Preparation method of gold-based catalyst for preparing vinyl chloride by acetylene hydrochlorination method
A technology of acetylene hydrochlorination and vinyl chloride, applied in catalyst activation/preparation, organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, etc., to reduce environmental pollution, low price, and improve performance. Effect
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Embodiment 1
[0040] (1) Dissolve 20g of hydrazine hydrate into 240g of deionized water to obtain an aqueous solution of hydrazine hydrate, impregnate the hydrazine hydrate solution onto 300g of activated carbon carrier by equal volume impregnation method, let stand at 50°C for 24 hours, and dry at 120°C to obtain Pretreated carrier;
[0041] (2) Dissolve 0.567 grams of chloroauric acid in a mixed solvent composed of 12 g of ethanol and 15 g of deionized water to obtain a chloroauric acid solution;
[0042] (3) Dissolve 0.848g of tryptophan in a mixed solvent composed of 8g of ethanol and 5g of deionized water to obtain a tryptophan solution;
[0043] (4) Under the condition of stirring at 10°C, fully mix the chloroauric acid solution and the tryptophan solution evenly, and after stirring for 24 hours, filter and separate the obtained sample, and then dry the filter cake at 50°C to obtain sample A;
[0044] (5) Dissolve 3g of sample A in 140g of ammonium sulfate aqueous solution with a mas...
Embodiment 2
[0046] (1) Dissolve 20g of hydrazine hydrate into 240g of deionized water to obtain an aqueous solution of hydrazine hydrate, impregnate the hydrazine hydrate solution onto 300g of activated carbon carrier by equal volume impregnation method, let stand at 50°C for 24 hours, and dry at 120°C to obtain Pretreated carrier;
[0047] (2) Dissolve 0.567 grams of chloroauric acid in a mixed solvent composed of 12 g of ethanol and 15 g of deionized water to obtain a chloroauric acid solution;
[0048] (3) Dissolve 0.848g of tryptophan in a mixed solvent composed of 8g of ethanol and 5g of deionized water to obtain a tryptophan solution;
[0049] (4) Under the condition of stirring at 10°C, fully mix the chloroauric acid solution and the tryptophan solution evenly, and after stirring for 24 hours, filter and separate the obtained sample, and then dry the filter cake at 50°C to obtain sample A;
[0050] (5) Dissolve 3g of sample A in 140g of ammonium sulfate aqueous solution with a mas...
Embodiment 3
[0052] (1) Dissolve 20g of hydrazine hydrate into 240g of deionized water to obtain an aqueous solution of hydrazine hydrate, impregnate the hydrazine hydrate solution onto 300g of activated carbon carrier by equal volume impregnation method, let stand at 50°C for 24 hours, and dry at 120°C to obtain Pretreated carrier;
[0053] (2) Dissolve 0.567 grams of chloroauric acid in a mixed solvent composed of 12 g of ethanol and 15 g of deionized water to obtain a chloroauric acid solution;
[0054] (3) Dissolve 0.848g of tryptophan in a mixed solvent composed of 8g of ethanol and 5g of deionized water to obtain a tryptophan solution;
[0055] (4) Under the condition of stirring at 10°C, fully mix the chloroauric acid solution and the tryptophan solution evenly, and after stirring for 24 hours, filter and separate the obtained sample, and then dry the filter cake at 50°C to obtain sample A;
[0056] (5) Dissolve 5g of sample A in 140g of ammonium sulfate aqueous solution with a mas...
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