Non-mercury catalyst for acetylene hydrochlorination and method of preparing the same

[0023] Example 1

[0024] 0.08 g of platinum chloride, 0.16 g of bismuth chloride, and 0.08 g of cerium chloride are dissolved in hydrochloric acid with a concentration of 2 mol/L, and the concentration of platinum chloride is 0.01 mol/L. Add the prepared impregnation solution to 16g of activated carbon carrier and impregnate for 5 hours at room temperature. Evaporate the moisture on a water bath at a temperature of 80°C, and dry the surface moisture in a room temperature oven at a temperature of 70°C for 2 hours. Then it was calcined in a muffle furnace at a temperature of 120°C for 12 hours, and then taken out and cooled for later use. In the reaction of the addition of hydrogen chloride to acetylene to produce vinyl chloride, the molar ratio of the reaction gas is C 2 H 2 /HCl=1/1.15, space velocity 500ml/(g.cata)·h -1 , The reaction was carried out at a reaction temperature of 110°C. The amount of catalyst is 16g, and the hydrogen chloride activation time is 0.5h. Analyzing the reaction tail gas, the conversion rate of acetylene is 97-99%, and the selectivity of vinyl chloride is ≥99%.

[0025] Example 2

[0026] 0.16 g of palladium chloride, 0.48 g of cuprous chloride, and 1.6 g of cerium chloride are dissolved in hydrochloric acid with a concentration of 3 mol/L, and the concentration of palladium chloride is 0.015 mol/L. Add the prepared impregnation solution to 16g of activated carbon carrier and impregnate for 5 hours at room temperature. Evaporate the moisture on a water bath at a temperature of 100°C, and dry the surface moisture in a room temperature oven at a temperature of 80°C for 3 hours. Then it was calcined in a muffle furnace at 140°C for 6 hours, then taken out and cooled for later use. In the reaction of the addition of hydrogen chloride to acetylene to produce vinyl chloride, the molar ratio of the reaction gas is C 2 H 2 /HCl=1/1.25, space velocity 500ml/(g.cata)·h -1 , The reaction was carried out at a reaction temperature of 120°C. The amount of catalyst is 16g, and the hydrogen chloride activation time is 1h. Analyzing the reaction tail gas, the conversion rate of acetylene is 97-98%, and the selectivity of vinyl chloride is ≥99%.

[0027] Example 3

[0028] 0.08 g of gold chloride and 0.8 g of cuprous chloride are dissolved in 2.5 mol/L hydrochloric acid, and the gold chloride concentration is 0.03 mol/L. Add the prepared impregnation solution to 16g of activated carbon carrier and impregnate for 10 hours at room temperature. Evaporate the moisture on a water bath at a temperature of 80°C, and dry the surface moisture for 3.5 hours in a room temperature oven at a temperature of 70°C. Then it was calcined in a muffle furnace at a temperature of 130°C for 8 hours, and then taken out and cooled for later use. In the reaction of the addition of hydrogen chloride to acetylene to produce vinyl chloride, the molar ratio of the reaction gas is C 2 H 2 /HCl=1/1.25, space velocity 1000ml/(g.cata)·h -1 , The reaction was carried out at a reaction temperature of 140°C. The amount of catalyst is 16g, and the hydrogen chloride activation time is 2h. The reaction tail gas is analyzed, and the conversion rate of acetylene is 95-96%, and the selectivity of vinyl chloride is ≥99%.