| abstract |
THE INVENTION RELATES TO A PROCESS FOR THE DEHYDROGENATION OF ALIPHATIC 1,2-DIOLS CONTAINING AT LEAST 3 CARBON ATOMS TO 1,2-KETONE ALCOHOLS IN THE GAS PHASE AT TEMPERATURE IN THE RANGE FROM 180 TO 280?C AND IN THE PRESENCE OF COPPER-CONTAINING CATALYSTS. TO ACHIEVE HIGHER SELECTIVITY, IT IS PROPOSED IN ACCORDANCE WITH THE INVENTION THAT THE DIOLS CONTAIN 5 TO 60% BY WEIGHT WATER, BASED ON THE TOTAL WEIGHT, AND THE TEMPERATURES BE IN THE RANGE FROM 190 TO 270?C. |