ZIF-67/CuBTC composite material and derivative thereof, method and application thereof
A ZIF-67, composite material technology, applied in separation methods, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as difficulty in compounding, difficulty in MOF growth, and achieve mild operating conditions and simple methods.
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Embodiment 1
[0033] (1) Preparation of ZIF-67 / CuBTC and its derivatives using sodium alginate alcohol solution:
[0034] First, dissolve 4.154g of copper nitrate trihydrate in 30ml of pure water, 2.0g of trimesic acid in 60ml of DMF, ultrasonically homogenize them, transfer them to the reactor at 120°C, react in the reactor for 4 hours, wash with DMF , and then washed with methanol until the supernatant was colorless and dried to obtain CuBTC in the form of blue powder. Weigh 0.05g of sodium alginate and dissolve it in 20ml of pure water, stir at 60°C for 12h, then add 0.2g of CuBTC, stir evenly, and record it as CuBTC sodium alginate solution; weigh 1.455g of cobalt nitrate hexahydrate and dissolve it in 40ml of methanol , 1.642g of 2-methylimidazole was dissolved in 40ml of methanol, mixed evenly and added to the sodium alginate solution of CuBTC, reacted at room temperature for 24h, then washed twice with ethanol, washed once with methanol, and dried at 80°C to obtain ZIF-67 / CuBTC.
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Embodiment 2
[0049] (3) Change the concentration of sodium alginate:
[0050] First, CuBTC was prepared according to the method of Example 1. Dissolve 0.2g of sodium alginate in 20ml of pure water, stir at 60°C for 12 hours, then add 0.2g of CuBTC, and stir evenly; weigh 1.455g of cobalt nitrate hexahydrate in 40ml of methanol, and dissolve 1.642g of 2-methylimidazole In 40ml of methanol, mixed evenly, added to the sodium alginate solution of CuBTC, reacted at room temperature for 24h, then washed twice with ethanol, washed once with methanol, and dried at 80°C to obtain ZIF-67 / CuBTC.
[0051] The obtained ZIF-67 / CuBTC was calcined in a muffle furnace at 300 °C for 2 h in an air atmosphere to obtain Co 3 o 4 / CuO Catalyst 3. The resulting ZIF-67 / CuBTC for H 2 The flux is 8.9*10 -7 mol·s -1 m -2 ·Pa -1 , H 2 / CO 2 and H 2 / N 2 The selectivities were 13.6 and 7.5; the obtained Co 3 o 4 / CuO catalyst 3 can completely oxidize CO at 170°C.
Embodiment 3
[0053] (4) Change the type of cobalt salt:
[0054] First, CuBTC was prepared according to the method of Example 1. Weigh 0.05g of sodium alginate and dissolve in 20ml of pure water, stir at 60°C for 12h, then add 0.2g of CuBTC, and stir evenly; weigh 1.455g of cobalt acetate tetrahydrate and cobalt sulfate in 40ml of methanol, 1.642g 2 - Methylimidazole was dissolved in 40ml of methanol, mixed evenly, added to the sodium alginate solution of CuBTC, reacted at room temperature for 24 hours, then washed twice with ethanol, washed once with methanol, and dried at 80°C to obtain ZIF-67 / CuBTC respectively -1 and ZIF-67 / CuBTC-2.
[0055] The obtained ZIF-67 / CuBTC-1 was calcined in a muffle furnace at 300 °C for 2 h in an air atmosphere to obtain Co 3 o 4 / CuO Catalyst 4.
[0056] The obtained ZIF-67 / CuBTC-2 was calcined in a muffle furnace at 300 °C for 2 h in an air atmosphere to obtain Co 3 o 4 / CuO Catalyst 5.
[0057] ZIF-67 / CuBTC-1 prepared from cobalt acetate for H 2 ...
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