摘要
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 MoS_2夹层,合成了前体 Li_xMoS_2;Li_xMoS_2与水反应,形成 MoS_2单分子层悬浮液,然后再与 Ni(NO_3)_2溶液反应制得新型非负载型 Ni-MoS_2复合材料。X 射线衍射结果表明,Ni-MoS_2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-MoS_2复合材料加氢脱硫、脱芳的活性。实验结果表明,抽余油催化加氧制备特种溶剂油的适宜条件为:Ni-MoS_2复合材料中 n(Ni):n(Mo)=0 06,氢气压力6.0 MPa,反应温度360℃,反应时间3 h,液态空速1.0 h^(-1)。在此条件下抽余油加氢脱硫的转化率为99.2%,加氢脱芳的转化率达到98.7%。
A catalyst precursor LixMoS2 was prepared by intercalating n-butyl lithium between MoS2 layers, under ultrasonic waves and using single-molecular-layer exfoliation-restacking technique. MoS2 single-molecular-layer suspension was formed by reaction of precursor Lix MoS2 with water. A newtype nonsupported Ni-MoS2 composite was obtained by further reaction of the above suspension with Ni（NO3）2 solution. Ni-MoS2 composite existed in sulfide form, observed by means of XRD. Catalytic hydrogenation of raffinate oil was used as probe reaction to evaluate the activity of Ni-MoS2 composite in hydrodesulfurization （ HDS ） and hydrodearomatization （HDA）. Under optimal reaction conditions： n （Ni） ： n （Mo） 0. 06 in Ni-MoS2 composite, hydrogen pressure 6. 0 MPa, reactive temperature 360 ℃, reaction time 3 h and LHSV 1.0 h^-1, conversions of HDS and HDA can reach 99.2% and 98.7%, respectively.
出处
《石油化工》
EI
CAS
CSCD
北大核心
2008年第12期1260-1263,共4页
Petrochemical Technology
基金
国家自然科学基金资助课题(20776031)
广州市教育局科研项目(62040)
广州大学科研创新团队项目(广大[2008]127号)
关键词
镍-二硫化钼复合材料
加氢脱硫
加氢脱芳
抽余油
特种溶剂油
催化加氢
nickel-molybdenum disulfide composite
hydrodesulfurization
hydrodearomatization
raffinate oil
special solvent oil
catalytic hydrogenation
