Ni-MoS2复合材料应用于抽余油的催化加氢脱硫和脱芳烃

CATALYTIC HYDRODESULFURIZATION AND HYDRODEAROMATIZATION OF EXTRACT OIL OVER Ni-MoS_2 COMPOSITE

在超声波作用下,采用单分子层剥离-重堆积技术,将正丁基锂柱插入MoS2夹层,合成了前驱体LixMoS2。前驱体和水反应,形成MoS2单分子层悬浮液,将其与Ni(NO3)2反应制得新型非负载型Ni-MoS2复合材料。XRD表征结果表明,Ni-MoS2复合材料呈硫化态。以抽余油催化加氢为探针反应,考察了Ni-MoS2复合材料在抽余油催化加氢制备特种溶剂油时的加氢脱硫(HDS)、加氢脱芳烃(HDAr)的活性。结果表明,抽余油催化加氢制备特种溶剂油的最佳条件为:Ni-MoS2复合材料中n(Ni)/n(Mo)=0.06,氢气分压6.0MPa,反应温度360℃,液时空速1.0h-1。在此条件下,抽余油的HDS转化率为99.2%,HDAr转化率达到98.7%。

Under the action of ultrasonic waves, the premonitory LixMoS2 was prepared by n-butyl lithium intercalating in MoS2 layers, by using the single-molecular-layer exfoliated-restacked technology. MoS2 single-molecular-layer suspension was formed by LixMoS2 reacted with water. The new-type unsupported Ni-MoS2 composite was obtained by the reaction of suspension with Ni（NO3）2 solution. The XRD analysis revealed that the Ni-MoS2 composite was in sulfide state. The catalytic hydrogenation of extract oil was used as probe reaction to investigate the catalytic activity of Ni-MoS2 composites for hydrodesulfurization （HDS） and hydrodearomatization （HDAr）. The results showed that optimum conditions for HDS and HDAr of extract oil were atomic ratio n（Ni）/n（Mo） in Ni-MoS2 composite of 0.06, hydrogen pressure of 6.0 MPa, reactive temperature of 360℃ and LHSV of 1. 0 h^-1, under which the HDS and HDAr conversion of extract oil was 99.2% and 98.7%, respectively.