催化研究中的原位Raman光谱技术
In Situ Raman Technique On Catalysis Studies
Abstract
研制了分别适用于MACrO-rAMAn及MICrO-rAMAn谱仪的高性能原位样品池。性能指标温度：从173k-1073k连续可调，精度±0.5-2k；压力：常压至10MPA.真空度：10-6TOr：相态：气固相及液相。指标表明，多数类型的化学反应都可以在上述样品池内再现。此外，还提出了建立光谱——色谱——质谱——微型反应器联用装置的技术方案，用于考察反应过程催化剂表面结构，吸附物种与产物三者之间的内在联系，以期将催化反应机理的研究提高到原位动态分子水平。 Two high perFormance in situ Raman cells Fit in with Macro Raman and Micro Raman spectrograph respectively have been designed and Fabricated. SpeciFications Temperature: 173K 1073K continuously adjustable, accuracy ±0.5 2K, Pressure: atmosphere to 10 MPa, Vacuum:10 6 torr, Phases: gas solid and liquid.The speciFications indicate that most chemical reactions can take place in the cells.A plan to combine in situ Raman technique with GC MS and Microreactor has been proposed, which is very useFul to study the relationship among catalyst surFace structure, adsorbed species and products under reacting conditions.The plan is expected to characterize the mechanism of the catalysis reaction at dynamic molecular level in situ.