Preparation method and application of ionic liquid/MOF composite catalyst
A composite catalyst and ionic liquid technology, applied in the fields of material chemistry and environment, can solve the problems of difficulty in simultaneously introducing multiple functional sites, loss of ionic liquid, and limitation of carrier types, and achieve excellent CO2 catalytic performance, high conversion rate, and easy recovery. separation effect
Inactive Publication Date: 2020-08-11
TAIYUAN UNIV OF TECH
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Problems solved by technology
The former is restricted by chemical synthesis, which greatly limits the type of carrier and it is difficult to simultaneously introduce multiple functional sites, while the latter two easily cause problems such as channel blockage and ionic liquid loss.
Method used
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Experimental program
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Effect test
Embodiment 1
[0027] 0.05g diamino ionic liquid 1A Dissolve in 1ml ethanol, weigh 0.1g MIL-101 and disperse into the solution, centrifuge, and vacuum dry at 40°C. The resulting solid was dissolved in succinic dialdehyde (0.045 g) in acetonitrile (1 mL) and stirred at room temperature for 0.5 h. After centrifugation, washing with acetonitrile three times, and vacuum drying at 60°C for 24 hours, the ionic liquid / MOF composite catalyst was obtained, which was named MIL-1A.
Embodiment 2
[0029] Same as in Example 1, with the mass of 1A adjusted to 0.1 g and other conditions unchanged, MIL-1A-1 was obtained.
Embodiment 3
[0031] Same as in Example 1, with succinic dialdehyde replaced by glutaraldehyde, and other conditions unchanged, MIL-1A-2 was obtained.
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The invention discloses a preparation method and application of an ionic liquid / MOF composite catalyst. The catalyst is prepared by taking diamino-functionalized ionic liquid and dialdehyde as raw materials and taking a metal organic framework material as a carrier. The preparation method for such a material is simple in process and low in ionic liquid consumption; and the prepared catalyst has excellent catalytic performance, can efficiently catalyze and convert CO2 to prepare cyclic carbonate under mild conditions of normal pressure, low temperature, no cocatalyst and the like, presents excellent cycling stability, and is of great significance to CO2 emission reduction and resource utilization.
Description
technical field [0001] The invention relates to a preparation method and application of an ionic liquid / MOF composite catalyst, belonging to the field of material chemistry and environment. Background technique [0002] With the rapid development of the global economy, the greenhouse effect is increasing, CO 2 The emission reduction control has aroused widespread concern. CO 2 It is the most widely distributed and abundant carbon resource on the earth. Under certain conditions, it can be converted into high value-added chemical products such as formic acid, methanol, and cyclic carbonate. However, due to the 2 It has thermodynamic stability and kinetic inertness, and its activation conversion requires harsh conditions of high temperature and high pressure, so the realization of CO 2 Catalytic conversion under mild conditions is a hotspot of current research. [0003] Ionic liquids, as a new class of green catalysts and solvents, can rapidly and reversibly dissolve CO 2 ...
Claims
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IPC IPC(8): B01J31/22B01J31/02C07D233/61C07D317/36
CPCB01J31/0244B01J31/1691B01J31/1815B01J31/2239B01J31/2243B01J2231/341B01J2531/62C07D233/61C07D317/36
Inventor 史利娟易群吴玉程李杰高丽丽单媛媛齐凯王晓波张静
Owner TAIYUAN UNIV OF TECH
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