John H Leonard

Author:

John K. Leonard

ISBN #:

0929650646

Author:

John P. Leonard

ISBN #:

0387293450

Author:

John P. Leonard

ISBN #:

0387293469

Author:

John P. Leonard

ISBN #:

0404553729

Author:

John William Leonard

ISBN #:

0810340186

Author:

John Leonard

ISBN #:

0140424393

Author:

John Leonard

ISBN #:

0140424261

Author:

John Leonard

ISBN #:

0140433635

US Patent:

45608210, Dec 24, 1985

Filed:

Aug 12, 1983

Appl. No.:

6/522938

Inventors:

C. Andrew Jones - Newtown Square PA
John J. Leonard - Springfield PA
John A. Sofranko - West Chester PA

Assignee:

Atlantic Richfield Company - Los Angeles CA

International Classification:

C07C 200

US Classification:

585500

Abstract:

A continuous method for synthesizing hydrocarbons from a methane source which comprises contacting methane with particles comprising an oxidative synthesizing agent under synthesis conditions wherein particles recirculate between two physically separate zones: a methane contact zone and an oxygen contact zone. Preferably, particles are maintained in each of the two zones as fluidized beds of solids. Particularly effective oxidative synthesizing agents are reducible oxides of metals selected from the group consisting of Mn, Sn, In, Ge, Pb, Sb, and Bi.

US Patent:

40923550, May 30, 1978

Filed:

Feb 7, 1977

Appl. No.:

5/766097

Inventors:

John Joseph Leonard - Springfield PA

Assignee:

Atlantic Richfield Company - Los Angeles CA

International Classification:

C07C 5132
C07C 5704
C07C 5706
C07C 5708

US Classification:

260530N

Abstract:

A method for the production of. alpha. ,. beta. -unsaturated aliphatic carboxylic acids by the liquid phase oxidation of the corresponding. alpha. ,. beta. -unsaturated aliphatic aldehydes, particularly acrolein and methacrolein, and the in situ decomposition of unsaturated intermediate peroxy (peroxide) compounds formed during oxidation, which comprises passing oxygen or an oxygen-containing gas through an inert solvent solution of the aldehyde at a suitable temperature and pressure in the presence of a catalytic amount of an inorganic or organic antimony salt. The solvent employed may also be mixed with water forming a heterogeneous solvent system.

US Patent:

46297189, Dec 16, 1986

Filed:

Dec 18, 1984

Appl. No.:

6/683118

Inventors:

C. Andrew Jones - Newtown Square PA
John J. Leonard - Springfield PA
John A. Sofranko - Malvern PA
Howard P. Withers - Douglassville PA
E. William Breder - Oak Forest IL
Marvin F. L. Johnson - Homewood IL
John A. Jaecker - Homewood IL

Assignee:

Atlantic Richfield Company - Los Angeles CA

International Classification:

B01J 2334
B01J 2108

US Classification:

502241

Abstract:

A class of mixed oxide catalysts comprising Mn-containing oxides, alkali metals or compounds thereof, and at least one member of the group consisting of oxides of Si, oxides of alkaline earth metals, and mixed oxides of Si and at least one alkaline earth metal. In the more preferred embodiments, the third component serves as a carrier for the Mn and alkali metal components. The composition preferably comprises a major amount of the carrier material and minor amounts of the other components. The compositions are useful for hydrocarbon coversion, methane conversion, and oxidative dehydrogenation processes characterized by formation of coproduct water.

US Patent:

54244587, Jun 13, 1995

Filed:

Mar 8, 1994

Appl. No.:

8/207578

Inventors:

Gordon A. Sullivan - Princeton Jct. NJ
Herry E. Eilerts-de Haan - Gerrards Cross, GB2
William J. Piel - Media PA
John J. Leonard - Springfield PA

Assignee:

Arco Chemical Technology, L.P. - Grennville DE

International Classification:

C07D30119
C07D30304
C07C 4106

US Classification:

549529

Abstract:

The present invention provides a novel integration of an existing MTBE process unit with new propylene oxide producing facilities whereby through this integration new propylene oxide production is achieved without significant increase in MTBE production.

