Catalyst for decomposing formaldehyde as well as preparation method and application of catalyst
A technology of catalyst and formaldehyde, which is applied in the field of catalyst for decomposition of formaldehyde and its preparation, and can solve problems such as high working temperature and hindering practical application
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[0027] An aspect of the embodiments of the present invention provides a method for preparing a catalyst for decomposing formaldehyde, comprising:
[0028] making the first mixed reaction system containing 1,4-dicyanobenzene and organic acid undergo a polymerization reaction at 20-200°C for 0.2-3.0 hours to obtain the first solid;
[0029] Fully contacting the first solid with carbonate solution and / or bicarbonate solution to obtain a covalent triazine skeleton;
[0030] And, the second mixed reaction system comprising the ruthenium complex, the covalent triazine skeleton and the solvent is reacted at 20-100° C. for 1-24 hours to obtain a catalyst for decomposing formaldehyde, wherein the ruthenium complex includes dichloro (p-cymenyl)ruthenium(II) dimer.
[0031] In some more specific embodiments, the preparation method specifically includes: mixing 1,4-dicyanobenzene with an organic acid and stirring and dissolving at 20-100°C to form the first mixed reaction system, and the...
Embodiment 1
[0061] (1) First add 2 g of 1,4-dicyanobenzene to a glass flask, then add 5 mL of trifluoromethanesulfonic acid to form a suspension of 1,4-dicyanobenzene, and seal the flask with a rubber stopper, in which trifluoromethane Sulfonic acid is used as a catalyst and solvent for 1,4-dicyanobenzene;
[0062] Stir the 1,4-dicyanobenzene suspension at 60°C with a magnetic stirring bar to slowly dissolve 1,4-dicyanobenzene in trifluoromethanesulfonic acid, and then 1,4-dicyanobenzene in Polymerization occurs under the catalysis of trifluoromethanesulfonic acid, and the reaction solution becomes viscous. After the reaction solution loses fluidity, the glass flask is heated at 110°C for 2 hours, and a yellow solid containing trifluoromethanesulfonic acid is generated in the bottle;
[0063] The yellow solid containing trifluoromethanesulfonic acid is ultrasonically stirred in a sodium bicarbonate solution. During the reaction between trifluoromethanesulfonic acid and sodium bicarbonate,...
Embodiment 2
[0067] (1) First add 1,4-dicyanobenzene in a glass flask, then add trifluoromethanesulfonic acid to form a suspension of 1,4-dicyanobenzene (wherein 1,4-dicyanobenzene and trifluoromethane The mol ratio of sulfonic acid is 1: 1), seal the flask with a rubber stopper, wherein trifluoromethanesulfonic acid is used as the catalyst and solvent of 1,4-dicyanobenzene;
[0068] Stir the 1,4-dicyanobenzene suspension at 60°C with a magnetic stirring bar to slowly dissolve 1,4-dicyanobenzene in trifluoromethanesulfonic acid, and then 1,4-dicyanobenzene in Polymerization occurs under the catalysis of trifluoromethanesulfonic acid, and the reaction solution becomes viscous. After the reaction solution loses fluidity, the glass flask is heated at 110°C for 2 hours, and a yellow solid containing trifluoromethanesulfonic acid is generated in the bottle;
[0069] The yellow solid containing trifluoromethanesulfonic acid is ultrasonically stirred in a sodium bicarbonate solution. During the r...
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