EP0347830A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process for producing 1,1,1,2-tetrafluoroethane
Assignee: AGC Inc
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Filing: 1989-06-20
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Granted: —
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Expires: 2009-06-20
Abstract
Abstract A process for producing 1,1,1,2-tetrafluoroethane, which comprises reacting 2,2-dichloro-1,1,1,2-tetrafluoroethane, 2 chloro-1,1,1,2-tetrafluoroethane or a mixture thereof with hydrogen in the presence of a hydrogenation catalyst consisting essentially of a Group VIII element as the main component and at least one element selected from the group consisting of Group IB elements, lanthanum and lanthanide elements, as an additional component.
Inventors
- 👤 Shinsuke Morikawa
- 👤 Shunichi Samejima
- 👤 Masaru Yositake
- 👤 Shin Tatematsu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 10:34
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/23
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
58 words
A process for producing 1,1,1,2-tetrafluoroethane, which comprises reacting 2,2-dichloro 1,1,1,2-tetrafluoroethane, 2 chloro-1,1,1,2-tetrafluoroethane or a mixture thereof with hydrogen in the presence of a hydrogenation catalyst consisting essentially of a Group VIII element as the main component and at least one element selected from the group consisting of Group IB elements, lanthanum and lanthanide elements, as an additional component.
Claim 2
Dependent Claim
58 words
A process for producing 1,1,1,2-tetrafluoroethane, which comprises reacting 2,2-dichloro 1,1,1,2-tetrafluoroethane, 2 chloro-1,1,1,2-tetrafluoroethane or a mixture thereof with hydrogen in the presence of a hydrogenation catalyst consisting essentially of a Group VIII element as the main component and at least one element selected from the group consisting of Group IB elements, lanthanum and lanthanide elements, as an additional component.
Claim 3
Dependent Claim
24 words
The process according to Claim 1, wherein the proportion of the additional component in the hydrogenation catalyst is from 0.01 to 90% by weight.
Claim 4
Dependent Claim
53 words
The process according to Claim 1, wherein the hydrogenation catalyst further contains at least one high melting point metal element selected from the group consisting of Group VIII elements other than the element used as the main component, nickel, cobalt, rhenium, tungsten, tantalum, niobium, titanium, zirconium and molybdenum, as a second additional compnent.
Claim 5
Dependent Claim
44 words
The process according to Claim 3, wherein the proportion of the first additional component in the hydrogenation catalyst is from 0.01 to 90% by weight, and the proportion of the second additional component in the hydrogenation catalyst is from 0.01 to 20% by weight.
Claim 6
Dependent Claim
34 words
The process according to any one of Claims 1 to 4, wherein the hydrogenation catalyst is supported on a carrier selected from the group consisting of active carbon carrier, alumina carrier and zirconia carrier.
Claim 7
Dependent Claim
28 words
The process according to any one of Claims 1 to 5, wherein the reaction is conducted in a gas phase at a temperature of from 120 to 450°C.
Claim 8
Dependent Claim
22 words
The process according to any one of Claims 1 to 6, wherein the hydrogenation catalyst is prepared by a wet reduction method.
Claim 9
Dependent Claim
39 words
A process for producing 1,1,1,2-tetrafluoroethane, which comprises reacting 2,2-dichloro-1,1,1,2-tetrafluoroethane, 2-chloro-1,1,1,2-tetrafluoroethane or a mixture thereof with hydrogen in the presence of a hydrogenation catalyst prepared by a wet reduction method and comprising a Group VIII element as the main component.
Claim 10
Dependent Claim
39 words
A process for producing 1,1,1,2-tetrafluoroethane, which comprises reacting 2,2-dichloro-1,1,1,2-tetrafluoroethane, 2-chloro-1,1,1,2-tetrafluoroethane or a mixture thereof with hydrogen in the presence of a hydrogenation catalyst prepared by a wet reduction method and comprising a Group VIII element as the main component.
References Cited (Backward Citations)
No citation records indexed.
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