James R Kittrell

US Patent:

6464951, Oct 15, 2002

Filed:

Apr 20, 2002

Appl. No.:

09/553627

Inventors:

James R. Kittrell - Amherst MA
David A. Gerrish - South Deerfield MA
Michael C. Milazzo - Montaque MA

Assignee:

KSE, Inc. - MA

International Classification:

C01B 700

US Classification:

423240R, 423240 S, 502305, 502306, 502307, 502308, 502309, 502313, 502319, 502321, 502344, 502345, 502349, 2041582, 2041573, 20415748, 20415715, 20415821, 210748

Abstract:

In accordance with the present invention, a catalyst is described which comprises at least one metal selected from the group consisting of copper, zinc, iron, tungsten, molybdenum, and chromium distributed over a catalyst support comprising a material containing at least one of silicon, titanium, zirconium, magnesium, aluminum, and activated carbon. The catalyst is used to remove phosgene from a contaminated gas stream and/or reduce or eliminate phosgene from an effluent of a previously treated gas stream. At least one metal in the catalyst of the present invention is preferably present in an amount from about 0. 001 wt % to about 15 wt %. When more than one metal is present, the combined metals preferably do not exceed 20 wt %. Catalysts in accordance with the present invention may be used as Photocatalysts. Processes for using the catalysts and Photocatalysts of the present invention are also described.

US Patent:

6596664, Jul 22, 2003

Filed:

Mar 21, 2002

Appl. No.:

10/104308

Inventors:

James R. Kittrell - Amherst MA
David A. Gerrish - South Deerfield MA
Michael C. Milazzo - Montaque MA

Assignee:

KSE, Inc. - Sunderland MA

International Classification:

B01J 2300

US Classification:

502182, 502183, 502242, 502254, 502309, 502318, 502319, 502321, 502326, 502329, 502331, 502338, 502339

Abstract:

In accordance with the present invention, a catalyst is described which comprises at least one metal selected from the group consisting of copper, zinc, iron, tungsten, molybdenum, and chromium distributed over a catalyst support comprising a material containing at least one of silicon, titanium, zirconium, magnesium, aluminum, and activated carbon. The catalyst is used to remove phosgene from a contaminated gas stream and/or reduce or eliminate phosgene from an effluent of a previously treated gas stream. At least one metal in the catalyst of the present invention is preferably present in an amount from about 0. 001 wt % to about 15 wt %. When more than one metal is present, the combined metals preferably do not exceed 20 wt %. Catalysts in accordance with the present invention may be used as photocatalysts. Processes for using the catalysts and photocatalysts of the present invention are also described.

US Patent:

7348288, Mar 25, 2008

Filed:

Oct 6, 2000

Appl. No.:

09/684173

Inventors:

James R. Kittrell - Amherst MA, US

Assignee:

KSE Inc. - Sunderland MA

International Classification:

B01J 31/00
B01J 21/08
B01J 23/42
B01J 23/43

US Classification:

502102, 502242, 502254, 502305, 502309, 502313, 502339, 502350

Abstract:

A process comprises passing a contaminated gaseous stream through a photocatalytic stage and, thereafter, through a catalytic stage.

US Patent:

40804267, Mar 21, 1978

Filed:

Apr 11, 1977

Appl. No.:

5/786144

Inventors:

James R. Kittrell - Amherst MA
Donald L. Herman - Yardley PA

Assignee:

New England Power Service Company - Westborough MA
Northeast Utilities Service Company - Newington CT

International Classification:

B01J 800
C01B 2100

US Classification:

423239

Abstract:

Base metal catalysts are pretreated with selenium, sulfur or sulfur compounds. Subsequently, a gaseous stream comprising nitric oxide, oxygen and ammonia is passed over the pretreated catalysts. The nitric oxide is reduced to nitrogen and no nitrous oxide is formed.

US Patent:

51891220, Feb 23, 1993

Filed:

Jul 13, 1992

Appl. No.:

7/912743

Inventors:

James R. Kittrell - Amherst MA
Charles W. Quinlan - Amherst MA

Assignee:

KSE Inc. - Sunderland MA

International Classification:

C08F 200

US Classification:

526 77

Abstract:

A copolymer of maleic anhydride and an alkyl vinyl ether is prepared with substantially reduced benzene content by first contacting the alkyl vinyl ether with activated charcoal and then reacting together the charcoal treated alkyl vinyl ether and maleic anhydride in the presence of a free radical initiator.

US Patent:

61799718, Jan 30, 2001

Filed:

Apr 30, 1999

Appl. No.:

9/303529

Inventors:

James R. Kittrell - Amherst MA
David A. Gerrish - Amherst MA

Assignee:

KSE, Inc. - Sunderland MA

International Classification:

C07B 6300

US Classification:

2041582

Abstract:

A process and apparatus for the oxidation of gaseous contaminants for the control of air pollution, comprises a two stage process comprising a photolytic stage followed by a photocatalytic stage.

US Patent:

40899306, May 16, 1978

Filed:

Feb 12, 1976

Appl. No.:

5/657541

Inventors:

James R. Kittrell - Amherst MA
Donald L. Herman - Yardley PA

Assignee:

New England Power Service Company - Westborough MA
Northern Utilities Service Company - Newington CT

International Classification:

B01J 800
C01B 2100

US Classification:

423239

Abstract:

Base metal catalysts are pretreated with selenium, sulfur or sulfur compounds. Subsequently, a gaseous stream comprising nitric oxide, oxygen and ammonia is passed over the pretreated catalysts. The nitric oxide is reduced to nitrogen and no nitrous oxide is formed.

US Patent:

44735359, Sep 25, 1984

Filed:

Oct 16, 1981

Appl. No.:

6/312169

Inventors:

James R. Kittrell - Amherst MA
Donald L. Herman - Coventry RI

Assignee:

Northeast Utilities Service Company - Hartford CT
New England Power Service Company - Westborough MA

International Classification:

B01J 800
C01B 2100

US Classification:

423239

Abstract:

A process for reducing nitric oxide with ammonia in the presence of a copper-exchanged mordenite catalyst at a temperature between about 300. degree. F. and 800. degree. F.