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首页> 外文期刊>RSC Advances >Novelty of Claisen-Schmidt condensation of biomass-derived furfural with acetophenone over solid super base catalyst
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Novelty of Claisen-Schmidt condensation of biomass-derived furfural with acetophenone over solid super base catalyst

机译：固体超碱催化剂上生物量衍生糠醛与苯乙酮的Claisen-Schmidt缩合反应

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Valorization of biomass into value added chemicals and products using green technologies has been a subject matter of several papers. Claisen-Schmidt condensation of furfural with acetophenone to produce the alpha,beta-unsaturated keto compound, 3-(furan-2-yl)-1-phenylprop-2-en-1-one, is commercially attractive since it is used in the pharmaceutical industry and can be hydrogenated to give high quality diesel fuel. In the current work, preparation and characterization of 5-15% w/w Al2O3 on CaO was done using FT-IR, TGA, XRD, SEM, EDXS, TPD and nitrogen BET. It was used in the reaction of furfural with acetophenone and its activity and selectivity were compared with other catalysts in a batch reactor at 120 degrees C. 15% w/w Al2O3/CaO was the best catalyst. It was 100% selective towards the formation of 3-(furan-2-yl)-1-phenylprop-2-en-1-one. The catalyst is robust and can be reused without loss of activity. The kinetics of the reaction follow the Langmuir-Hinshelwood-Hougen-Watson mechanism with weak adsorption of all species leading to typical second order kinetics. The apparent energy of activation is 12.5 kcal mol(-1).
机译：使用绿色技术将生物质转化为增值化学品和产品一直是几篇论文的主题。糠醛与苯乙酮的Claisen-Schmidt缩合生成α，β-不饱和酮化合物3-（呋喃-2-基）-1-苯基丙-2-烯-1-酮在商业上具有吸引力，因为它被用于制药工业，可以加氢得到高质量的柴油。在目前的工作中，使用FT-IR，TGA，XRD，SEM，EDXS，TPD和氮BET对CaO进行了5-15％w / w Al2O3的制备和表征。将其用于糠醛与苯乙酮的反应中，并将其活性和选择性与分批反应器中其他催化剂在120℃下进行比较。15％w / w Al2O3 / CaO是最好的催化剂。它对形成3-（呋喃-2-基）-1-苯基丙-2-烯-1-酮具有100％的选择性。该催化剂坚固耐用，可以重复使用而不会失去活性。该反应的动力学遵循Langmuir-Hinshelwood-Hougen-Watson机理，所有种类的吸附均较弱，从而导致典型的二级动力学。活化的表观能量为12.5 kcal mol（-1）。

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