Continuous reforming catalyst and preparation method and application thereof
A technology for reforming catalysts and catalysts, applied in chemical instruments and methods, physical/chemical process catalysts, naphtha catalytic reforming, etc., can solve problems such as low carbon deposition rate and increased catalyst carbon deposition rate, and achieve coke production Low efficiency, good reproducibility, good activity and stability
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Embodiment 1
[0057] Add 2 liters of water in the gel-forming tank, add dropwise sodium aluminate solution (industrial product, Sichuan Leshan Runhe Catalytic New Material Company, Na 2 O 150g / L, Al 2 o 3 100g / L) and aluminum sulfate solution (industrial product, Sichuan Leshan Runhe Catalytic New Material Company, Al 2 o 3 90g / L), and respectively control the dropping rate of sodium aluminate solution and aluminum sulfate solution, so that the pH of the material is kept in the range of 8.5 to 9.5, add about 0.9 liter of sodium aluminate and 0.82 liter of aluminum sulfate. After filtering and washing with water, add 13 milliliters of dilute nitric acid (chemically pure reagent, Beijing Chemical Plant, 1:1 volume) to acidify with 0.3 liters of water after acidifying for 1 hour, and add a predetermined amount of stannous chloride (chemically pure reagent, Beijing Chemical plant) and the hydrochloric acid solution (chemically pure reagent, Beijing chemical plant) of lanthanum chloride (ch...
Embodiment 2
[0069] This example is combined with Example 1 to illustrate the effect of coating the protective layer on the performance of the catalyst.
[0070] The catalyst was prepared according to the method of Example 1, except that the catalyst pellet coating step was omitted, and drying and water chlorine activation were carried out under the same conditions to obtain the catalyst of Example 2. The quality of each component relative to dry alumina is: platinum 0.25%, tin 0.25%, lanthanum 0.10, chlorine 1.15%; its pore volume is 0.80 ml / g, and its specific surface area is 252 m 2 / g, bulk density 0.65 g / ml, catalyst average particle size 1.2mm.
Embodiment 3
[0072] This example is combined with Example 1 to illustrate the effect of changes in rare earth components on the performance of the catalyst of the present invention in actual use.
[0073] The catalyst was prepared according to the method of Example 1, except that the rare earth lanthanum chloride solution was not added during the preparation process, and drying and water chlorine activation were carried out under the same conditions to obtain the catalyst of Example 3. The quality of each component relative to dry alumina is: platinum 0.25%, tin 0.25%, chlorine 1.22%; its pore volume is 0.72 ml / g, and its specific surface area is 244 m 2 / g, bulk density 0.67 g / ml, catalyst average particle size 1.21 mm.
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