Cu改性活性炭用于氢气中噻吩的吸附  

ADSORPTION DESULFURIZATION OF THIOPHENE FROM HYDROGEN BY Cu-MODIFIED ACTIVATED CARBON

作　　者：张悦 周广林[1] 姜伟丽[1] 李芹[1] 郭修成 刘世成 Zhang Yue;Zhou Guanglin;Jiang Weili;Li Qin;Guo Xiucheng;Liu Shicheng(College of New Energy and Materials,China University of Petroleum,Beijing 102249)

机构地区：[1]中国石油大学(北京)新能源与材料学院,北京102249

出　　处：《石油炼制与化工》2023年第2期51-57,共7页Petroleum Processing and Petrochemicals

基　　金：中国石油天然气集团有限公司-中国石油大学(北京)战略合作科技专项(ZLZX2020-04)。

摘　　要：以商业化的活性炭(AC)为载体,采用等体积浸渍法制备了不同金属改性的活性炭吸附剂,用于脱除氢气中的噻吩,采用固定床动态吸附法考察了过渡金属改性吸附剂及不同含量Cu改性吸附剂对噻吩的脱除性能。利用N2吸附-脱附、X射线衍射、扫描电子显微镜和能量色散谱等方法对吸附剂进行了表征和分析。结果表明:Cu负载量(w)为3%时,活性炭具有最佳脱硫能力,噻吩穿透时间为22 h,比未改性的活性炭吸附剂延长7 h;活性炭经Cu改性后仍保留了丰富的多孔结构,但比表面积和孔体积均有所下降;改变活性组分CuO在吸附剂表面的分布,对改性吸附剂吸附噻吩有较好的促进作用,有助于提高吸附噻吩的容量。Using activated carbon(AC)as a carrier,different metal-modified activated carbon adsorbents were prepared by equal volume impregnation method for the removal of thiophene in hydrogen,and the thiophene removal properties of transition metal modified adsorbents and Cu modified adsorbents with different contents were investigated by using fixed bed dynamic adsorption method.The adsorbents were characterized and analyzed by means of N2 physical adsorption-desorption(BET),X-ray diffraction(XRD),scanning electron microscopy(SEM)and energy dispersive spectroscopy(EDX).The results showed that the activated carbon had the best desulfurization ability when the copper loading was 3%,and the permeation time of the thiophene was 22 h,which was 7 h longer than that of the unmodified activated carbon adsorbent.After modification of activated carbon with Cu,the porous structure of activated carbon still remained abundant,but the specific surface area and pore volume decreased,and the distribution of the active component CuO on the surface of the adsorbent was changed,it could promote the adsorption of thiophene by the modified adsorbent and improve the adsorption capacity of thiophene.

关 键 词：噻吩 吸附 活性炭吸附剂 铜 

分 类 号：TM911.4[电气工程—电力电子与电力传动] TQ424[化学工程]