公开(公告)号：MY134006A

公开(公告)日：2007-11-30

申请号：MYPI20010937

申请日：2001-03-01

Applicant: BASF AG

Inventor： DR ROLF PINKOS ,  DR FRANK STEIN ,  DR THOMAS N0XD6BEL ,  DR SYLVIA HUBER-DIRR ,  DR JOACHIM WULFF-DORING ,  DR ROLF-HARTMUTH FISCHER ,  DR STEPHAN ANDREAS SCHUNK

IPC: C07C29/136 ,  B01J21/18 ,  B01J23/656 ,  B01J23/89 ,  C07C29/14 ,  C07C29/145 ,  C07C29/147 ,  C07C29/17

Abstract: IN A PROCESS FOR PREPARING ALCOHOLS BY CATALYTIC HYDROGENATION OF CARBONYL COMPOUNDS OVER A CATALYST COMPRISING RHENIUM ON ACTIVATED CARBON, THE CATALYST USED COMPRISES RHENIUM (CALCULATED AS METAL) IN A WEIGHT RATIO TO THE ACTIVATED CARBON OF FROM 0.0001 TO 0.5, PLATINUM (CALCULATED AS METAL) IN A WEIGHT RATIO TO THE ACTIVATED CARBON OF FROM 0.0001 TO 0.5 AND, IF APPROPRIATE,AT LEAST ONE FURTHER METAL SELECTED FROM AMONG Zn, Cu, Ag, Au, Ni, Fe, Ru, Mn, Cr, Mo, W AND V IN A WEIGHT RATIO TO THE ACTIVATED CARBON OF FROM 0 TO 0.25, AND THE ACTIVATED CARBON HAS BEEN NONOXIDATIVELY PRETREATED. IT IS ALSO POSSIBLE TO PREPARE ETHERS AND LACTONES IF THE HYDROGEN PRESSURE IS NOT MORE THAN 2500 kPa (25 BAR). IN THIS CASE, THE ACTIVATED CARBON IN THE CATALYST MAY ALSO HAVE BEEN NONOXIDATIVELY PRETREATED.

公开(公告)号：MY126723A

公开(公告)日：2006-10-31

申请号：MYPI20002698

申请日：2000-06-14

Applicant: BASF AG

Inventor： HARALD RUST ,  THOMAS KRUG ,  DR FRANK STEIN ,  DR THOMAS N0XD6BEL

IPC: C07C27/00 ,  C07B61/00 ,  C07C27/26 ,  C07C29/149 ,  C07C31/18 ,  C07C31/20

Abstract: A PROCESS FOR PREPARING 1,6-HEXANEDIOL FROM A CARBOXYLIC ACID MIXTURE COMPRISING ADIPIC ACID, 6-HIDROXYCAPROIC ACID AND SMALL AMOUNTS OF 1,4- CYCLOHEXANEDIOLS WHICH IS OBTAINED AS BY-PRODUCT IN THE OXIDATION OF CYCLOHEXANE TO CYCLOHEXANONE/CYCLOHEXANOL AFTER WATER EXTRACTION OF THE REACTION MIXTURE FOLLOWED BY EXTRACTION WITH AQUEOUS SODIUM HYDROXIDE SOLUTION, BY ESTERIFICATION OF THE ACIDS AND HYDROGENATION COMPRISES A) LIBERATING THE CARBOXYLIC ACIDS FROM THE ALKALINE EXTRACT BY ADDITION OF A MINERAL ACID,B) FRACTIONATING THE ORGANIC PHASE COMPRISING CARBOXYLIC ACIDS TO GIVE A DISTILLATE COMPRISING THE LOW MOLECULAR WEIGHT MONOCARBOXYLIC ACIDS AND A RESIDUE COMPRISING ADIPIC ACID AND 6-HYDROXYCAPROIC ACID,C) REACTING THE MONOCARBOXYLIC AN DICARBOXYLIC ACIDS PRESENT IN THE AQUEOUS DICARBOXYLIC ACIDS MIXTURE WITH A LOW MOLECULAR WEIGHT ALCOHOL TO GIVE THE CORRESPONDING CARBOXYLIC ESTERS, D) FREEING THE ESTERIFICATION MIXTURE OBTAINED OF EXCESS ALCOHOL AND LOW BOILERS IN A FIRST DISTILLATION STEP,E) FRACTIONATING THE BOTTOM PRODUCT IN A SECOND DISTILLATION STEP TO GIVE AN ESTER FRACTION ESSENTIALLY FREE OF 1,4-CYCLOHEXANEDIOLS AND A FRACTION COMPRISING AT LEAST THE MAJOR PART OF THE 1,4-CYCLOHEXANEDIOLS, F) CATALYTICALLY HYDROGENATING THE ESTER FRACTION WHICH IS ESSENTIALLY FREE OF 1,4-CYCLOHEXANEDIOLS AND G) ISOLATING 1,6-HEXANEDIOL FROM THE HYDROGENATION PRODUCT IN A MANNER KNOWN PER SE IN A FINAL DISTILLATION STEP.FIG.1