Process of preparing nitrogen trifluoride by gas-solid reaction
AssigneeCentral Glass Company, Limited
InventorsMinoru Aramaki, Yoshiyuki Kobayashi, Tamio Nakamura, Hisaji Nakano, Takashi Suenaga
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Abstract
NF.sub.3 is prepared with good yields by reaction between fluorine gas and an ammonium complex of a metal fluoride, such as (NH.sub.4).sub.3 AlF.sub.6, in solid phase. The metal flouride ammonium complex may be one additionally containing an alkali metal, such as (NH.sub.4).sub.2 NaAlF.sub.6. The gas-solid reaction is carried out preferably at temperatures above 80.degree. C. and at relatively low partial pressures of fluorine in the gas phase of the reaction system, so that the reaction is easy to control.
Claims8
A process of preparing nitrogen trifluoride comprising the step of reacting an ammonium complex of a metal fluoride corresponding to the general formula (NH.sub.4).sub.x MF.sub.y, where x is an integer from 1 to 3, y is an integer from 5 to 7, and M represents Fe, Al, Ti, V, Cr, Mn, Ni, Co, Cu, Zr, Nb, W, Si, Ge, Sb, Sn or Pb in solid phase with fluorine gas.
A process or preparing nitrogen trifluoride comprising the step of reacting an ammonium complex of a metal fluoride corresponding to the formula (NH.sub.4).sub.x MM'F.sub.y where x is an integer from 1 to 3, y is an integer from 5 to 7, M represents Fe, Al, Ti, V, Cr, Mn, Ni, Co, Cu, Zr, Nb, W, Si, Ge, Sb, Sn, or Pb, and M' represents Li, Na or K in solid phase with fluorine gas.
Dependencies are inferred from the claim text.