公开(公告)号：US3755550A

公开(公告)日：1973-08-28

申请号：US3755550D

申请日：1971-08-02

Applicant: DU PONT

Inventor： STILES A

IPC: C01B17/04 ,  C01B17/16

CPC classification number: C01B17/0478 ,  C01B17/0486 ,  C01B17/164

Abstract: THIS INVENTION RELATES TO THE INITIAL CATALYTIC REDUCTION OF SULFUR DIOXIDE TO HYDROGEN SULFIDE WITH A REDUCING GAS WHEREIN THE CATALYTIC MATERIAL IS ON A SUPPORT AND THE MATERIAL IS A COMBINATION OF (1) ALKALINE EARTH MOLYBDATES AND (2) A CHROMITE SELECTED FROM THE GROUP OF THE CHROMITES OF COBALT, MANGANESE, COPPER, CERIUM, OR A MIXTURE OF THE RATE EARTHS CONTAINING AT LEAST 30% CERIUM. SPACE VELOCITIES OF AT LEAST 500 UP TO OVER 4000 HR.-1 AT LIGHT-OFF TEMPERATURES OF LESS THAN 540*C. WITH THE GASES REACHING EQUILIBRIUM ARE PRACTICAL.

公开(公告)号：US3794588A

公开(公告)日：1974-02-26

申请号：US3794588D

申请日：1971-09-23

Applicant: DU PONT

Inventor： STILES A

IPC: B01D53/86 ,  B01J23/34 ,  B01J23/66 ,  B01J23/75 ,  B01J23/755 ,  B01J23/80 ,  B01J37/02 ,  B01J37/03 ,  B01J11/06 ,  B01J11/08 ,  B01J11/22

CPC classification number: B01J37/0215 ,  B01D53/8656 ,  B01J23/34 ,  B01J23/66 ,  B01J23/75 ,  B01J23/755 ,  B01J23/80 ,  B01J37/0226 ,  B01J37/03

Abstract: HIGHLY-ACTIVE SUPPORTED CATALYST ARE PREPARED BY SLURRYING A FINELY DIVIDED FORM OF THE CATALYTIC MATERIAL IN A SOLUTION OF THE NITRATE SALT OF THE METAL OF THE CATALYTIC MATERIAL, APPLYING THE SLURRY TO A SUPPORT, PARTICULARLY ONE HAVING A SMOOTH SURFACE, DRYING AND CALCINING. IN A PREFERRED ASPECT, THE SUPPORTED CATALYST ALSO CONTAINS INTERSEPERSANTS TO STABILIZE THE CATALYST FROM CRYSTAL GROWTH AT HIGH TEMPERATURES.

公开(公告)号：US3752774A

公开(公告)日：1973-08-14

申请号：US3752774D

申请日：1971-06-07

Applicant: DU PONT

Inventor： STILES A

IPC: B01J23/83 ,  C07C209/48 ,  B01J11/06

CPC classification number: B01J23/83 ,  C07C209/48

Abstract: THE ACTIVITY OF COBALT, NICKEL OR IRON OXIDE CATALYSTS IS IMPROVED IF THE CATALYST CONTAINS A PROMOTER, 0.110% ZIRCONIA OR 0.1-5% CERIA, AND THE CATALYST IS PREPARED BY BEING PRECIPITATED FROM A SOLUTION HAVING A PH BELOW 7.35. FURTHER IMPROVEMENTS IN ACTIVITY ARE OBTAINED IF THE ZIRCONIA OR CERIA PROMOTED CATALYST ALSO CONTAINS 0.08-1% OF SILICA AS A CO-PROMOTER.

