反应详情

温度

60 °C

A Cu containing catalyst was prepared by ion-exchange with copper acetate. A copper (II) acetate monohydrate solution was prepared by dissolving 47.9 g of the copper salt in 800 L of deionized water at 60° C. 200 g of the NH4-form described in comparative example 2.1 was then added to this solution. An ion-exchange reaction between the NH4-form of the zeolite described in comparative example 2.1 and the copper ions was carried out by agitating the slurry at 60° C. for 1 hour. The pH was between 5 and 5.3 during the reaction. The resulting mixture was then filtered, washed until the filtrate had a conductivity of <200 μScm−1, which indicated that substantially no soluble or free copper remained in the sample, and the washed sample was dried at 90° C. The obtained Cu catalyst comprised CuO at 3.4% by weight and Na2O at less than 100 ppm. The SiO2:Al2O3 was 29.

1. additionwas then added to this solution
2. customThe pH was between 5 and 5.3 during the reaction
3. filtrationThe resulting mixture was then filtered
4. washwashed until the filtrate
5. customthe washed sample was dried at 90° C