Addison C Smith

US Patent:

49122703, Mar 27, 1990

Filed:

Dec 12, 1988

Appl. No.:

7/282545

Inventors:

Emery J. Carlson - Chatham NJ
John N. Armor - Morris Plains NJ
William J. Cunningham - Williamsville NY
Addison M. Smith - Amherst NY

Assignee:

Allied-Signal Inc. - Morris Township, Morris County NJ

International Classification:

C07C 1720

US Classification:

570169

Abstract:

Chromium(III) oxide and hydroxide aerogels are produced by the reaction of chromium(VI) oxide with a solvent which is reducing to chromium(VI), such as methanol, heating the solution to hypercritical conditions, and venting the solvent hypercritically. The product aerogels exhibit surface areas above 400 m. sup. 2 /g, pore volumes of at least 2 cm. sup. 3 /g and a substantially uniform pore size distribution. Also disclosed is a unique process which employs high pore volume, high surface area chromium(III) oxide or hydroxide as a fluorination catalyst. More particularly, reaction of C. sub. 2 Cl. sub. 3 F. sub. 3 with HF over these catalysts produced high yields of C. sub. 2 Cl. sub. 2 F. sub. 4 and C. sub. 2 ClF. sub. 5.

US Patent:

42987652, Nov 3, 1981

Filed:

Mar 26, 1980

Appl. No.:

6/134040

Inventors:

Jerry R. Cochran - Chatham NJ
Thomas H. Insinger - Philadelphia PA
Gerald E. Hollenbach - Feasterville PA
Ronald F. Piskorz - Cheektowaga NY
Addison M. Smith - Amherst NY

Assignee:

Allied Corporation - Morris Township, Morris County NJ

International Classification:

C07C 3776

US Classification:

568754

Abstract:

Phenol (10) produced by the cleavage of cumene hydroperoxide is chemically treated with a base (12) such as a polyamine, is optionally then treated with an acid or acid anhydride (15) such as phthalic anhydride, is then steamed distilled (12) to remove a lites fraction as a water azeotrope (21) and the bottoms (34) of the steam distillation are vacuum distilled (35) to recover high purity phenol (36) as an overhead. The overheads (21) of the steam distillation are condensed (22) and may be phase separated (23) into an aqueous phase (25) and organic phase (24), with the aqueous phase (25) mixed (26) with an organic solvent (27) which preferentially dissolves benzofuran impurities. This mixture is phase separated into an organic solvent phase (30, 130) and a recycle aqueous phase (31). Alternatively, the entire condensed overheads (21) may be extracted (146-151 and 153) with organic solvent. In some forms, the organic solvent phase (130) is washed with aqueous base (142) to remove phenol and impurities and the organic solvent (127) is regenerated for again mixing with the aqueous phase.

US Patent:

48288187, May 9, 1989

Filed:

Nov 23, 1987

Appl. No.:

7/124372

Inventors:

Emery J. Carlson - Chatham NJ
John N. Armor - Morris Plains NJ
William J. Cunningham - Williamsville NY
Addison M. Smith - Amherst NY

Assignee:

Allied-Signal Inc. - Morris Township, Morris County NJ

International Classification:

C01G 3702

US Classification:

423607

Abstract:

Chromium(III) oxide and hydroxide aerogels are produced by the reaction of chromium(VI) oxide with a solvent which is reducing to chromium(VI), such as methanol, heating the solution to hypercritical conditions, and venting the solvent hypercritically. The product aerogels exhibit surface areas above 400 m. sup. 2 /g, pore volumes of at least 2 cm. sup. 3 /g and a substantially uniform pore size distribution. Also disclosed is a unique process which employs high pore volume, high surface area chromium(III) oxide or hydroxide as a fluorination catalyst. More particularly, reaction of C. sub. 2 Cl. sub. 3 F. sub. 3 with HF over these catalysts produced high yields of C. sub. 2 Cl. sub. 2 F. sub. 4 and C. sub. 2 ClF. sub. 5.