Detailed investigation of the oxidation and pyrolysis of short chain aldehydes (C1–C4)

燃烧过程中的醛排放对人类健康构成迫在眉睫的威胁，必须尽可能减少。为了开发减少排放的技术，人们必须了解醛在燃烧过程中是如何排放和消耗的。虽然醛类的排放取决于燃料特定的化学性质，但在发动机相关条件下的消耗主要取决于醛类特定的化学性质。然而，在发动机相关的条件下，实验数据是稀缺的，因此，详细的化学动力学模型不足以验证这些条件。这项研究将通过提供通过快速压缩机和激波管实验获得的低温和高压点火延迟时间测量值来弥补这一不足。此外，化学计量氧化无氧热解条件下的形态数据将通过气相色谱/质谱和红外激光吸收诊断相结合。这些实验数据为C1 - C4醛氧化和热解化学的一致和分层详细的化学动力学建模和验证提供了良好的基础。该研究的结果将大大推进对醛在燃烧过程中如何消耗的理解，并深入了解其潜在机制。这些知识对于今后开发减少醛类排放的技术至关重要。

Aldehyde emissions from combustion processes pose an imminent threat to human health and have to be minimized as much as possible. For the development of technologies for emissions reductions one has to understand how aldehydes are emitted and consumed during combustion. While the emission of aldehydes depends on the fuel-specific chemistry, the consumption at engine-relevant conditions mostly depend on the aldehyde-specific chemistry. At engine-relevant conditions, however, experimental data is scarce and therefore, detailed chemical kinetic models are insufficiently validated for these conditions. The research will remedy this scarcity by providing low temperature and high-pressure ignition delay time measurements obtained through rapid compression machine and shock tube experiments. Moreover, speciation data from stoichiometric oxidation to oxygen-free pyrolysis conditions will be obtained through combined gas chromatography / mass spectrometry and infrared laser absorption diagnostics. These experimental data provide a sound basis for consistent and hierarchical detailed chemical kinetic modeling and validation for C1 – C4 aldehyde oxidation and pyrolysis chemistry. The results of the research will significantly advance the understanding of how aldehydes are consumed during combustion processes and give insights into the underlying mechanisms. This knowledge is crucial for future development of technologies for reducing aldehyde emissions.