Large-aperture SBA-15 mesoporous material-copper trifluoromethanesulfonate composite catalyst, preparation method and application
A technology of copper trifluoromethanesulfonate, SBA-15, applied in organic compound/hydride/coordination complex catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as limited loading capacity and affecting catalytic performance , to achieve the effect of not easy to corrode the instrument and high reactivity
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Embodiment 1
[0020] Example 1: Preparation of a copper trifluoromethanesulfonate-loaded mesoporous material
[0021] The mesoporous material SBA-15 with a pore diameter of 10-11nm was vacuum-dried at 150°C for 6 hours. After cooling to room temperature, 1g was weighed, and 20ml methyl ethyl ketone and 1g copper trifluoromethanesulfonate were weighed and put into 100ml poly In a reaction kettle lined with tetrafluoroethylene, close the reaction kettle, stir at a temperature of 25°C for 8 hours, centrifuge, and filter the liquid to obtain the solid product SBA-Cu(OTf) 2 , after vacuum-drying it at 150° C. to remove impurities, it weighed 1.2 g.
[0022] figure 1 gives SBA-15(a), SBA-Cu(OTf) 2 (b) and SBA-Cu(OTf) 2 (c) XRD patterns after two catalytic reactions. From the above three spectra, it can be seen that the macroporous mesoporous material SBA-15 has an ordered mesoporous structure, and after loading copper trifluoromethanesulfonate, it still maintains an ordered mesoporous structu...
Embodiment 2
[0023] Example 2: Preparation of a copper trifluoromethanesulfonate-loaded mesoporous material
[0024] The mesoporous material SBA-15 with a pore diameter of 10-11nm was vacuum-dried at 150°C for 6 hours. After cooling to room temperature, 1g was weighed, and 20ml methyl ethyl ketone and 1g copper trifluoromethanesulfonate were weighed and put into 100ml poly In a reaction kettle lined with tetrafluoroethylene, close the reaction kettle, stir at a temperature of 35°C for 8 hours, centrifuge, and filter the liquid to obtain the solid product SBA-Cu(OTf) 2 , after vacuum-drying it at 150° C. to remove impurities, it weighed 1.2 g.
Embodiment 3
[0025] Example 3: Preparation and application of a copper triflate-loaded mesoporous material
[0026] The mesoporous material SBA-15 with a pore diameter of 10-11nm was vacuum-dried at 150°C for 6 hours. After cooling to room temperature, 1g was weighed, and 20ml methyl ethyl ketone and 1g copper trifluoromethanesulfonate were weighed and put into 100ml poly In a reaction kettle lined with tetrafluoroethylene, close the reaction kettle, stir for 8 hours at a temperature of 25 ° C, centrifuge and obtain the solid product SBA-Cu(OTf) 2 .
[0027] Add 1,2-propylene oxide 7.7g, methyl ethyl ketone 22g, SBA-Cu(OTf) successively in 100ml polytetrafluoroethylene lining reactor 2 1.2g, reacted in a 55°C oil bath for 24 hours under stirring conditions, centrifuged, and analyzed the components of the reaction product liquid by gas chromatography, the conversion rate of 1,2-propylene oxide was 100%, and the conversion rate of 2,4-dimethyl- 75% selectivity to 2-ethyl-1,3-dioxolane. , ...
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