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

机械过程工程/水技术教席与杜伊斯堡-埃森大学的其他三个教席合作，申请资金购买热重-红外-气相色谱-质谱仪(TGA-IR-GC-MS)。该装置还配备了热解吸模块，利用该模块，低浓度或极高沸点的物质可以通过固相吸附直接在TGA的出口处结合，然后在GC-MS(TED-GC-MS)中进行分析。该装置的一个基本应用领域是研究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表征，也包括对负载吸附剂再生的研究。除了吸附物(即沉积在表面的分子)的解吸和分解温度外，这项技术还可以通过分析在特定温度下释放的气体组分来获得关于材料本身的信息，从而能够得出例如关于化学成分的结论。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理，也将用于表征用于光催化应用的新型复合材料。TGA-IR-GC-MS还非常适合于水环境中微塑料的分析，特别是关于污染物在此类颗粒上的吸附。此外，该装置还将用于水处理膜材料的热分析。开发具有更好的污染性能的新型膜材料，例如用于处理严重污染的水(例如来自石油生产的水)，是很有前景的。在“通风和空调系统”和“汽车内部过滤器”的研究领域，该设备将用于研究过滤器和过滤材料。目的是进一步了解此类材料的性能、耐化学性和老化情况，并更新标准。在实验室规模上用IR-GC-MS或TED-GC-MS分析和描述已有的回转窑中的吸附剂热处理过程中的反应过程，将通过设置在与回转窑排气系统耦合的装置上的连接来实现。

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.