公开(公告)号：US3654182A

公开(公告)日：1972-04-04

申请号：US3654182D

申请日：1969-11-26

Applicant: UNIVERSAL OIL PROD CO

Inventor： HAYES JOHN C

IPC: B01J23/90 ,  B01J23/96 ,  B01J38/18 ,  B01J38/44 ,  C10G35/09 ,  B01J11/02 ,  B01J11/18 ,  B01J11/80

CPC classification number: B01J38/44 ,  B01J23/96 ,  C10G35/09

Abstract: A DEACTIVATED HYDROCARBVON CONVERSION CATALYST, WHICH IS A COMBINATION OF A PLATINUM GROUP COMPONENT, A GERMANIUM COMPONENT AND A HALOGEN COMPONENT WITH A POROUS CARRIER MATERIAL AND WHICH HAS BEEN DEACTIVATED BY A DEPOSITION OF CARBONACEOUS MATERIAL THEREON DURING A PREVIOUS CONTACTING WITH A HYDROCARBON CHARGE STOCK AT HYDROCARBON CONVERSION CONDITIONS, IS REGNERATED BY THE SEQUENTIAL STEPS OF: (1) BURNING CARBON FROM THE DEACTIVATED CATALYST AT A RELATIVELY LOW TEMPERATURE WITH A SUBSTANTIALLY SULFUR-FREE FIRST GASEOUS MIXTURE CONTAINING RELATIVELY SMALL AMOUNTS OF OXYGEN, H2O AND HC1; (2) TREATING THE RESULTING CATALYST AT A RELATIVELY HIGH TEMPERATURE WITH A SECOND GASEOUS MIXTURE CONTAINING O2, H2O AND HC1; (3) PURGING OXYGEN FROM CONTACT WITH THE RESULTING CATLYST; AND (4) REDUCING THE RESULTING CATALYST BY CONTACTING WITH A SUBSTANTIALLY SULFUR-FREE THIRD GASEOUS MIXTURE CONTAINING HYDROGEN AND SAMLL AMOUNTS OF H2O AND HC1. KEY FEATURES OF THE REGENERATION METHOD INVOLVE THE PRESENCE OF BOTH H2O AND HC1 IN THE GAGEOUS MIXTURES USED IN THE CARBON-BURNING, OXYGEN-TREATING AND REDUCTION STEPS, THE USE OF SULFUR-FREE GASEOUS MIXTURES IN ALL OF THESE STEPS, AND THE CAREFUL CONTROL OF THE MOLE RATIO OF H2O TO HC1 EMPLOYED IN EACH OF THESE GASEOUS MIXTURES.

公开(公告)号：US3652455A

公开(公告)日：1972-03-28

申请号：US3652455D

申请日：1970-04-17

Applicant: KNAPSACK AG

Inventor： BAADER HERBERT ,  OPITZ WOLFGANG ,  JACOBOWSKY ARMIN

IPC: B01J23/96 ,  G21C1/12 ,  B01J11/18

CPC classification number: B01J23/96 ,  G21C1/12 ,  G21Y2002/201 ,  G21Y2004/302

Abstract: A CATALYST COMPRISING METALLIC PALLADIUM DEPOSITED ON A SILICA GEL OR ACTIVE CARBON CARRIER FOR USE IN THE HYDRATION AND DECHLORINATION OF DICHLOROACETIC ACID AND/OR TRICHLOROACETIC ACID TO PRODUCE MONOCHLOROACETIC ACID AND/OR ACETIC ACID IS REGENERATED. TO THIS EFFECT, THE POISONED CATALYST IS SUBJECTED IN THE HYDRATION ZONE ITSELF AT TEMPERATURES OF BETWEEN 50 AND 200*C. TO TREATMENT WITH DRY CHLORINE GAS UNTIL IT IS SATURATED, AND THE HYDRATION ZONE IS EXHAUSTED UNDER A PRESSURE OF BETWEEN ABOUT 500 AND 750 MM. MERCURY.

公开(公告)号：US3578608A

公开(公告)日：1971-05-11

申请号：US3578608D

申请日：1968-09-24

Applicant: DU PONT

Inventor： AYKAN KAMRAN

IPC: B01D53/86 ,  B01J23/96 ,  B01J11/18 ,  B01J11/02

CPC classification number: B01J23/96 ,  B01D53/8628

Abstract: REGENERATING A DEACTIVATED PLATINUM CATALYST BY HEATING A PLATINUM OXIDE DEACTIVATED CATALYST ON A CARRIER AND PASSING GAS INERT IN THE SYSTEM UNDER CONDITIONS OF REGENERATION OVER THE DEACTIVATED CATALYST FOR A TIME AND AT A TEMPERATURE SUFFICIENT TO CAUSE DISSOCIATION OF A PLATINUM OXIDE AND REFORM PLATINUM IN METALLIC FROM ON THE CARRIER.