Wendell Steven Elder

US Patent:

6235261, May 22, 2001

Filed:

Sep 14, 1999

Appl. No.:

9/396160

Inventors:

Mohamed H. Khan - Ft. Madison IA
James A. Cole - Ft. Madison IA
Timothy G. Bruhl - Wever IA
Wendell S. Elder - Keokuk IA
Gary A. Glasgow - Ft. Madison IA
Vijaykumar M. Wagh - Donnellson IA

Assignee:

Cyprus Amax Minerals Co. - Englewood CO

International Classification:

C01F 100
C01G 100
C01G 3900
C01G 4100
B01J 2300

US Classification:

423593

Abstract:

An isomer of ammonium octamolybdate ("AOM") and method for producing the same. A new AOM isomer ("X-AOM") is described which is characterized by a distinctive Raman spectral profile compared with other AOM isomers including. alpha. and. beta. -AOM. To produce the novel isomer, ammonium dimolybdate ("ADM") is combined with molybdenum trioxide (MoO. sub. 3) and water to yield a mixture. When mixing these materials, optimum results are achieved if at least one of the foregoing molybdenum-containing reagents is added in a gradual, non-instantaneous manner so that the selected reagent is not added to the mixture in a single large mass. This gradual delivery procedure, along with a carefully controlled prolonged heating stage (e. g. in excess of 3 hours) contributes to a maximum yield of high purity X-AOM.

US Patent:

59852364, Nov 16, 1999

Filed:

Jun 9, 1998

Appl. No.:

9/094194

Inventors:

Mohamed H. Khan - Ft. Madison IA
James A. Cole - Ft. Madison IA
Timothy G. Bruhl - Wever IA
Wendell S. Elder - Keokuk IA
Gary A. Glasgow - Ft. Madison IA
Vijaykumar M. Wagh - Donnellson IA

Assignee:

Cyprus Amax Minerals Company - Englewood CO

International Classification:

C01B 1314
C01G 1314
C01G 3900
B01J 2300

US Classification:

423592

Abstract:

A novel isomer of ammonium octamolybdate ("AOM") and method for producing the same. A new AOM isomer ("X-AOM") is described which is characterized by a distinctive Raman spectral profile compared with other AOM isomers including. alpha. and. beta. -AOM. To produce the novel isomer, ammonium dimolybdate ("ADM") is combined with molybdenum trioxide (MoO. sub. 3) and water to yield a mixture. When mixing these materials, optimum results are achieved if at least one of the foregoing molybdenum-containing reagents is added in a gradual, non-instantaneous manner so that the selected reagent is not added to the mixture in a single large mass. This gradual delivery procedure, along with a carefully controlled prolonged heating stage (e. g. in excess of 3 hours) contributes to a maximum yield of high purity X-AOM.