A kind of biodiesel magnetic solid base catalyst and its preparation method and application
A solid base catalyst, biodiesel technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, organic compounds/hydrides/coordination complex catalysts, etc., can solve problems such as waste and catalyst loss, and achieve simplified production Process, good catalytic activity, strong magnetic effect
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Embodiment 1
[0054] A method for preparing a biodiesel magnetic solid base catalyst, comprising the steps of:
[0055] (1) According to Fe(NO 3 ) 3 9H 2 O: H 3 BTC: deionized water = 1:0.67:197 molar ratio, Fe(NO 3 ) 3 9H 2 After O was added to deionized water, it was stirred for 10 min under the condition of heating in a water bath at 60°C, and then H was added. 3 BTC, continue stirring for 60min;
[0056] (2) Pour the mixed material finally obtained in step (1) into a hydrothermal reaction kettle, and then heat it at 160°C for 15 hours, separate the solid, and set aside
[0057] (3) Measure 200 mL of DMF to wash the solid obtained in step (2), stir in a water bath (80° C.) for 1 h, and then centrifuge at a speed of 3500 r / min in a centrifuge to obtain a washed solid;
[0058] (4) Add the once-washed solid obtained in step (3) to the mixed liquid of 200mL ethanol and 200mL deionized water, stir in a water bath (60°C) for 3h, and then centrifuge at a speed of 3500r / min for 10min in...
Embodiment 2
[0064] A method for preparing a biodiesel magnetic solid base catalyst, comprising the steps of:
[0065] (1) According to FeCl 3 :H 3 BTC: deionized water = 1:1:200 molar ratio, FeCl 3 After adding deionized water, stir for 15 min under the condition of heating in a water bath at 60°C, and then add H 3 BTC, continue stirring for 30min;
[0066] (2) Pour the mixed material finally obtained in step (1) into a hydrothermal reaction kettle, and then heat it at 150°C for 13 hours, separate the solid, and set aside
[0067] (3) Measure 200 mL of DMF to wash the solid obtained in step (2), stir in a water bath (70° C.) for 70 min, and then centrifuge at a speed of 3500 r / min in a centrifuge to obtain a washed solid;
[0068] (4) Add the once-washed solid obtained in step (3) to a mixed liquid of 200mL ethanol and 200mL deionized water, stir in a water bath (65°C) for 2.5h, and then centrifuge at a speed of 3500r / min in a centrifuge 10min, remove the supernatant to obtain the se...
Embodiment 3
[0074] A method for preparing a biodiesel magnetic solid base catalyst, comprising the steps of:
[0075] (1) According to Fe(NO 3 ) 3 9H 2 O: H 3 BTC: deionized water = 1:1:210 molar ratio, Fe(NO 3 ) 3 9H 2 After O was added to deionized water, it was stirred for 15 min under the condition of heating in a water bath at 60°C, and then H was added. 3 BTC, continue stirring for 28 minutes;
[0076] (2) Pour the mixed material finally obtained in step (1) into a hydrothermal reaction kettle, and then heat it at 155°C for 13 hours, separate out the solid, and set aside
[0077] (3) Measure 220 mL of DMF to wash the solid obtained in step (2), stir in a water bath (90° C.) for 45 min, and then centrifuge at a speed of 3500 r / min in a centrifuge to obtain a solid;
[0078] (4) Add the once-washed solid obtained in step (3) to the mixed liquid of 200mL ethanol and 200mL deionized water, stir in a water bath (50°C) for 3.5h, and then centrifuge at a speed of 3500r / min in a cen...
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