Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743, Jena, Germany.
Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany.
Chemistry. 2023 Jun 13;29(33):e202203776. doi: 10.1002/chem.202203776. Epub 2023 May 2.
Online NMR measurements are introduced in the current study as a new analytical setup for investigation of the oxymethylene dimethyl ether (OME) synthesis. For the validation of the setup, the newly established method is compared with state-of-the-art gas chromatographic analysis. Afterwards, the influence of different parameters, such as temperature, catalyst concentration and catalyst type on the OME fuel formation based on trioxane and dimethoxymethane is investigated. As catalysts, Amberlyst 15 (A15) and trifluoromethanesulfonic acid (TfOH) are utilized. A kinetic model is applied to describe the reaction in more detail. Based on these results, the activation energy (A15: 48.0 kJ mol and TfOH: 72.3 kJ mol ) and the order in catalyst (A15: 1.1 and TfOH: 1.3) are calculated and discussed.
在线 NMR 测量在本研究中被引入，作为一种新的分析方法，用于研究氧亚甲基二甲醚 (OME) 的合成。为了验证该方法，将新建立的方法与最先进的气相色谱分析进行了比较。然后，研究了不同参数（如温度、催化剂浓度和催化剂类型）对基于三氧杂环己烷和二甲氧基甲烷的 OME 燃料形成的影响。使用 Amberlyst 15 (A15) 和三氟甲磺酸 (TfOH) 作为催化剂。应用动力学模型更详细地描述反应。基于这些结果，计算并讨论了活化能（A15：48.0 kJ/mol 和 TfOH：72.3 kJ/mol）和催化剂级数（A15：1.1 和 TfOH：1.3）。
