A kind of metal-supported catalyst and its preparation method and application
A supported catalyst and metal technology, which is applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of complex material synthesis steps and high catalyst cost, and achieve stable catalytic performance and improve activity. Effect
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Embodiment 1
[0037] Ternary non-noble metal Cu 0.8 Ni 0.1 co 0.1Preparation of @MIL-101 nanocatalyst:
[0038] (1) Weigh terephthalic acid (0.82g, 5.0mmol), chromium nitrate nonahydrate (2.06g, 5.0mmol), NaAC (0.11g, 0.125mmol) and deionized water (25mL), stir for 30min and transfer to Put it into a 50mL stainless steel reaction kettle lined with polytetrafluoroethylene, seal it and transfer it to a constant temperature of 180°C for 18 hours. After the reaction was completed, it was cooled to room temperature to obtain a green suspension. Transfer the suspension into a centrifuge tube, add DMF, heat to 70°C, shake and wash, and then centrifuge twice. Wash the obtained green product with deionized water twice at room temperature and then centrifuge. Put the obtained green product at 70°C Drying for 12 hours under the hood to obtain MIL-101 green powder.
[0039] (2) Weigh 50.0 mg of the above MIL-101 powder and disperse it in 5 ml of absolute ethanol, and disperse it by ultrasonic for ...
Embodiment 2
[0044] Ternary non-noble metal Cu 0.4 Ni 0.3 co 0.3 Preparation of @MIL-101 nanocatalyst:
[0045] Weigh 50.0 mg of the MIL-101 powder prepared in Example 1 and disperse it in 5 ml of absolute ethanol, and disperse it ultrasonically for 30 min. Weigh 2.05mg CuCl 2 2H 2 O, 2.2mg NiCl 2 ·6H 2 O, 2.2 mg CoCl 2 ·6H 2 O was added to the above MIL-101 solution, and ultrasonic dispersion was continued for 30 minutes. After the sonication is completed, transfer to a 60°C water bath and heat and stir until the solvent is completely evaporated to obtain a dry green block.
[0046] Weigh 111.4 mg NaBH 4 Dissolve in 5ml deionized water, NaBH 4 The aqueous solution was added to the above-mentioned green block at one time to reduce the metal ions, and the stirring was continued for 1 h after the addition was completed. After the obtained solution was centrifuged with deionized water, the obtained green block was vacuum-dried overnight to obtain dark green ternary Cu 0.4 Ni 0.3...
Embodiment 3
[0048] Ternary non-noble metal Cu 0.6 Ni 0.2 co 0.2 Preparation of @MIL-101 nanocatalyst:
[0049] Weigh 50.0 mg of the MIL-101 powder prepared in Example 1 and disperse it in 5 ml of absolute ethanol, and disperse it ultrasonically for 30 min. Weigh 3.08mg CuCl 2 2H 2 O, 1.5mg NiCl 2 ·6H 2 O, 1.5 mg CoCl 2 ·6H 2 O was added to the above MIL-101 solution, and ultrasonic dispersion was continued for 30 minutes. After the sonication is completed, transfer to a 60°C water bath and heat and stir until the solvent is completely evaporated to obtain a dry green block.
[0050] Weigh 111.4 mg NaBH 4 Dissolve in 5ml deionized water, NaBH 4 The aqueous solution was added to the above-mentioned green block at one time to reduce the metal ions, and the stirring was continued for 1 h after the addition was completed. After the obtained solution was centrifuged with deionized water, the obtained green block was vacuum-dried overnight to obtain dark green ternary Cu 0.6 Ni 0.2...
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