Solid base catalyst, method for preparing the same and applications
A solid base catalyst and carrier technology, applied in physical/chemical process catalysts, hydrogenolysis preparation, metal/metal oxide/metal hydroxide catalysts, etc. and other problems, to achieve the effect of simple separation and treatment, no three wastes, and high catalytic activity
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Embodiment 1
[0043] Take 100g γ-Al 2 o 3 (Wenzhou Jingjing Alumina Co., Ltd.), add 2g aluminum sol (Jiangyin Xiagang Chemical Factory) as a binder, add 10g Mg(OAc) 2 , mix and grind for 1 hour, add 0.5g Ca(OH) 2 , add 3g of polyacrylamide (Henan Luoshan Zhongyuan Polymer Co., Ltd., molecular weight 8 million to 10 million) as extrusion aid, continue mixing and grinding for 2 hours, add 20g of water, and extrude it into mm strips. Dry the product under infrared light for 5 hours, put it in an oven to dry at 100°C for 10 hours, and finally put it in a muffle furnace and bake it at 500°C for 4 hours to obtain a solid alkali catalyst. After cooling, put it in a desiccator for use.
[0044] In a reactor equipped with a rectifying column and a stirrer, add 130 g (1 mole) of ethyl acetoacetate, 102 g (1 mole) of acetic anhydride, and 3 g of the solid base catalyst prepared above, stir and maintain at 130 ° C for 16 During the reaction, the ethyl acetate generated during the reaction was dist...
Embodiment 2
[0047] Take 100g γ-Al 2 o 3 As a carrier, add 3g glycerin as a binder, add 5g MgO, mix and grind for 1 hour, add 0.5g KOH, add 3g polyacrylamide (Henan Luoshan Zhongyuan Polymer Co., Ltd., molecular weight 8 million to 10 million) as an extrusion aid agent, continue to mix and grind for 2 hours, add an appropriate amount of water, and extrude it into mm strips. The product was dried under an infrared lamp for 5 hours, put into an oven to dry at 120°C for 8 hours, and finally placed in a muffle furnace and roasted at 550°C for 4 hours to obtain the solid alkali catalyst, which was cooled and placed in a desiccator for later use.
[0048] In a reactor equipped with a rectifying column and a stirrer, add 130 grams (1 mole) of ethyl acetoacetate, 102 g (1 mole) of acetic anhydride, and 3 g of the solid base catalyst prepared above, stir and maintain at 130 ° C The reaction was carried out for 18 hours. At the same time, the ethyl acetate generated during the reaction was disti...
Embodiment 3
[0051] Take 100g γ-Al 2 o 3 , add 3g starch as binder, add 10g Mg(CO 3 ) 2 , mixing and grinding for 0.5 hours, adding 0.5g NaOH, adding 2g polyacrylamide (Henan Luoshan Zhongyuan Polymer Co., Ltd., molecular weight 8 million to 10 million) as extrusion aid, continuing mixing and grinding for 2 hours, adding an appropriate amount of water, using extrusion machine mm strips. The product was dried under an infrared lamp for 5 hours, put into an oven to dry at 100°C for 6 hours, and finally placed in a muffle furnace and roasted at 500°C for 3 hours to obtain the solid alkali catalyst, which was cooled and placed in a desiccator for later use.
[0052] In a reactor equipped with a rectifying column and a stirrer, add 130 grams (1 mole) of ethyl acetoacetate, 112 g (1.1 mole) of acetic anhydride, and 3 g of the solid base catalyst prepared above, stir and maintain at 130 ° C The reaction was carried out for 16 hours. At the same time, the ethyl acetate generated during the r...
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