| 摘要 |
PURPOSE:To obtain the above mentioned catalyst having a high activity and also, not lowering the activity extending over a long period, by carrying the mixture of powdered anhydrous K compound and a specific amount of metallic Na on the carrier, such as Al2O3 or SiO2 etc. CONSTITUTION:Mixture of powdered anhydrous K compound (for example, K2CO3) having grain diameter of 1-100mum and Na of 0.1-30g atom against K 1g atom, is carried on the carrier, such as Al2O3 or SiO2 etc., having grain diameter of 1-100mm.. On this occasion, powdered anhydrous K compound of 0.5-10 parts, preferably 0.5-20 parts, especially 1-10 parts against the carrier of 100pts.wt., is carried on the carrier. Also, the amount of Na for the carrier is 0.1-20g atom, preferably 0.5-10g atom against the carrier of 100pts.wt. |
