fulltext.study @t Gmail

Activated zirconium oxide catalysts to synthesize dichloropentafluoropropane by the reaction of dichlorofluoromethane with tetrafluoroethylene

Paper ID Volume ID Publish Year Pages File Format Full-Text
42533 45929 2009 7 PDF Available
Title
Activated zirconium oxide catalysts to synthesize dichloropentafluoropropane by the reaction of dichlorofluoromethane with tetrafluoroethylene
Abstract

Zirconium oxide catalysts for manufacturing dichloropentafluoropropanes (HCFC-225ca and 225cb) by the reaction of dichlorofluoromethane with tetrafluoroethylene were investigated. When activated by elemental fluorine or dichlorodifluoromethane, zirconium oxide exhibited high catalytic activity and better selectivity toward HCFC-225s in the reaction at ordinary temperatures. XRD and XPS analyses revealed that the fluorine-activated zirconium oxide catalyst is a mixture of zirconium oxide, zirconium tetrafluoride, and partially fluorinated zirconium oxide. These results suggest that zirconium oxide underwent a surface fluorination reaction, resulting in enhanced catalytic activity as a Lewis acid.

Graphical abstractDichloropentafluoropropanes (HCFC-225s) were synthesized by the reaction of dichlorofluoromethane with tetrafluoroethylene using activated zirconium oxide catalysts at ordinary temperatures. XRD and XPS analyses revealed that the fluorine-activated zirconium oxide catalyst is a mixture of zirconium oxide, zirconium tetrafluoride, and partially fluorinated zirconium oxide. CCl2F2-activated zirconium oxide and zirconium chlorofluoride catalysts were compared by studying the reaction kinetics.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Lewis acid catalyst; Fluorinated; Zirconium oxide; XPS; XRD; Dichloropentafluoropropane; Chlorofluoride; Selectivity; HCFC
First Page Preview
Activated zirconium oxide catalysts to synthesize dichloropentafluoropropane by the reaction of dichlorofluoromethane with tetrafluoroethylene
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 359, Issues 1–2, 15 May 2009, Pages 158–164
Authors
, , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us