Study on Preparation of Carbon-based Sorbents for Desulfurization in Hot Coal Gas by Supercritical Water Impregnation

摘要：

The sorbents were prepared by depositing Cu,Mn,Zn oxide particles onto activated carbon (AC) using supercritical water impregnation.Morphology and structure,amount of loading of metal of sorbents,pore volume and surface area were characterized by XRD,SEM,ICP-AES and BET.The sulfidation tests were performed using a fixed-bed reactor.The effects of the precursor concentration,the preparation temperature and the reaction time on sulfidation properties of sorbents were investigated.The results show that the content of metal oxide and particles size can be controlled by change the temperature,reaction time and precursor concentration during supercritical water impregnation (SCWI).The optimal SCWI condition for preparing sorbents is at precursor concentration of 0.46 mol/L,380 oC and 30 min.The micropore volume,surface area and dispersion of metal oxide particles of sorbent have obvious effect on its desulfurization activity.The sorbents prepared by SCWI have quite high desulfurization efficiency and sulfur capacity of

关键词： middle temperature desulfurization:metal oxide/AC:supercritical water impregnation

作者: Biao Qiu Lina Han Jiancheng Wang Liping Chang Weiren Bao

作者单位: Key Laboratory of Coal Science and Technology,Ministry of Education and Shanxi Province,Taiyuan University of Technology,Taiyuan 030024,China

会议类型: 国际会议

会议名称: The 8th International Symposium on Gas Cleaning at High Temperatures(第八届国际高温气体净化技术研讨会 GCHT-8)

会议地点: 太原

会议语种:英文

页码: 644-653

在线出版日期: 2010-08-23（万方平台首次上网日期，不代表论文的发表时间）