A method of using magnetic carbon to support acid and base to catalyze waste cooking oil to produce biodiesel
A technology for biodiesel and catering waste oil, applied in the field of waste recycling, can solve the problems of large waste liquid output and difficult catalyst recovery, and achieve the effect of reducing the production amount
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0025] (1) Preparation of magnetic carbon: take a certain amount of ferric salt and dissolve it in deionized water, and configure a solution with a ferric salt concentration of 10% to 25%; place the sawdust in the ferric salt solution after being pulverized; three The mass ratio of valent iron salt to sawdust is 4:1-10:1; the sawdust is soaked in ferric salt solution for 30-120 minutes and vacuum filtered, and the filter cake is dried to constant weight at 60°C; The dried filter cake was put into an alumina crucible and placed in a high-temperature tube furnace under N 2 Under protection, heat up to 550-900°C at a rate of 2-20°C / min, and keep it warm for 30-120min to prepare crude magnetic carbon; wash the crude magnetic carbon with deionized water to remove impurities, and the solid-to-liquid ratio is 1: 10~1:200; the magnetic carbon obtained by washing is dried at 105°C to obtain the finished magnetic carbon;
[0026] (2) Preparation of magnetic solid acid: magnetic carbon ...
Embodiment 1
[0031] Crude biodiesel was prepared by the method described above. Specifically:
[0032] (1) The preparation of magnetic carbon: After the sawdust powder is crushed through a 200 mesh sieve, it is mixed with 20% Fe(NO 3 ) 3 The mass ratio is 1:4 and its solution is immersed for 60min under the action of magnetic stirring. After the impregnation is completed, the solid-liquid separation is carried out by a vacuum filter, and the filter cake is placed in an evaporating dish and placed in an oven, and dried at 60°C until it reaches a constant weight. The filter cake was put into a crucible and placed in a microwave pyrolysis furnace under N 2 Under protection, the temperature was raised to 700°C at a rate of 5°C / min, and kept for 60 minutes to obtain magnetic carbon; the product was washed with deionized water to remove impurities;
[0033] (2) Preparation of magnetic solid acid: Mix magnetic carbon and concentrated sulfuric acid at a solid-to-liquid ratio of 1:25, sulfonate a...
Embodiment 2
[0037] (1) The preparation of magnetic carbon: After the sawdust powder is crushed through a 100-mesh sieve, it is mixed with 15% Fe(NO 3 ) 3 The mass ratio is 1:8 and its solution is immersed for 30min under the action of magnetic stirring. After the impregnation is completed, the solid-liquid separation is carried out by a vacuum filter, and the filter cake is placed in an evaporating dish and placed in an oven, and dried at 60°C until it reaches a constant weight. The filter cake was put into a crucible and placed in a microwave pyrolysis furnace under N 2 Under protection, the temperature was raised to 550°C at a rate of 5°C / min, and kept for 30 minutes to obtain magnetic carbon; the product was washed with deionized water to remove impurities;
[0038] (2) Preparation of magnetic solid acid: Mix magnetic carbon and concentrated sulfuric acid at a solid-to-liquid ratio of 1:15, sulfonate at 120°C for 10 hours, cool to room temperature, add the mixture to distilled water,...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More