Desulfurization performance of iron supported on activated carbon

作者：Liu Xiao Li; Guo Jia Xiu^*; Chu Ying Hao; Luo De Ming; Yin Hua Qiang; Sun Ming Chao; Yavuz Reha

来源：Fuel, 2014, 123: 93-100.

DOI：10.1016/j.fuel.2014.01.068

• Activated carbon
• Fe3O4
• Desulfurization
• Acidic treatment
• Surface oxygen groups

Fe catalysts supported on activated carbon untreated and treated by HNO3 were prepared by an ultra-sound- assisted incipient wetness method and characterized using N-2 adsorption/desorption, scanning electron microscopic (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Desulfurization activity was evaluated at a fixed bed reactor under a simulated flue gas. The results showed that the SO2 adsorption capacity of AC is 74 mg/g; when Fe is loaded on activated carbon untreated by HNO3, SO2 adsorption capacity increases to 244 mg/g; and when Fe is loaded on activated carbon treated by HNO3, SO2 adsorption capacity increases to 322 mg/g. Fe3O4 species exists on the surface of fresh catalysts, but after desulfurization, Fe-2(SO4)(3) is detected, indicating that Fe species could react with generated H2SO4 in the desulfurization process and may be the main reason of the deactivation of Fe catalysts supported on activated carbon.

• 出版日期2014-5-1
• 单位四川大学