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

机械过程工程/水技术主席与杜伊斯堡-埃森大学的其他三位主席合作，申请资金购买热重-红外-气相色谱-质谱耦合（TGA-IR-GC-MS）。该装置还配有热脱附模块，通过固相吸附将低浓度物质或沸点非常高的物质直接绑定在TGA出口处，然后在GC-MS （TED-GC-MS）中进行分析。该装置的一个重要应用领域是研究用于水处理的吸附剂和催化剂，以及用于工业和分析目的。这包括已知和新开发的材料的物理化学特性，但也对负载吸附剂的再生研究。除了吸附物的解吸和分解温度（即沉积在表面的分子）外，该技术还可以通过分析在特定温度下释放的气体馏分来获得有关材料本身的信息，从而得出诸如化学成分等结论。例如，该装置将用于阐明有机分子在碳或催化剂表面吸附的基本机制，但也用于表征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，特别是关于污染物在这些颗粒上的吸附。此外，该装置旨在用于水处理膜材料的热分析。具有改善污染性能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“通风空调系统”和“汽车内饰过滤器”的研究领域中，该装置用于过滤器和过滤材料的研究。目的是进一步了解这些材料的性能、耐化学性和老化性，并更新标准。利用IR-GC-MS或TED-GC-MS对已有回转窑中吸附剂的热处理反应过程进行实验室规模的分析和描述，通过与回转窑排气系统耦合的装置上提供的连接来实现。

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.