH (RU)
VINOGRADOV DMITRY VIKTOROVICH (RU)

International Classes:

C01B7/01; C01B21/083; (IPC1-7): C01B21/083

Foreign References:

JPH03232710A	1991-10-16
US4543242A	1985-09-24
EP0959040A1	1999-11-24
SU196734A

Attorney, Agent or Firm:

Polikarpov, Alexander Viktorovich (St.Petersburg, 6, RU)

Download PDF:

View/Download PDF PDF Help

Previous Patent: NO¿X? REDUCTION METHODS & APPARATUSES

Next Patent: CATALYST-INDUCED GROWTH OF CARBON NANOTUBES ON TIPS OF CANTILEVERS AND NANOWIRES