Alumina carrier containing compound zeolite and preparation method thereof
A technology of alumina carrier and composite zeolite, applied in catalyst carrier, chemical instrument and method, catalyst activation/preparation, etc., to achieve the effects of lowering freezing point, increasing cetane number, and improving aromatic ring-opening ability
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Examples
Embodiment 1
[0032] Preparation of modified Y zeolite Y-A:
[0033] (1) Treat Y zeolite at 0.1MPa and 550℃ water vapor for 1 hour to obtain superhydrophobic Y zeolite YW; among them, Y zeolite is produced by Wenzhou Catalyst Factory, and its properties are as follows: silicon-aluminum molar ratio (chemical method) 10.01, unit cell Constant 2.448nm, Na 2 The O content is 0.05wt%, and the dry basis is 75wt%.
[0034] (2) Put 300 grams of superhydrophobic Y zeolite in 1000 ml of water, stir and raise the temperature to 60°C.
[0035] (3) Mix 181g nickel nitrate and 29g cobalt nitrate into 240ml solution, add ammonia water to the above zeolite solution, control the pH value to 6, after adding, the solution ages for 2 hours, filtered, and dried at 110°C for 8 hours. Obtained, recorded as YA, and its physical and chemical properties are shown in Table 1.
Embodiment 2
[0037]Preparation of modified Y zeolite Y-B:
[0038] Step (1) is the same as in Example 1;
[0039] Step (2) Put 300 g of superhydrophobic Y zeolite in 1500 ml of water, stir and raise the temperature to 80°C, and add 97.8 g of ferric nitrate and stir evenly.
[0040] Step (3) Mix 360g of nickel nitrate and 62g of cobalt nitrate into a 200ml solution, and add ammonia to the above zeolite solution to control the pH to 5. After the addition, the solution will age for 2 hours. After filtering, dry at 110°C. Manufactured in hours, recorded as YB, and its physical and chemical properties are shown in Table 1.
Embodiment 3
[0042] Preparation of modified Y zeolite Y-C:
[0043] Step (1) Take 100kg NaY zeolite (product of Wenzhou Catalyst Factory, 50% dry basis), crush it to less than 20 mesh, and use 800 liters of NH containing 120Kg 4 NO 3 Stir the solution at 70-75℃ for 2 hours, repeat this exchange step 10 times, filter, and wash with water until it is neutral to obtain Na 2 Y zeolite with an O content of 0.19 wt% is dried. The above-mentioned water-washed and dried zeolite is put into a high-pressure rotary furnace, and the temperature is rapidly raised to 650° C., and then roasted at 0.1 Mpa and 100% water vapor pressure for 2 hours to obtain the superhydrophobic Y zeolite Y-C of the present invention. Its properties are as follows: silicon to aluminum molar ratio (chemical method) 11.2, unit cell constant 2.448nm, Na 2 The O content is 0.05wt%, and the dry basis is 75wt%.
[0044] Step (2) Put 400 grams of the above superhydrophobic Y zeolite in 1600 ml of water, and stir and raise the temperat...
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Abstract
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