Characterization of Adsorbents for FCC Gasoline Dearsenification and Related Mechanism
LIU Kunhong1, JU Yana1, LAN Ling1, WANG Fei1, FENG Qi1, CAO Qing1, GE Shaohui1, XIAO Zhanmin1, ZHOU Jisheng2
1. Petrochemical Research Institute, CNPC, Beijing 100195, China;
2. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Abstract：A dearsenification adsorbent was developed to remove arsenic in FCC gasoline. The adsorbent was prepared with activated carbon as carrier, and copper and nickel as active components. The morphology and structure of the adsorbent were characterized by X-ray diffraction (XRD), high resolution transmission electron microscope (HRTEM), X-ray photoelectron spectroscopy (XPS). In order to study the mechanism of dearsenization, the deactivation evaluation was tested with FCC gasoline in high space velocity. Then, the mechanism of adsorptive dearsenification for FCC gasolines was revealed by investigating the changes of micropore structure, crystal structure and chemical state of the elements before and after dearsenification. Results show that the size of the active components CuO particles is increased significantly, and the lattice fringes of CuO disappeares after dearsenification. The adsorbed arsenic is mainly in the form of complex arsenic oxide and oxygenated organic arsenide. Small amount of arsenic exists in the form of arsenic oxide and arsenic.
刘坤红，鞠雅娜，兰玲，王飞，冯琪，曹青，葛少辉，肖占敏，周继升. FCC汽油吸附脱砷剂的表征及其脱砷机理[J]. 石油学报（石油加工）, 2019, 35(1): 28-34.
LIU Kunhong, JU Yana, LAN Ling, WANG Fei, FENG Qi, CAO Qing, GE Shaohui, XIAO Zhanmin, ZHOU Jisheng. Characterization of Adsorbents for FCC Gasoline Dearsenification and Related Mechanism. ACTA PETROLEI SINICA (PETROLEUM PROCESSING SECTION, 2019, 35(1): 28-34.
