A kind of ni-based diesel oil reforming catalyst and its preparation method and application
A technology for reforming catalysts and diesel oil, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low mass transfer efficiency, inability to synthesize active metal highly dispersed catalysts, etc. Quality efficiency, important market value and promotion value, and the effect of realizing continuous production
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[0028] The invention provides a kind of preparation method of Ni base diesel oil reforming catalyst, comprises the following steps:
[0029] In the membrane dispersion microreactor, the mixed salt solution of nickel salt, cerium salt and zirconium salt enters the main channel of the membrane dispersion microreactor as the continuous phase, and the ammonia solution enters the membrane dispersion microreactor as the dispersed phase After the microfiltration membrane is sheared, it is mixed with the continuous phase for co-precipitation reaction to obtain a slurry;
[0030] Aging and separating the slurry in sequence to obtain a catalyst precursor;
[0031] The catalyst precursor is sequentially dried, calcined and reduced to obtain a Ni-based diesel reforming catalyst;
[0032] In the cerium salt and zirconium salt, the molar ratio of Ce to Zr is (1-9):1, and in the nickel salt and cerium salt, the molar ratio of Ce to Ni is (1-10):1.
[0033] In the present invention, unless ...
Embodiment 1
[0056] The mixed salt solution of nickel nitrate, cerium nitrate and zirconium nitrate (total ion concentration is 0.2mol / L, Ce:Zr:Ni molar ratio 42:14:17) and ammonia solution (0.2mol / L) were charged into two In an Erlenmeyer flask, the membrane dispersion microreactor was placed in a water bath at 30°C, the mixed salt solution entered the main channel as a continuous phase (length 10mm, width and height 1mm), and the ammonia solution passed through the membrane dispersion microreactor as a dispersed phase. After the microfiltration membrane (pore size 5 μm) of the reactor is sheared, it is then mixed with the continuous phase in the main channel for co-precipitation reaction; wherein, the flow rate of the continuous phase is 10 mL / min, the flow rate of the dispersed phase is 40 mL / min, and the flow rate of the dispersed phase is 40 mL / min. Compared with the continuous phase 4, the slurry (pH value is 9.5) was obtained in 20min and collected in a beaker;
[0057] The slurry w...
Embodiment 2
[0059] The mixed salt solution of nickel nitrate, cerium nitrate and zirconium nitrate (total ion concentration is 0.4mol / L, Ce:Zr:Ni molar ratio 42:14:17) and ammonia solution (0.4mol / L) were charged into two In an Erlenmeyer flask, the membrane dispersion microreactor was placed in a water bath at 30°C, the mixed salt solution entered the main channel as a continuous phase (length 10mm, width and height 1mm), and the ammonia solution passed through the membrane dispersion microreactor as a dispersed phase. After the microfiltration membrane (pore size 5 μm) of the reactor is sheared, it is mixed with the continuous phase in the main channel to carry out coprecipitation reaction; wherein, the flow rate of the continuous phase is within the range of 10mL / min, and the flow rate of the dispersed phase is 40mL / min. Dispersed phase is compared with continuous phase 4, obtains slurry (pH value is 9.5) in 20min, is collected in the beaker;
[0060] The slurry was aged in a water bat...
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