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As we all know, the catalyst research and development is one of the core issues of the modern chemical industry. Oxo alcohol 4 sets of industrial devices with high energy consumption, high pollution and other issues, the problem is particularly prominent in calling for energy conservation, green catalysis and green production process today. Therefore, the development of green catalytic processes applied to Oxo alcohol device is a challenging but imperative. Firstly, through the surface grafting method 3 - aminopropyl trimethoxy silane (APTMS), N-aminoethyl - # 61543; - aminopropyl of trimethoxysilane (AAPTMS) and N, N-diethylamino trimethoxysilane (DAPTMS) grafted on MCM-41 mesoporous molecular sieve surface, obtained three corresponding organic amine-functionalized mesoporous solid base catalysts NH2-MCM of NH2NH-MCM and NR2-MCM; using 2 - cyanoacetate yl trimethoxysilane (CETMS), NH2-MCM modified NH2-MCM-COOH acid and alkali, the dual-function catalyst, the catalyst prepared Characterization; The prepared catalyst is used for the n-butyraldehyde self-condensation to system Octenal reaction to study the catalytic performance. The results show that the three catalysts under the same reaction conditions, the catalytic effect of the NH2-MCM is preferably, in catalytic amount to 0.3 mmol amine, the reaction was 10 h, Octenal yield of more than 70%; compared to the NH2-MCM , NH2-MCM-COOH exhibits excellent catalytic performance, and the amount of catalyst, 0.15 mmol amine, the reaction for 10 h, Octenal yield almost twice the NH2-MCM; This indicates that the basicity of the surface of the catalyst an organic amine group and an acidic group having a significant pH synergy significantly promote the condensation reaction of n-butyraldehyde. Secondly, the primary amine, a diamine and two secondary amine grafted on MCM-41 was prepared in four different organic amine functional catalyst, and the catalyst prepared in the characterization. In the n-butyraldehyde from organic amine loading on the synergistic effect of the acid-base between the the catalyst surface amino groups and the remaining Si-OH in the reaction of condensation, Knoevenagel condensation, Henry. The experimental results show that the surface of the catalyst there exists an optimal amine loading amount, in the case of the optimum loading, the optimal pH synergy between the catalyst surface amino groups and the remaining Si-OH. Meanwhile, the catalyst performance of the catalyst of the different amine functional evaluation, found that a secondary amine catalyst having the optimum catalytic performance. Finally, choose the 3 - aminopropyl trimethoxy silane and 3 - aminopropyl trimethoxy ethoxyethoxy silane (APTMEES) both having different molecular sizes of the organic amine as a precursor, which is incorporated into the organic acid functional catalyst, prepared by acid-base groups from the different bifunctional catalyst, by Henry Reaction its performance evaluation, and also investigated the influence of the different solvents on the pH of synergistic effect of the dual-function catalyst.
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