Energy storage via liquid organic hydrogen carrier (LOHC) systems has gained significant attention in recent times. A dibenzyltoluene (DBT) based LOHC offers excellent properties which largely solve today's hydrogen storage challenges. Understanding the course of the dehydrogenation reaction is important for catalyst and process optimization. Therefore, reliable and exact methods to determine the degree of hydrogenation (doh) are important. We here present other possible techniques, namely: comprehensive two-dimensional gas chromatography coupled with time of flight mass spectrometry (2D-GC-TOF-MS) and single quadrupole-mass spectrometry gas chromatogram system (GC-SQ-MS). The 2D-GC-TOF-MS results indicate that isomer fractions lose three molecules of hydrogen, as follows: H18-DBT, H12-DBT, H6-DBT and H0-DBT, and the doh decreases with an increase in dehydrogenation temperature. ¹H NMR and GC-SQ-MS were employed as additional analytical techniques. The GC-SQ-MS was also used to analyse decomposition products that result from thermal cracking of reaction mixture molecules.

近年来，通过液态有机氢载体（LOHC）系统进行的能量存储受到了广泛关注。基于二苄基甲苯（DBT）的LOHC具有出色的性能，在很大程度上解决了当今的储氢难题。了解脱氢反应的过程对于催化剂和工艺优化很重要。因此，确定氢化度（doh）的可靠而精确的方法很重要。我们在这里介绍了其他可能的技术，即：全面的二维气相色谱与飞行时间质谱联用（2D-GC-TOF-MS）和单四极杆质谱气相色谱系统（GC-SQ-MS）。2D-GC-TOF-MS结果表明，异构体馏分损失了三个氢分子，如下所示：H18-DBT，H12-DBT，H6-DBT和H0-DBT，¹ H NMR和GC-SQ-MS被用作其他分析技术。GC-SQ-MS还用于分析反应混合物分子热裂解产生的分解产物。