公开(公告)号：US11034636B2

公开(公告)日：2021-06-15

申请号：US16962549

申请日：2018-12-25

Applicant: SHOWA DENKO K.K.

Inventor： Yohsuke Fukuchi ,  Tomokazu Sugawara ,  Shinya Oguro ,  Hiroshi Kobayashi

IPC: C07C17/361 ,  C07C17/367 ,  C07C19/08

Abstract: A method for producing tetrafluoromethane as follows is unlikely to damage a reaction apparatus and can produce tetrafluoromethane safely, inexpensively, and stably. To a raw material liquid containing a fluorinated hydrocarbon represented by chemical formula CpHqClrFs (wherein p is an integer of 3 to 18, q is an integer of 0 to 3, r is an integer of 0 to 9, and s is an integer of 5 to 30) and having no carbon-carbon unsaturated bond, fluorine gas is introduced, and concurrently a reaction inducer is introduced in a gas state, giving tetrafluoromethane. The reaction inducer is reacted with fluorine gas to induce a reaction of forming tetrafluoromethane from the fluorinated hydrocarbon and the fluorine gas and is at least one reaction inducer selected from a hydrocarbon gaseous at normal temperature and pressure and hydrogen gas.