Method for preparing hydrocarbon-rich biofuel oil by catalyzing deoxidation of grease
A technology of biofuel and catalytic grease, which is applied in the direction of chemical instruments and methods, biological raw materials, molecular sieve catalysts, etc., can solve the problems of product pollution, high price of noble metal catalysts, etc., and achieve high yield, low preparation cost, and mild reaction conditions Effect
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Embodiment 1
[0028] Preparation of catalyst NiMoRe / H-ZSM-5:
[0029] Nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 O), ammonium molybdate ((NH 4 ) 6 Mo 7 o 24 4H 2 O) and ammonium perrhenate (NH 4 ReO 4 ) is the desired inorganic salt, and H-ZSM-5 (Si / Al=25) is the carrier. Concrete synthetic steps:
[0030] (1) Ni(NO 3 ) 2 ·6H 2 O, (NH 4 ) 6 Mo 7 o 24 4H 2 O and NH 4 ReO 4 Dissolve in distilled water and stir to dissolve at 60°C. Next, under the environment of 60° C., the H-ZSM-5 carrier was added to the above salt solution. After stirring at 60°C for about 3.0h, the solvent was evaporated to obtain a catalyst precursor; wherein the Ni loading was 10wt%, the Re loading was 2wt%, and the Ni / Mo molar ratio was 1:1;
[0031] (2) The solid obtained above was dried at 100°C for 12h, and the dried solid was calcined at 400°C for 5.0h to obtain the catalyst NiMoRe / H-ZSM-5;
Embodiment 2
[0034] A method for preparing hydrocarbon-rich biofuel by catalyzing soybean oil deoxygenation, specifically:
[0035] 10 g of soybean oil and 3 g of the catalyst prepared in Example 1 were added into a 50 mL reactor, and the stirring rate was set at 1000 r / min. The reactor was purged 3 times with hydrogen to remove internal air, and then, the reactor was pressurized to 6.0 MPa. Turn on the heating switch, raise the temperature to 210°C, and keep it for 8.0h. After the reactor was cooled to room temperature, the liquid product after the reaction was analyzed and the catalyst was recovered. The yield of alkanes was about 83 wt%.
Embodiment 3
[0037] A method for preparing hydrocarbon-rich biofuel by catalyzing soybean oil deoxygenation, specifically:
[0038] 10 g of soybean oil and 3 g of the catalyst prepared in Example 1 were added into a 50 mL reactor, and the stirring rate was set at 1000 r / min. The reactor was purged 3 times with hydrogen to remove internal air, and then, the reactor was pressurized to 6.0 MPa. Turn on the heating switch, raise the temperature to 200°C, and keep it for 5.0h. After the reactor was cooled to room temperature, the liquid product after the reaction was analyzed and the catalyst was recovered. The yield of alkanes was about 72 wt%.
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