Reforming catalyst and preparation method thereof
A reforming catalyst and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, naphtha catalytic reforming, etc., can solve the problems of polluting the atmosphere and the environment, forming acid rain, increasing catalyst production costs, etc.
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preparation example Construction
[0030] The preparation method of the reforming catalyst provided by the present invention comprises: contacting the metal component precursor solution with a carrier to obtain a catalyst precursor, and performing an activation treatment on the catalyst precursor and an activation medium, and the activation treatment makes the catalyst precursor The volatile substances in the medium are volatilized to obtain an activation atmosphere; wherein, the volatile substances include water and chlorine-containing substances; the activation medium does not contain chlorine-containing substances; and the water content in the catalyst precursor is 0.5% by weight Above, chlorine content is 0.1 weight% or more.
[0031] Described volatile substance is HCl, HClO and Cl 2 one or more of.
[0032] Preferably, the water content in the activation atmosphere is 0.1-10% by volume, the chlorine content is 0.01-5% by volume, more preferably, the water content in the activation atmosphere is 2-6% by v...
preparation example
[0063] This preparation example is used to illustrate the preparation method of alumina carrier.
[0064] (1) Preparation of alumina powder
[0065] In a reaction kettle with a volume of 25 liters, add 2.25 kg of isopropanol with a purity of 99.8%, and then put in 12 g of aluminum powder with a purity of 99.9% by mass and a particle size of 1.6mm-2.5mm. Block aluminum ingot 852g. Then purging the reaction system with nitrogen, then slowly warming up the reaction kettle to 70 degrees Celsius, about 8 minutes later, the reaction starts to initiate, and after the reaction is initiated, the temperature is maintained at 68°C-72°C, and 5.25kg of isopropanol is continuously added dropwise for 1 Hours, the dropwise addition is completed, continue to react at 70°C for 4 hours, the reaction is completed, and the temperature is lowered to 25°C to obtain aluminum isopropoxide.
[0066] The aluminum isopropoxide prepared above is hydrolyzed and aged to obtain alumina powder.
[0067] Hy...
Embodiment 1
[0072]Immerse the tin-containing γ-alumina spherical carrier obtained in the preparation example in a solution containing 0.2 g / mL of chloroplatinic acid and 0.3 g / mL of hydrochloric acid at 25 ° C for 12 hours, and continuously stir during the impregnation process. The catalyst precursor was placed in an oven at 120°C and dried for 12 hours. After drying, the water content of the catalyst precursor was 5% by weight, and the chlorine content was 2% by weight. figure 1 The activation treatment is carried out in the roasting furnace shown.
[0073] The roasting furnace includes a material roasting area 1 , a circulating fan 2 , an atmosphere regulating mechanism 3 , a tail gas discharge port 4 and a heating mechanism 5 . The circulation fan 2 is a frequency conversion fan, the atmosphere adjustment mechanism 3 is an air supply mechanism, and the heating mechanism 5 is an electric heating mechanism.
[0074] Put the catalyst precursor to be activated into the material roasting a...
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