Method for preparing tripolyglycerol fatty acid ester by solid superacid catalysis
A technology of triglyceride and solid superacid, which is applied in chemical instruments and methods, fatty acid esterification, fatty acid chemical modification, etc., can solve the problems of low esterification rate and low product purity, and achieve low corrosion and high purity High, high yield effect
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Embodiment 1
[0030] Solid Superacid SO 4 2- / ZrO 2 -SiO 2 preparation of
[0031] The specific steps are: take zirconium oxychloride (ZrOCl 2 ·8H 2 O) Prepare 100g of 3% zirconium oxychloride solution, add 33.3g of diatomaceous earth, and let it stand for about 20 minutes to fully impregnate it. Then 25% concentrated ammonia water was added to adjust the pH to 8.5, and after standing for 4 hours, it was suction filtered and washed with distilled water for 3 times, and the obtained precipitate was dried in an oven at 80°C for 1 hour. After drying, 30 g was added to 300 g of 50 wt% sulfuric acid solution for immersion for 20 min, and then suction filtered again. Finally, the filter cake was dried in an oven at 80 °C for 0.5 h, and then transferred to a muffle furnace at 600 °C for 3 h to obtain SO 4 2- / ZrO 2 -SiO 2 Solid superacid catalyst.
[0032] Preparation of triglyceride: heat 10kg glycerin and 9g strong acidic cation exchange resin (D001SS macroporous strong acidic styrene...
Embodiment 2
[0035] Solid Superacid SO 4 2- / ZrO 2 -SiO 2 preparation of
[0036] The specific steps are: take zirconium oxychloride (ZrOCl 2 ·8H 2 O) Prepare 100g of 4% zirconium oxychloride solution, add 40g of diatomaceous earth, and let it stand for about 20 minutes to fully impregnate it. Then 28% concentrated ammonia water was added to adjust the pH to 9, and after standing for 5 h, it was suction filtered and washed with distilled water three times, and the obtained precipitate was dried in an oven at 80 °C for 1 h. After drying, 40 g was added to 800 g of 50 wt% sulfuric acid solution for immersion for 20 min, and then suction filtered again. Finally, the filter cake was dried in an oven at 80 °C for 0.5 h, and then transferred to a muffle furnace at 600 °C for 3 h to obtain SO 4 2- / ZrO 2 -SiO 2 Solid superacid catalyst.
[0037] Preparation of triglycerides: Heat 10kg of glycerin and 9g of strongly acidic cation exchange resin (D001SS macroporous strongly acidic styren...
Embodiment 3
[0040] Solid Superacid SO 4 2- / ZrO 2 -SiO 2 preparation of
[0041] The specific steps are: take zirconium oxychloride (ZrOCl 2 ·8H 2 O) Prepare 100g of 5% zirconium oxychloride solution, add 60g of diatomaceous earth, and let it stand for about 20 minutes to fully impregnate it. Then 28% concentrated ammonia water was added to adjust the pH to 8, and after standing for 5 h, it was suction filtered and washed with distilled water for 3 times, and the obtained precipitate was dried in an oven at 80 °C for 1 h. After drying, 60 g was added to 300 g of 50 wt% sulfuric acid solution for immersion for 20 min, and then suction filtered again. Finally, the filter cake was dried in an oven at 80 °C for 0.5 h, and then transferred to a muffle furnace at 600 °C for 3 h to obtain SO 4 2- / ZrO 2 -SiO 2 Solid superacid catalyst.
[0042] Preparation of triglycerides: Heat 10kg of glycerin and 9g of strongly acidic cation exchange resin (D001SS macroporous strongly acidic styren...
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