Hierarchical porous zeolite imidazate skeletal material, and preparation method thereof
A technology of zeolite imidazolate and framework materials, which is applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, organic chemistry, etc., and can solve the problems of easy collapse of mesopores, long reaction time, and non-environmental protection , to achieve good catalytic activity, mild conditions, and short time-consuming effects
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[0032] Example 1
[0033] A preparation method of a multi-porous zeolite-like imidazole ester framework material includes the following steps:
[0034] (1) Add 0.44g Zn(NO) to 5.07g eutectic solvent (ChCl / urea-DES, the molar ratio of choline chloride to urea is 1:2) 3 ) 2 ·6H 2 O and 0.13g sodium dodecyl sulfate (SDS) were stirred at 60°C until the solid was dissolved, and a clear and transparent homogeneous solution was obtained;
[0035] (2) Add 0.49 g of 2-Methylimidazole (2-Mim) to the homogeneous solution, and stir at 60°C for 30 minutes to obtain a suspension;
[0036] (3) Centrifuge the suspension, wash with a 50% ethanol aqueous solution and absolute ethanol, and dry at 110° C. for 12 hours to obtain the zeolite-like imidazole ester framework material (ZIF8). Table 1 shows the structure characterization test data of the zeolite-like imidazole ester framework material prepared in this example.
[0037] The X-ray diffraction pattern of the hierarchical zeolite-like imidazole ester
Example Embodiment
[0038] Example 2
[0039] A preparation method of a multi-porous zeolite-like imidazole ester framework material includes the following steps:
[0040] (1) Stir and mix 4.75g of eutectic solvent (ChCl / urea-DES, the molar ratio of choline chloride to urea is 1:2) and 0.25g of deionized water to obtain a mixed solvent;
[0041] (2) Add 0.44g Zn(NO 3 ) 2 ·6H 2 O and 0.13g sodium dodecyl sulfate (SDS) were stirred at 60°C until the solid was dissolved, and a clear and transparent homogeneous solution was obtained;
[0042] (3) Add 0.49g of 2-methylimidazole (2-Mim) to the homogeneous solution, stir at 60°C for 30min, to obtain a suspension;
[0043] (4) Centrifuge the suspension, wash with a 50% ethanol aqueous solution and absolute ethanol in volume fraction, and dry at 110° C. for 12 hours to obtain a zeolite-like imidazole ester framework material. Table 1 shows the structure characterization test data of the zeolite-like imidazole ester framework material prepared in this example.
[004
Example Embodiment
[0045] Example 3
[0046] A preparation method of a multi-porous zeolite-like imidazole ester framework material includes the following steps:
[0047] (1) Stir and mix 4.25 g of eutectic solvent (ChCl / urea-DES, the molar ratio of choline chloride to urea is 1:2) and 0.75 g of deionized water to obtain a mixed solvent;
[0048] (2) Add 0.44g Zn(NO 3 ) 2 ·6H 2 O and 0.13g sodium dodecyl sulfate (SDS) were stirred at 60°C until the solid was dissolved, and a clear and transparent homogeneous solution was obtained;
[0049] (3) Add 0.49g of 2-methylimidazole (2-Mim) to the homogeneous solution, stir at 60°C for 30min, to obtain a suspension;
[0050] (4) Centrifuge the suspension, wash with a 50% ethanol aqueous solution and absolute ethanol in volume fraction, and dry at 110° C. for 12 hours to obtain a zeolite-like imidazole ester framework material. Table 1 shows the structure characterization test data of the zeolite-like imidazole ester framework material prepared in this example.
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