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Die Herstellung von Isopropanol (II) durch direkte Hydratisierung von Propylen (I) nach den Verfahren der Veba‐Chemie, der Deutschen Texaco und insbesondere der Tokuyama Soda wird ausführlich behandelt.

Summary:Tokuyama Soda has developed a new process for direct hydration of propylene to isopropanol in liquid phase. This process employs a highly active and selective catalyst system which essentially comprises an aqueous solution of polytungsten compounds within a selective pH range.The first commercial plant, having a capacity of 30,000 metric tons of isopropanol per annum, has been successfully in operation since the beginning of June 1972 at Tokuyama Soda Co., Ltd.The features of the process are simpleness, low value for propylene consumption and freedom from environmental pollution problems. These advantages make Tokuyama Process by far more economical than the conventional process for the manufacture of isopropanol.

Summary:Tokuyama Soda has recently developed a new process for manufacturing methylisobutyl ketone. This process is based on one-step conversion of acetone and hydrogen in vapor and liquid phases in a trickle reactor using a specially prepared bifunctional catalyst. The catalyst essentially comprises zirconium phosphate containing a small amount of finely and uniformly dispersed palladium metal. High catalytic activity and durability have been confirmed in continuous operations using a pilot plant having a capacity of 300kg a day.Besides the excellent durability of the catalyst, high productivity and simpleness of Tokuyama MI BK Process make it far more economical than the conventional process.

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