Transition metal doped MIL-88 aerogel material as well as preparation method and application thereof
A transition metal, aerogel technology, applied in chemical instruments and methods, catalyst activation/preparation, chemical/physical processes, etc., can solve problems such as limiting catalytic performance, and achieve wide selectivity, simple operation, and mild reaction conditions. Effect
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Embodiment 1
[0038] 50 mL of deionized water was added to a beaker with copper nitrate hexahydrate (2 mM), ferric chloride hexahydrate (18 mM) and fumaric acid (20 mM), heated to 50° C. and stirred for 60 min. Then, the mixture was transferred to a 100 mL hydrothermal reactor at 60 °C for 10 h to obtain a reddish-brown precipitate. The precipitate was centrifuged and washed with hot ethanol at 50 °C for 4 times and then dried in vacuum for 12 h to obtain a Cu-doped MIL-88 catalyst. Take 50 mL of deionized water in a beaker, heat it to 50 °C in a water bath, add 1 g of CMC, stir until it is homogeneous, move to room temperature and continue to stir for 2 h to obtain CMC gel. Another 50 mL of deionized water was taken into the beaker, 2 mL of acetone was added, and then sonicated for 5 min, then 1 g of transition metal-modified MIL-88 catalyst powder was added, and sonicated for 1 h to obtain a catalyst dispersion. Then, the catalyst dispersion was poured into the CMC gel, stirred at 400 rp...
Embodiment 2
[0041]50 mL of deionized water was added to a beaker with ferric nitrate hexahydrate (2 mM), ferric chloride hexahydrate (8 mM) and fumaric acid (16 mM), heated to 60° C. and stirred for 80 min. Subsequently, the mixture was transferred to a 100 mL hydrothermal reactor at 75 °C for 18 h to obtain a reddish-brown precipitate. The precipitate was centrifuged and washed with hot ethanol at 60°C for 6 times and then dried in vacuum for 24 h to obtain the Mn-doped MIL-88 catalyst. Take 50 mL of deionized water in a beaker, heat it to 60 °C in a water bath, add 3 g of CMC and stir until it is homogeneous, then move to room temperature and continue to stir for 3 h to obtain CMC gel. Another 50 mL of deionized water was taken into the beaker, 4 mL of acetone was added, and then sonicated for 5 min, then 2 g of transition metal-modified MIL-88 catalyst powder was added, and sonicated for 1 h to obtain a catalyst dispersion. Then, the catalyst dispersion was poured into the CMC gel, st...
Embodiment 3
[0044] 50 mL of deionized water was added to a beaker with nickel nitrate hexahydrate (3 mM), ferric chloride hexahydrate (17 mM) and fumaric acid (15 mM), then heated to 70° C. and stirred for 90 min. Subsequently, the mixture was transferred to a 100 mL hydrothermal reactor at 90° C. for 24 h to obtain a reddish-brown precipitate. The precipitate was centrifuged and washed with hot ethanol at 60 °C for 6 times, and then dried in vacuum for 24 h to obtain Ni-doped MIL-88 catalyst. Take 50 mL of deionized water in a beaker, heat it to 70 °C in a water bath, add 3 g of CMC and stir to homogenize, then move to room temperature and continue to stir for 2.5 h to obtain CMC gel. Another 50 mL of deionized water was taken into the beaker, 3 mL of acetone was added, and sonicated for 5 min, followed by adding 2 g of transition metal-modified MIL-88 catalyst powder, and sonicated for 2 h to obtain a catalyst dispersion. Then, the catalyst dispersion was poured into the CMC gel, stirr...
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