Peter Andreas, Fehr Samuel M, Dybbert Valentin, Himmel Daniel, Lindner Ines, Jacob Eberhard, Ouda Mohamed, Schaadt Achim, White Robin J, Scherer Harald, Krossing Ingo
Department of Inorganic and Analytical Chemistry and Materials Research Center Freiburg, University of Freiburg, Albertstrasse 21, 79104, Freiburg, Germany.
Motors Emissions Concepts UG, Karwendelstrasse 25, 82152, Krailling, Germany.
Angew Chem Int Ed Engl. 2018 Jul 20;57(30):9461-9464. doi: 10.1002/anie.201802247. Epub 2018 Jul 3.
Oxymethylene dimethyl ethers (OME ; CH (-OCH -) O-CH , n=3-5) are a novel class of sustainable synthetic fuels, which are of increasing interest due to their soot-free combustion. Herein a novel anhydrous OME synthesis route is presented. Catalyzed by trimethyloxonium salts, dimethoxymethane takes up monomeric gaseous formaldehyde instantaneously and forms high purity OME at temperatures of 25-30 °C. This new anhydrous approach using molecular formaldehyde and catalytic amounts of highly active trimethyloxonium salts represents a promising new step towards a sustainable formation of OME emanating from CO and H .
聚甲醛二甲醚（OME；CH₃(-OCH₂-)ₙO-CH₃，n = 3 - 5）是一类新型的可持续合成燃料，因其无碳烟燃烧而越来越受到关注。本文提出了一种新型的无水OME合成路线。在三甲基氧鎓盐的催化下，二甲氧基甲烷瞬间吸收单体气态甲醛，并在25 - 30°C的温度下形成高纯度的OME。这种使用分子甲醛和催化量的高活性三甲基氧鎓盐的新无水方法代表了朝着由CO和H₂可持续形成OME迈出的有前景的新一步。
