The sulfurization of Titanium Dioxide (TiO2)by pure Hydrogen Sulfide (H2S) was successfully monitored using a simultaneous Thermogravimetry (TG) and Mass Spectrometer (MS) system. While confirming the progress of the reaction from TG and MS data, experimental results also showed that such a reaction was diffusion controlled. 采用熱重與質(zhì)譜同步分析，成功地監(jiān)測了TiO2與純的H2S硫化反應(yīng)的全過程，并揭示了其擴散控制的機理