公开(公告)号：US3789019A

公开(公告)日：1974-01-29

申请号：US3789019D

申请日：1971-12-27

Applicant: DU PONT

Inventor： STILES A

IPC: B01D53/50 ,  B01D53/86 ,  B01J23/22 ,  C01B17/79 ,  B01J11/06 ,  B01J11/22

CPC classification number: B01D53/8609 ,  B01D53/50 ,  B01J23/22 ,  C01B17/79

Abstract: THIS INVENTION RELATES TO A PROCESS FOR PREPARING A CATALYTIC MATERIAL HAVING HIGH EFFICENCY IN THE OXIDATING OF SO2 RO SO3 WHICH ENTAILS PREPARING A HOMOGENEOUS MIXTURE COMPRISING A CATALYRICALLY EFFECTIVE AMOUNT OF A PRIMARY CATALYTALYTIC MATERIAL SELECTED FROM THE GROUP OF CSVO3 OR RBVO3, A PROMOTER, AND A CARRIER MATERIAL COMPRISING DIATOMACEOUS EARTH; AND THEN DRYING THE MIXTURE TO PROVIDE THE CATALYST.

公开(公告)号：BR6790947D0

公开(公告)日：1973-12-26

申请号：BR19094767

申请日：1967-06-30

Applicant: DU PONT

Inventor： STILES A

公开(公告)号：ZA7607307B

公开(公告)日：1977-10-26

申请号：ZA7607307

申请日：1976-12-08

Applicant: DU PONT

Inventor： STILES A ,  ENGLAND D

IPC: C07C47/22 ,  B01J21/00 ,  C07B61/00 ,  C07C45/00 ,  C07C45/35 ,  C07C45/37 ,  C07C45/38 ,  C07C57/055 ,  C07C67/00 ,  C07C

CPC classification number: C07C253/24 ,  C07C45/35 ,  C07C45/38 ,  Y02P20/52 ,  C07C47/22 ,  C07C255/08 ,  C07C255/03

公开(公告)号：SE347285B

公开(公告)日：1972-07-31

申请号：SE975467

申请日：1967-06-29

Applicant: DU PONT

Inventor： STILES A

IPC: C11D3/02

公开(公告)号：ZA7503997B

公开(公告)日：1976-09-29

申请号：ZA7503997

申请日：1975-06-23

Applicant: DU PONT

Inventor： STILES A

IPC: B01J23/86 ,  B01J37/03 ,  C07B61/00 ,  C07C1/00 ,  C07C1/02 ,  C07C9/04 ,  C07C67/00 ,  C10K3/02 ,  C10K3/04 ,  B01J

CPC classification number: C10K3/04 ,  B01J23/866 ,  B01J37/03 ,  C07C1/02 ,  C07C2523/26 ,  C07C2523/755 ,  C07C2523/86 ,  C07C9/04

公开(公告)号：BR6801815D0

公开(公告)日：1973-01-04

申请号：BR20181568

申请日：1968-08-27

Applicant: DU PONT

Inventor： STILES A ,  JATES P

IPC: F23D14/18 ,  A47J36/02 ,  B01D53/86 ,  B01J35/00 ,  B01J35/02 ,  B01J37/02 ,  B05D5/00 ,  B32B15/04 ,  C09D1/02 ,  C11D3/00 ,  C23C26/00 ,  C23D5/00 ,  F24C14/00

Abstract: The coating has a porosity >15% by volume and contains 40-80% by wt of oxidation catalyst; at least 10% by wt of alkaline (Na or K) silicate and a filler such as silica, zinc silicate or zinc aluminate. The oxidation catalyst is selected from the oxo- cmpds. of Zr, T1, V, Cr, Mn, Fe or Ni. The oxidation catalyst has a specific surface area of at least 10.0 m2/g.

公开(公告)号：ZA767307B

公开(公告)日：1977-10-26

申请号：ZA767307

申请日：1976-12-08

Applicant: DU PONT

Inventor： STILES A ,  ENGLAND D

IPC: C07C47/22 ,  B01J21/00 ,  C07B61/00 ,  C07C45/00 ,  C07C45/35 ,  C07C45/37 ,  C07C45/38 ,  C07C57/055 ,  C07C67/00 ,  C07C

Abstract: Acrylic products are produced in high yields by a catalytic process in which a vaporous mixture of 1-propanol and oxygen are contacted in rapid sequence with (1) a dehydration catalyst and (2) an oxidation catalyst.