GAS-PHASE CATALYTIC FLUORINATION

Japanese Patent JP2018021039

A

PROBLEM TO BE SOLVED: To provide a method for producing a fluoride by subjecting a chloride to catalytic fluorination using hydrogen fluoride in a gas phase.SOLUTION: There is provided a fluorination method, the method comprising the following steps (1) and (2): (1) an activation step of bringing a fluorination catalyst into contact with an oxidizer-containing gas stream for at least one hour; and (2) a reaction step of reacting a chloride with hydrogen fluoride in a gas phase in the presence of a fluorination catalyst. Preferably, the reaction method is carried by alternately and repeatedly performing a plurality of reaction steps and a plurality of regeneration steps, the reaction steps comprise subjecting the chloride and the hydrogen fluoride to gas phase reaction in the presence of the fluorination catalyst and the regeneration steps comprises bringing the fluorination catalyst into contact with the oxidizer-containing gas stream. More preferably, the oxidizer-containing gas stream in the activation step and/or the regeneration steps contains hydrogen fluoride in addition to an oxidizer or is air containing no hydrogen fluoride.SELECTED DRAWING: None

JPH0794397	[Title of the Invention] A method for purifying 1,1-dichloro-1-fluoroethane.
JP7132378	Catalyst and process for producing fluorinated hydrocarbons using this catalyst

ANNE PIGAMO
NICOLAS DOUCET
LAURENT WENDLINGER

JP2017149830A

February 08, 2018

August 02, 2017

Click for automatic bibliography generation  

ARKEMA FRANCE

C07C17/20; B01J27/132; B01J27/32; B01J37/14; B01J37/26; B01J38/46; C07C21/18

JP2010505806A	2010-02-25
JP2010531897A	2010-09-30
JP2010534680A	2010-11-11

WO2008040969A2

2008-04-10

Takashi Koshiba
Hiroshi Koshiba

Previous Patent: 処理液及び基板洗浄方法

Next Patent: N - (4-cyclohexyl 3-trifluoromethyl benzyloxy) - Manufacturing method of aceto imidic acid ethyl est...