Elrey L Mccann

US Patent:

50576348, Oct 15, 1991

Filed:

Dec 19, 1989

Appl. No.:

7/452402

Inventors:

James L. Webster - Parkersburg WV
Elrey L. McCann - Mendenhall PA
Douglas W. Bruhnke - Landenberg PA
Jan J. Lerou - Chadds Ford PA
William H. Manogue - Newark DE
Leo E. Manzer - Wilmington DE
Steven H. Swearingen - Wilmington DE
Swiatoslaw Trofimenko - Wilmington DE
Cristobal Bonifaz - Conway MA

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C07C 1700
C07C 1708

US Classification:

570157

Abstract:

The present invention relates to multistep syntheses of hexafluoropropylene from acyclic three-carbon hydrocarbons or partially halogenated acyclic three-carbon hydrocarbons. In all these syntheses the first step is a vapor-phase chlorofluorination of the starting material to one or more saturated chlorofluorocarbons. Novel catalysts are also provided.

US Patent:

41102517, Aug 29, 1978

Filed:

Sep 22, 1976

Appl. No.:

5/725584

Inventors:

Alan Lauder - Newark DE
Elrey L. McCann - Wilmington DE

Assignee:

E. I. Du Pont de Nemours & Company - Wilmington DE

International Classification:

B01J 2712
B01J 2710

US Classification:

252442

Abstract:

Metal oxyhalides of the general formula ABO. sub. 3-f X. sub. f having perovskite-type crystal structures in which A and B are each cations of at least one metal and a portion of the type B cations are catalytically active; X is fluoride or chloride; and f is about from 0. 01 to 1. 0; useful for the promotion of oxidation and reduction reactions, including those involved in the cleanup of exhaust gases of internal combustion engines.

US Patent:

52200833, Jun 15, 1993

Filed:

Jan 28, 1992

Appl. No.:

7/826296

Inventors:

James L. Webster - Parkersburg WV
Steven H. Swearingen - Wilmington DE
Douglas W. Bruhnke - Landenberg PA
Leo E. Manzer - Wilmington DE
Elrey L. McCann - Mendenhall PA

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C07C 1700

US Classification:

570169

Abstract:

The present invention relates to syntheses of perfluoropropane--. e. , octafluoropropane--from acyclic three-carbon hydrocarbons or partially or totally halogenated acyclic three-carbon hydrocarbons.

US Patent:

41511239, Apr 24, 1979

Filed:

Oct 15, 1976

Appl. No.:

5/732747

Inventors:

Elrey L. McCann - Wilmington DE

Assignee:

E. I. Du Pont de Nemours & Company - Wilmington DE

International Classification:

B01J 2104
B01J 2310
B01J 2358
B01J 2378

US Classification:

252462

Abstract:

Catalytic activity of metal oxides is enhanced through application of the metal oxide to a second metal oxide having a perovskite crystal structure.

US Patent:

50434918, Aug 27, 1991

Filed:

Dec 19, 1989

Appl. No.:

7/452401

Inventors:

James L. Webster - Parkersburg WV
Elrey L. McCann - Mendenhall PA
Douglas W. Bruhnke - Landenberg PA
Jan J. Lerou - Chadds Ford PA
Leo E. Manzer - Wilmington DE
William H. Manogue - Newark DE
Paul R. Resnick - Wilmington DE
Swiatoslaw Trofimenko - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C07C 1700
C07C 1708

US Classification:

570157

Abstract:

The present invention relates to multistep syntheses of hexafluoropropylene from propane, propylene or partially halogenated acyclic three-carbon hydrocarbons. In all these syntheses the first step is a vapor-phase chlorofluorination of the starting material to the unsaturated chlorofluorocarbon CF. sub. 3 CClCCl. sub. 2.

US Patent:

40092429, Feb 22, 1977

Filed:

Apr 8, 1975

Appl. No.:

5/566106

Inventors:

Alan Lauder - Newark DE
Elrey L. McCann - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

B01J 2310

US Classification:

4232132

Abstract:

Oxidation and reduction reactions using metal oxyhalide catalysts of the general formula ABO. sub. 3. sub. -f X. sub. f having perovskite-type crystal structures in which A and B are each cations of at least one metal and a portion of the type B cations are catalytically active; X is fluoride or chloride; and f is about from 0. 01 to 2. 5.

US Patent:

48618020, Aug 29, 1989

Filed:

Feb 17, 1988

Appl. No.:

7/156907

Inventors:

Elrey L. McCann - Mendenhall PA

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C07C 104

US Classification:

518717

Abstract:

Improved process for the catalytic gas phase preparation of low molecular weight (C. sub. 2-6) olefinic hydrocarbons from mixtures of H. sub. 2 and CO, the improvement consisting of contacting and reacting a mixture of H. sub. 2 and CO, at a H. sub. 2 /CO molar ratio within the range 0. 3 to 1. 5, at a space velocity of 1 to 100 minutes. sup. -1, at a pressure of 1 to 2000 psia (6. 894 kPa to 13. 788 MPa), at a temperature within the range 200. degree. to 400. degree. C. , in the presence of the catalyst of the empirical formula AB. sub. 1-a Fe. sub. a O. sub. 3, wherein A, B and a are defined herein, for example, LaFeO. sub. 3.

US Patent:

50684728, Nov 26, 1991

Filed:

Dec 19, 1989

Appl. No.:

7/452404

Inventors:

James L. Webster - Parkersburg WV
Swiatoslaw Trofimenko - Wilmington DE
Paul R. Resnick - Wilmington DE
Douglas W. Bruhnke - Landenberg PA
Jan J. Lerou - Chadds Ford PA
William H. Manogue - Newark DE
Leo E. Manzer - Wilmington DE
Elrey L. McCann - Mendenhall PA
Steven H. Swearingen - Wilmington DE
James A. Trainham - Newark DE
Cristobal Bonifaz - Conway MA

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C07C 1700
C07C 1708

US Classification:

570157

Abstract:

The present invention relates to multistep syntheses of hexafluoropropylene from hexachloropropylene. In all these syntheses the first step is a fluorination of the starting material; later steps convert the initial products to CF. sub. 3 --CFCl--CF. sub. 3, which is dehalogenated to the desired product.