Heterogeneous catalyst based on deep-eutectic solvent and application thereof
A technology of heterogeneous catalysts and deep eutectic solvents, applied in physical/chemical process catalysts, organic compounds/hydrides/coordination complex catalysts, organic chemistry, etc., can solve problems such as by-product formation and achieve low production costs , The equipment is less corrosive, and the effect of improving product quality
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Embodiment 1
[0028] Preparation of Heterogeneous Catalysts Based on Deep Eutectic Solvents:
[0029] Preparation of hydrophilic DES: Weigh 117.15g (1mol) of betaine and 74.12g (1mol) of isobutanol respectively, vacuum-dry the two at 70°C for 12h, then mix them at 70°C and add 13.34 g AlCl 3 (0.1mol) was stirred to a clear transparent liquid, and the obtained betaine base DES catalyst was put into a silica gel drying box for subsequent use.
[0030] Preparation of hydrophobic DES: Weigh 154.25g (1mol) of terpineol and 172.26g (1mol) of capric acid, respectively, vacuum-dry them at 70°C for 12h, then mix and stir them at 75°C until clear and transparent liquid, the resulting terpineol-based DES catalyst was put into a silica gel drying oven for subsequent use.
[0031] Mix the hydrophilic DES and the hydrophobic DES uniformly according to the volume ratio of 1:1 to obtain the heterogeneous DES catalyst.
[0032] Synthesis of lily of the valley pyrans catalyzed by heterogeneous catalysts b...
Embodiment 2
[0035] Preparation of Heterogeneous Catalysts Based on Deep Eutectic Solvents:
[0036] Preparation of hydrophilic DES: Weigh 117.15g (1mol) of betaine and 148.24g (2mol) of isobutanol respectively, vacuum-dry the two at 80°C for 8h, then mix them at 70°C and add 12.94 g CoCl 2 (0.1mol) was stirred to a clear transparent liquid, and the obtained betaine base DES catalyst was put into a silica gel drying box for subsequent use.
[0037] Preparation of hydrophobic DES: Weigh 154.25g (1mol) terpineol and 344.52g (2mol) capric acid, respectively, vacuum-dry the two at 70°C for 8h, then mix and stir them at 80°C until clear and transparent liquid, the resulting terpineol-based DES catalyst was put into a silica gel drying oven for subsequent use.
[0038] Mix the hydrophilic DES and the hydrophobic DES uniformly according to the volume ratio of 1:2 to obtain the heterogeneous DES catalyst.
[0039] Synthesis of lily of the valley pyrans catalyzed by heterogeneous catalysts based...
Embodiment 3
[0042] Preparation of Heterogeneous Catalysts Based on Deep Eutectic Solvents:
[0043]Preparation of hydrophilic DES: Weigh 117.15g (1mol) of betaine and 74.12g (1mol) of isobutanol respectively, vacuum-dry them at 70°C for 10h, then mix them at 80°C and add 6.25 g MnCl 2 (0.05mol) was stirred to a clear transparent liquid, and the obtained betaine base DES catalyst was put into a silica gel drying box for subsequent use.
[0044] Preparation of hydrophobic DES: Weigh 154.25g (1mol) of terpineol and 200.32g (1mol) of lauric acid respectively, vacuum-dry the two at 90°C for 10h, then mix and stir them at 80°C until clear and transparent liquid, the resulting terpineol-based DES catalyst was put into a silica gel drying oven for subsequent use.
[0045] Mix the hydrophilic DES and the hydrophobic DES uniformly according to the volume ratio of 1:2 to obtain the heterogeneous DES catalyst.
[0046] Synthesis of lily of the valley pyrans catalyzed by heterogeneous catalysts bas...
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