Introduction

1. TGA • FTIR —Before calcined …After calcined Weight(%) Transmittance (a.u.) Temperture(℃) Wavenumber (cm-1) • Blank test • The effects of catalysts Efficiency(%) Efficiency(%) Temperture(℃) Temperture(℃) • Effects of concentration • The effect of temperature Efficiency(%) Efficiency(%) Temperture(℃) Concentration( ppm) • The recognition after learning • The recognition Na2SiO3 Sｔｉｒ 2hr. Add HCl crystallization at 160 °C for 48 h Add FeNO3 filter, wash 8 gCTAB+ 100mL H2O Calcined at 650 °C in air 6 h Study on the Characteristics and Performance Assessment of Prepared Mesopourous Metal MCM-41 Catalyst for Treating Di-chloromethane Chang-Tang Chang, Huei-Huang Chen, Yi-Chun Lin, Weih-Sin Wu, Yun-An Wu Introduction VOCs are one of the main sources of photochemical reaction in the atmosphere, leading to various environmental hazards and resulting harm of human. Catalysts for controlling VOCs can be divided into noble metal (Pt) and oxidizing metal catalysts (Fe). Metal-MCM-41 has good performance for controlling VOCs. The aim of thisstudy：To assess the performance of catalyst；platinum catalyst, Fe-MCM-41, Ironcatalyst；Toconfirm reaction feasibility；To evaluate optimum operating conditions. Experimental • Character XRD, BET, TGA, FTIR • Operation Conditions • Preparation of Fe-MCM-41 Conclusion 1. The thermal efficiency was 22% under 400 degrees with the blank test. 2. The temperature must be higher than 250, 300, and 350 degrees with the platinum catalyst, Fe-MCM-41, and iron catalyst, respectively, to obtain a degradation efficiency higher than 90%. 3. The performance of the catalysts ranked as follows: platinum catalyst > Fe-MCM-41 > iron catalyst. 4. Following the Langmuir-Hinshelwood kinetics model, the second-order rate constant kc of the Fe catalyst, Fe-MCM-41 and Pt catalysts was 39.1, 375, and 1878 mg/m3-min, respectively. In addition, the equilibrium adsorption constant K of the three catalysts was 5.65, 0.59 and 0.12 L/mg, individually. 5. The activity energy of the iron catalyst, Fe-MCM-41, and platinum catalyst was 3.31, 0.41 and 1.83 kcal, respectively, from the Arrhenius equation. The order of collision factor A of the catalysts was 1.16 x 104, 102, and 1.87 x 104 sec-1. Results and discussion • BET • XRD Intensity(a.u.) Quantity Adsorbed (cm3g-1STP) 2θ (degree) Relative Pressure (P/Po)