Thermogravimetry-Infrared gas chromatography-mass spectrometry coupling (TGA-IR-GC-MS)

在与杜伊斯堡-埃森大学的其他三个椅子的合作，机械工艺工程/水技术的椅子申请资金购买热重-红外-气相色谱-质谱耦合（TGA-IR-GC-MS）。该设备还配备了一个热解吸模块，通过该模块，低浓度物质或沸点很高的物质可以通过固相吸附直接结合在TGA的出口处，随后在GC-MS（TED-GC-MS）中进行分析。该设备的一个重要应用领域是研究用于水处理以及工业和分析目的的吸附剂和催化剂。这包括已知和新开发的材料的物理化学特性，以及对负载吸附剂再生的研究。除了吸附物（即沉积在表面上的分子）的解吸和分解温度外，该技术还可用于通过分析在特定温度下释放的气体组分来获得有关材料本身的信息，从而得出有关化学成分的结论。例如，该设备将用于阐明有机分子在碳或催化剂表面吸附的基本机制，还可用于表征用于光催化应用的新型复合材料。TGA-IR-GC-MS也非常适合分析水生环境中的微塑料，特别是在此类颗粒上的污染物吸附方面。此外，该设备预期用于水处理膜材料的热分析。具有改进的污染特性的新型膜材料的开发，例如用于处理严重污染的水（例如来自石油生产），是前景。在“通风和空调系统”和“汽车内部过滤器”的研究领域，该设备用于研究过滤器和过滤材料。目的是进一步了解这些材料的性能、耐化学性和老化情况，并更新标准。在实验室规模上通过IR-GC-MS或TED-GC-MS对现有回转窑中吸附剂热处理期间的反应过程的分析和描述将通过在装置上提供的用于与回转窑的排气系统耦合的连接来实现。

In cooperation with three other chairs of the University of Duisburg-Essen the Chair of Mechanical Process Engineering / Water Technology applies for funds for the purchase of a thermogravimetry - infrared - gas chromatography - mass spectroscopy coupling (TGA-IR-GC-MS). The device is additionally equipped with a thermodesorption module, with which low concentrated substances or those with very high boiling points can be bound directly at the exit of the TGA by solid phase adsorption and subsequently analyzed in the GC-MS (TED-GC-MS).An essential field of application of the device is the investigation of adsorbents and catalysts for water treatment, as well as for industrial and analytical purposes. This includes the physical-chemical characterization of known and newly developed materials, but also investigations on the regeneration of loaded adsorbents. In addition to desorption and decomposition temperatures of adsorbates (i.e. molecules deposited on the surface), this technology can also be used to obtain information about the material itself by analyzing the gas fractions released at certain temperatures, thus allowing conclusions to be drawn, for example, about the chemical composition. For example, the device will be used to elucidate fundamental mechanisms in the adsorption of organic molecules on carbon or catalyst surfaces, but also to characterize novel composite materials for photocatalytic applications.The TGA-IR-GC-MS is also ideally suited for the analysis of microplastics in aquatic environments, especially with regard to the adsorption of pollutants on such particles. Furthermore, the device is intended to be used for the thermal analysis of membrane materials for water treatment. The development of novel membrane materials with improved fouling properties, e.g. for the treatment of heavily contaminated water (e.g. from oil production), is in the foreground. In the research field "ventilation and air-conditioning systems" and "automotive interior filters" the device is to be used for the investigation of filters and filter materials. The objectives are to gain further knowledge about the performance, chemical resistance and aging of such materials and to update standards. The analysis and description of the reaction processes during the thermal treatment of adsorbents in an already existing rotary kiln on a laboratory scale by means of IR-GC-MS or TED-GC-MS is to be realized by a connection provided on the device for coupling with the exhaust system of the rotary kiln.