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Carboxymethylation of cinnamylalcohol with dimethyl carbonate over the slag-based catalysts
Reaction Kinetics, Mechanisms and Catalysis ( IF 1.7 ) Pub Date : 2021-07-10 , DOI: 10.1007/s11144-021-02021-9
Ekaterina Kholkina 1 , Narendra Kumar 1 , Kari Eränen 1 , Vincenzo Russo 1, 2 , Jani Rahkila 1 , Johan Wärnå 1 , Dmitry Yu. Murzin 1 , Markus Peurla 3 , Juha Lehtonen 4
Affiliation  

The carboxymethylation of cinnamylalcohol with dimethyl carbonate was performed using low-cost catalysts obtained from desulfurization slag. Processing of steel slag performed by different techniques was resulted in a wide range of the catalysts with different morphological and structural properties. Catalytic evaluation of the slag catalysts illustrated diversity of the obtained results strongly dependent on the surface area, crystal morphology and basicity. Catalytic materials demonstrated high variability of the conversion (8–85%) exhibiting similar selectivity to the desired product – cinnamyl methyl carbonate (ca. 80%). A significant impact of ultrasonication on catalytic activity was observed. Comparison of the synthesized samples with commercial basic materials illustrated competitive ability of the slag catalysts. Based on the results of catalytic evaluation and product analysis the reaction network was proposed and verified by thermodynamic analysis. A kinetic model was developed to describe concentration dependencies in carboxymethylation.



中文翻译:

渣基催化剂上肉桂醇与碳酸二甲酯的羧甲基化反应

肉桂醇与碳酸二甲酯的羧甲基化反应使用从脱硫渣中获得的低成本催化剂进行。通过不同的技术对钢渣进行处理,产生了多种具有不同形态和结构特性的催化剂。矿渣催化剂的催化评价表明所得结果的多样性强烈依赖于表面积、晶体形态和碱度。催化材料表现出转化率的高可变性 (8-85%),表现出与所需产物 - 肉桂基甲基碳酸脂 (约 80%) 相似的选择性。观察到超声处理对催化活性的显着影响。合成样品与商业基础材料的比较说明了渣催化剂的竞争能力。基于催化评价和产物分析的结果,提出了反应网络,并通过热力学分析进行了验证。开发了动力学模型来描述羧甲基化中的浓度依赖性。

更新日期:2021-07-12
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