US Patent:

40311961, Jun 21, 1977

Filed:

Aug 24, 1976

Appl. No.:

5/717309

Inventors:

John J. Leonard - Springfield PA

Assignee:

Atlantic Richfield Company - Los Angeles CA

International Classification:

C01G 1500

US Classification:

423624

Abstract:

In an aqueous alkaline solution having a pH greater than 11. 9, thallous isobutyrate is oxidized by air in a temperature within a range from about 90. degree. C to about 250. degree. C to prepare a slurry of thallic oxide from which thallic oxide can be recovered. The alkaline isobutyrate solution can be treated with carbon dioxide under pressure to form a carbonate salt and isobutyric acid, which can be solvent extracted from the aqueous system. Such isobutyric acid can be employed in a 30 percent aqueous solution at 90. degree. -150. degree. C to dissolve thallic oxide and to prepare thallic triisobutyrate. This aqueous solution of thallic triisobutyrate can be employed for the oxidation of an organic compound susceptible to oxidation to desirable partially oxidized organic compounds, such as the oxidation of propylene to propylene oxide. The carbonate salt can be thermally decomposed to regenerate an alkaline metal hydroxide and carbon dioxide. The availability of this novel preparation of thallic oxide makes feasible the recycling of most components, so that the thallium ion is an intermediate useful for the oxidation of an organic compound indirectly using the oxygen of air through such cyclic processing of the thallium ion.

US Patent:

44436467, Apr 17, 1984

Filed:

Aug 12, 1983

Appl. No.:

6/522906

Inventors:

C. Andrew Jones - Newtown Square PA
John J. Leonard - Springfield PA
John A. Sofranko - West Chester PA

Assignee:

Atlantic Richfield Company - Los Angeles CA

International Classification:

C07C 200

US Classification:

585500

Abstract:

A method for synthesizing hydrocarbons from a methane source which comprises contacting methane with an oxide of bismuth at a temperature of about 500. degree. to 850. degree. C. The oxide is reduced by the contact and coproduct water is formed. A reducible oxide of bismuth is regenerated by oxidizing the reduced composition with molecular oxygen. The oxide Bi. sub. 2 O. sub. 3 is a particularly effective solid synthesizing agent.

US Patent:

46652604, May 12, 1987

Filed:

Dec 19, 1985

Appl. No.:

6/811129

Inventors:

C. Andrew Jones - Newtown Square PA
John J. Leonard - Springfield PA
John A. Sofranko - Malvern PA

Assignee:

Atlantic Richfield Company - Los Angeles CA

International Classification:

C07C 200

US Classification:

585500

Abstract:

A continuous method for synthesizing hydrocarbons from a methane source which comprises contacting methane with moving beds of particles comprising an oxidative synthesizing agent under synthesis conditions wherein particles recirculate between two physically separate zones: a methane contact zone and an oxygen contact zone.

US Patent:

44685238, Aug 28, 1984

Filed:

Jun 16, 1982

Appl. No.:

6/388855

Inventors:

John J. Leonard - Springfield PA
John A. Sofranko - West Chester PA

Assignee:

Atlantic Richfield Company - Los Angeles CA

International Classification:

C07C 6736

US Classification:

560204

Abstract:

Synthesis of dialkyl oxalates by the oxidative carbonylation of liquid monohydric saturated alcohols of from 1 to 20 carbon atoms with carbon monoxide and oxygen or an oxygen-containing gas in the presence of a catalytic amount of a catalyst comprising palladium or a salt thereof in combination with vanadium in the oxide (V. sub. 2 O. sub. 5, V. sub. 2 O. sub. 4, V. sub. 2 O. sub. 3) form and titanium or a non-hydrolyzable salt thereof, said catalyst being present in a heterogeneous phase.