A kind of magnetic hierarchical porous metal organic framework catalyst and its preparation method and application
A technology of metal-organic frameworks and hierarchical pores, which is applied in the fields of organic compound/hydride/coordination complex catalysts, organic chemistry, catalytic reactions, etc. To solve the problems of poor quality and performance, to achieve the effect of magnetic controllability, wide application range, and reduced diffusion resistance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0047] A method for preparing the magnetic multi-stage porous metal organic framework catalyst of the present invention, the specific steps are as follows:
[0048] (1) Weigh 15.33 g acrylamide, 3.11 g N,N'-methylenebisacrylamide and 2.25 g polyvinyl alcohol (molecular weight 10000 g / mol), and dissolve them in 40 mL distilled water to form a mixed aqueous solution ;
[0049] (2) Take 4 mL of the mixed aqueous solution prepared in step (1), 0.4 mL Triton X-405 and 0.2g Fe 3 O 4 Nano particles, stir evenly with a mechanical stirrer at 1500 rpm, and then add 6 mL xylene and 200 mL ammonium persulfate solution (10 wt%) drop by drop, continue stirring for 10 minutes, and then add 30 mL tetraethyl ethyl Diamine
[0050] (3) The resulting system was reacted at 60 ℃ for 24 hours, and the resulting product was cut into 0.3 cm × 0.3 cm × 0.3 cm block particles, washed three times with deionized water and acetone, and dried in vacuum at 60 ℃ for 12 h, to obtain magnetic macroporous polyacryla...
Embodiment 2
[0054] A method for preparing the magnetic multi-stage porous metal organic framework catalyst of the present invention, the specific steps are as follows:
[0055] The preparation method of magnetic macroporous polyacrylamide is the same as the step (1), step (2) and step (3) of Example 1;
[0056] Dissolve 1.732 g of zinc nitrate hexahydrate and 0.3217 g of terephthalic acid into 11 mL of N,N'-dimethylformamide, take 4 mL of the prepared solution into a polytetrafluoroethylene-lined reactor and add Several pieces of magnetic macroporous polyacrylamide were reacted at 105 ℃ for 24 h. After magnetic separation and repeated washing with ethanol for three times, the product was vacuum dried in a vacuum oven at 60 ℃ for 12 h to obtain a magnetic hierarchical porous MOF-2 composite catalyst .
[0057] Figure 7 with Figure 8 Is the scanning electron microscope image of the internal cross-section of the obtained magnetic multi-porous MOF-2 composite catalyst (different magnification), b...
Embodiment 3
[0059] A method for preparing the magnetic multi-stage porous metal organic framework catalyst of the present invention, the specific steps are as follows:
[0060] The preparation method of magnetic macroporous polyacrylamide is the same as the step (1), step (2) and step (3) of Example 1;
[0061] Dissolve 0.080 g of zirconium tetrachloride and 0.057 g of terephthalic acid into 10 mL of N,N'-dimethylformamide, take 4 mL of the prepared solution in a polytetrafluoroethylene lined reactor, and add Several pieces of magnetic macroporous polyacrylamide were reacted at 120 ℃ for 24 h. After magnetic separation and repeated washing with ethanol for three times, the product was vacuum dried in a vacuum oven at 60 ℃ for 12 h to obtain a magnetic hierarchical porous UiO-66 composite catalyst .
[0062] Picture 9 Is a scanning electron microscope image of the internal cross-section of the obtained magnetic multi-porous UiO-66 composite catalyst. Picture 9 It can be seen that UiO-66 grows ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| pore size | aaaaa | aaaaa |
| pore size | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More