Double-functional organic compound type solid acid and preparation method thereof
A composite, dual-functional technology, applied in the direction of organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low catalytic efficiency and achieve improved catalytic performance, Effect of inhibiting rehydration reaction
Active Publication Date: 2015-11-11
SUZHOU XIANGYUAN SPEICAL FINE CHEM
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Problems solved by technology
However, traditional composite materials are the summation and synergy of macro performance, which has certain limitations, and the development of nanotechnology has opened up new fields for the development of new composite materials.
[0003] Hydroxymethylfurfural (HMF), as an important biomass derivative, has been considered to produce fine chemicals. In the production process of HMF, polystyrene sulfonic acid is generally used alone as a catalyst, but its catalytic The efficiency is very low, so in a single aqueous phase, a product that is not only conducive to catalyzing the dehydration of fructose to generate HMF, but also conducive to inhibiting the occurrence of HMF rehydration reaction
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Embodiment 1
[0016] The invention proposes a bifunctional organic composite solid acid, which includes silica pellets as a carrier, and the silica pellets are grafted with polystyrene sulfonic acid.
[0017] The preparation method of the above-mentioned bifunctional organic composite solid acid comprises the following steps:
[0018] a. Preparation of silica pellets: Dissolve ammonia water and ethyl n-cinnamate in ethanol respectively, and stir at room temperature for 12 hours with a stirrer. The resulting solid particles are separated by a centrifuge, dispersed in ethanol again, and centrifuged. The following washing process adopts ethanol (twice)-water (twice)-ethanol (one time), and the solid obtained at last is dried at room temperature under a certain air flow rate;
[0019] b. The initiator is grafted on the surface of the silica sphere;
[0020] c. Polystyrene sulfonic acid is grafted on the surface of silica pellets through an initiator;
[0021] Preferably, the initiator is 4-ch...
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The invention provides a double-functional organic compound type solid acid and a preparation method thereof. The double-functional organic compound type solid acid comprises silicon dioxide small balls which are used as carriers; polystyrene sulfonic acid is grafted on the silicon dioxide small balls; in a single water phase, the proceeding of catalyzing fructose to dehydrate to generate HMF is facilitated, and the inhibition on occurrence of an HFM rehydration reaction is also facilitated; and compared with polystyrene sulfonic acid PSSH, the catalytic performance is remarkably improved and the yield of the HFM reaches 40%.
Description
technical field [0001] The invention relates to the field of nanocomposite materials, in particular to a bifunctional organic composite solid acid. Background technique [0002] Composite material technology is composed of two or more materials with different properties, through physical or chemical methods, compounded into materials with multiple functions from the molecular level. Since various materials learn from each other in performance and produce synergistic effects, the comprehensive performance of the obtained composite material is better than that of the original constituent materials, so that it can meet various requirements. However, traditional composite materials are the summation and synergy of macroscopic properties, which have certain limitations, and the development of nanotechnology has opened up new fields for the development of new composite materials. [0003] Hydroxymethylfurfural (HMF), as an important biomass derivative, has been considered to prod...
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Inventor 周建颜玉荣
Owner SUZHOU XIANGYUAN SPEICAL FINE CHEM