The chemical composition and the location of coke were investigated by using various analytical techniques such as XRD, IR, NMR and TGA, etc.

• 结合X射线衍射、红外光谱、核磁共振、热重分析等多种分析手段,分析了焦炭的化学组成及焦炭在催化剂上的沉积位置。