JPS5673031A - Preparation of tetrafluoromethane - Google Patents

Preparation of tetrafluoromethane

Info

Publication number
JPS5673031A
JPS5673031A JP15032779A JP15032779A JPS5673031A JP S5673031 A JPS5673031 A JP S5673031A JP 15032779 A JP15032779 A JP 15032779A JP 15032779 A JP15032779 A JP 15032779A JP S5673031 A JPS5673031 A JP S5673031A
Authority
JP
Japan
Prior art keywords
temperature
reaction
tetrafluoromethane
monochlorotrifluoromethane
tetrachloromethane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP15032779A
Other languages
Japanese (ja)
Other versions
JPS6210484B2 (en
Inventor
Hidetoshi Nakayama
Hidetaka Fujita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Holdings Corp
Original Assignee
Showa Denko KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Showa Denko KK filed Critical Showa Denko KK
Priority to JP15032779A priority Critical patent/JPS5673031A/en
Publication of JPS5673031A publication Critical patent/JPS5673031A/en
Publication of JPS6210484B2 publication Critical patent/JPS6210484B2/ja
Granted legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To prepare tetrafluoromethane in high conversion, with long catalytic life, by reacting tetrachloromethane with HF at a relatively low temperature to produce monochlorotrifluoromethane, and then raising the temperature to continue the reaction.
CONSTITUTION: Tetrafluoromethane is prepared by reacting (A) a mixture of a partly chlorinated and fluorinated methane derivative and chlorine gas, (B) tetrachloromethane, and/or (C) chlorofluoromethane containing two or more chlorine atoms, with HF using a solid catalyst (e.g. activated chromium oxide). The reaction with HF is carried out first at a temperature sufficiently low to produce mainly monochlorotrifluoromethane (≤380°C, pref. ≤350°C), and then after the purification of the reaction product gas, at a temperature higher than the first stage reaction temperature (i.e. ≥350°C, pref. ≥380°C).
COPYRIGHT: (C)1981,JPO&Japio
JP15032779A 1979-11-20 1979-11-20 Preparation of tetrafluoromethane Granted JPS5673031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15032779A JPS5673031A (en) 1979-11-20 1979-11-20 Preparation of tetrafluoromethane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15032779A JPS5673031A (en) 1979-11-20 1979-11-20 Preparation of tetrafluoromethane

Publications (2)

Publication Number Publication Date
JPS5673031A true JPS5673031A (en) 1981-06-17
JPS6210484B2 JPS6210484B2 (en) 1987-03-06

Family

ID=15494587

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15032779A Granted JPS5673031A (en) 1979-11-20 1979-11-20 Preparation of tetrafluoromethane

Country Status (1)

Country Link
JP (1) JPS5673031A (en)

Also Published As

Publication number Publication date
JPS6210484B2 (en) 1987-03-06

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