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Hydrogenation catalysts and process for the removal of aldehydes and ketones from gaseous streams rich in carbon monoxide

  • US 3,925,490 A
  • Filed: 07/13/1970
  • Issued: 12/09/1975
  • Est. Priority Date: 07/15/1969
  • Status: Expired due to Term
First Claim
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1. IN A PROCESS FOR THE REMOVAL OF ALKANALS AND ALKANONS HAVING 3 TO 8 CARBON ATOMS FROM GASEOUS STREAMS OBTAINED IN THE OXO PROCESS RICH WITH ABOUT 5 TO 95 PERCENT BY VOLUME OF HYDROGEN, ABOUT 5 TO 60 PERCENT BY VOLUME OF CARBON MONOXIDE AND ABOUT 5 TO 60 GRAMS OF SAID ALKANALS AND ALKANONES PER CUBIC METER AT NORMAL CONDITIONS, THE IMPROVEMENT COMPRISING HYDROGENATING SAID ALDEHYDES AND KETONES TO ALKANOLS AT A TEMPERATURE OF ABOUT 100* TO 200*C, A PRESSURE OF ABOUT 3 TO 50 ATMOSPHERES AND IN THE PRESENCE OF A SUPPORTED METAL CATALYST COMPIRISNG 100 PARTS SUPPORT MATERIAL BY WEIGHT, ABOUT 5 TO 100 PARTS BY WEIGHT OF COPPER AND ABOUT 0.5 TO 50 PERCENT BY WEIGHT OF CHROMIUM BASED ON THE WEIGHT OF THE COPPER, SAID SUPPORTED METAL CATALYST IS PREPARED BY PRECIPITATING SALTS OF THE COPPER AND CHROMIUM FROM SOLUTION, DRYING THE PRECIPITATED MATERIAL AND REDUCING THE SALTS IN A HYDROGEN STREAM AT AN ELEVATED TEMPERATURE OF ABOUT 100* TO 300*C.

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