Ortmeyer Jochen, Bodach Alexander, Sandig-Predzymirska Lesia, Zibrowius Bodo, Mertens Florian, Felderhoff Michael
Max-Planck-Institut für Kohlenforschung, Department of Heterogeneous Catalysis, Kaiser-Wilhelm-Platz 1, 45470, Mülheim an der Ruhr, Germany.
TU Bergakademie Freiberg, Fakultät für Chemie und Physik, Institut für Physikalische Chemie, Leipziger Str. 29, 09599, Freiberg, Germany.
Chemphyschem. 2019 May 16;20(10):1360-1368. doi: 10.1002/cphc.201801093. Epub 2019 Feb 12.
Two approaches for the synthesis of the triethylenediamine (TEDA) ⋅ AlH adduct have been discovered. Both, the mechanochemical procedure and the wet chemical method lead to crystalline products. Starting from metallic Al powder and TEDA, ball milling under a pressure of 100 bar H facilitates a direct hydrogenation of aluminum with conversions up to 90 %. Structure determination from X-ray powder diffraction data revealed an 1-D-coordination polymer of the type [TEDA-AlH ] . Furthermore, solid-state NMR techniques have been applied to analyze composition and structure of the products. Due to the polymeric arrangement, an enhanced stability of the material occurred which was investigated by thermal analysis showing a decomposition located above 200 °C. Overall, the stabilization of AlH by TEDA holds promise for hydrogen storage applications.
已发现两种合成三亚乙基二胺（TEDA）⋅AlH加合物的方法。机械化学法和湿化学法均能得到结晶产物。以金属铝粉和TEDA为原料，在100 bar H压力下进行球磨，可促进铝的直接氢化，转化率高达90%。通过X射线粉末衍射数据确定结构，结果表明该产物为一维配位聚合物[TEDA-AlH]。此外，还应用了固态核磁共振技术分析产物的组成和结构。由于聚合物排列方式，该材料的稳定性增强，热分析表明其分解温度高于200°C。总体而言，TEDA对AlH的稳定作用在储氢应用方面具有潜力。
