【摘要】 以镍铝合金粉及拟薄水铝石为原料制备了用于苯深度脱硫的负载型骨架镍吸附剂,采用X射线衍射（XRD）、氢程序升温还原（H₂-TPR）、扫描电镜（SEM）等对吸附剂的物化性质进行表征分析,并对吸附剂深度脱除苯中微量噻吩的性能进行评价。结果表明,负载型骨架镍吸附剂主要通过氧化铝负载的骨架活性金属镍与苯中噻吩硫通过化学吸附作用达到选择吸附脱硫的目的,在吸附温度150℃、吸附压力1.0 MPa、苯中噻吩浓度为100μg·g^-1、进料液时空速为2 h^-1的条件下,吸附剂对噻吩的穿透吸附容量31.09 mg·g^-1,饱和吸附容量32.44 mg·g^-1,吸附脱硫产物苯中噻吩含量检不出,表现出吸附剂具有对苯中噻吩硫化物良好的选择吸附脱硫性能。更多还原

【Abstract】 The supported Raney Ni adsorbent for ultra-deep adsorptive desulfurization of benzene was prepared by using nickel-aluminum alloy powder and pseudo-boehmite.The physicochemical properties of the adsorbent were characterized by X-ray diffraction（XRD）,hydrogen temperature programmed reduction（H₂-TPR） and scanning electron microscopy（SEM）.The performance of the adsorbent was evaluated in ultra-deep removal of trace thiophene from coking benzene.The results show that the selective desulfurization can be achieved by chemical adsorption between thiophene sulfur in benzene and active Raney Ni supported on alumina.Under the conditions of adsorption temperature 150 ℃, adsorption pressure 1 MPa, thiophene in benzene 100 μg·g^-1,and LHSV 2 h^-1,the breakthrough sulfur capacity is 31.09 mg·g^-1,and the saturated sulfur capacity is 32.44 mg·g^-1.The thiophene content in benzene could not be detected, which shows that the adsorbent had excellent selective adsorption desulfurization performance for thiophene in benzene.更多还原