葡萄糖还原法制备CuCl/NaY吸附剂及其CO吸附和CO/H_2分离性能

Absorbent of CuCl/NaY Prepared by Glucose Direct Reduction and the Application for Adsorption of CO and Separation for CO/H_2 Mixture Gas

以NaY分子筛为载体,CuCl2为铜源,加入还原剂葡萄糖,在温和条件下制备了CuCl/NaY吸附剂,通过变压吸附考察了其对CO的吸附性能及对CO/H2的分离性能.利用X射线衍射(XRD)、X射线光电子能谱(XPS)及程序升温还原谱(TPR)技术对吸附剂进行了表征.结果表明,采用葡萄糖还原法制备CuCl/NaY吸附剂的条件温和,吸附剂表面的亚铜含量高,对CO的吸附及CO/H2的分离性能优越且稳定性好.

CuCl/NaY sorbents were prepared via incipient wetness impregnation method under mild condition with copper chloride as metal precursor and glucose as reducing agent.The efficient adsorption amount of CO and the separation coefficient of CO/H2 on the sorbents were measured by dynamic adsorption process.The microstructures of the sorbents were characterized by X-ray diffraction（XRD）,X-ray photoelectron spectroscopy（XPS） and temperature programmed reduction（TPR） techniques.The results showed that the sorbent prepared using glucose as reducing agent possessed higher amounts of Cu＋ than that without glucose,and resulted in a better adsorption capability of CO and separation performance of CO/H2.