Method for preparing reforming catalyst in platinum, stannum series
A reforming catalyst and catalyst technology, applied in reforming naphtha, catalytic reforming of naphtha, petroleum industry, etc., can solve problems such as unfavorable gasoline yield, increased device operating costs, and accelerated catalyst deactivation rate, etc. Achieve the effect of improving anti-carbon deposition ability, high activity and selectivity
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example 1
[0044] Preparation of Sn-containing γ-Al 2 o 3 carrier.
[0045] Prepare the carrier according to the method of example 1 in CN1150169A, get 100 grams of SB aluminum hydroxide powder (Germany, produced by Condea company) and an appropriate amount of deionized water, make the liquid / solid mass ratio 2.0, stir to make it slurry. Add the nitric acid of 1: 1 (volume ratio), its add-on is 7.5 milliliters / 100 gram SB powder, add the hydrochloric acid solution of 30 gram urea and predetermined amount of tin protochloride simultaneously, control the content of Sn in the solution respectively to be 0.30 mass %, 0.40 mass%, 0.50 mass% (all based on dry base alumina), stirred for 1 hour, then added 30 grams of kerosene and 3 grams of fatty alcohol polyoxyethylene ether and stirred for 1 hour, and then dripped it in the oil ammonia column Ball molding. The wet bulb was solidified in ammonia water for 1 hour, then filtered, rinsed with deionized water for 2 to 3 times, dried at 60°C for...
example 2
[0047] The spherical catalyst containing Pt and Sn is prepared by the method of the invention.
[0048] (1) Get 100 grams of carrier SA-1, and use stannous chloride and hydrochloric acid to make an impregnating solution for 0.5 hours, and the Sn content in the impregnating solution is 0.11% by mass, and the chlorine content is 10% by mass (calculated on a dry basis of alumina Benchmark), the liquid / solid mass ratio was 1.8 during impregnation. The impregnated solid was dried at 60°C for 6 hours, dried at 120°C for 10 hours, and then calcined at 650°C for 4 hours in an air containing 3% by mass of water vapor to obtain carrier SA-4 with a Sn content of 0.41% by mass (as dry base alumina as the basis for calculation).
[0049] (2) The Sn-containing carrier SA-4 prepared above is impregnated with a solution made of chloroplatinic acid and hydrochloric acid. Calculation basis), the impregnated liquid / solid mass ratio is 1.8. The impregnated solid was dried at 60°C for 6 hours, ...
example 3
[0051] Spherical catalysts containing Pt, Sn, Ce, Eu were prepared by step impregnation method.
[0052] (1) Get 100 grams of carrier SA-4, use europium chloride, cerous chloride and hydrochloric acid to make an impregnating solution for immersion for 12 hours, in the impregnating solution, the Eu content is 0.17 mass%, the Ce content is 0.10 mass%, and the chlorine content is 5.0% by mass (both based on dry basis alumina), and the liquid / solid mass ratio during impregnation is 1.6. The impregnated solid was dried at 60° C. for 6 hours, at 120° C. for 10 hours, and calcined at 600° C. for 4 hours in an air containing 3 mass % water vapor to obtain a carrier containing Sn, Eu and Ce.
[0053] (2) The carrier containing Sn and Eu, Ce is impregnated with chlorine-containing platinum acid and hydrochloric acid solution according to the method of example 2 (2), and catalyst C is obtained after water chlorine activation, and its composition is shown in Table 1.
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