Fe_3O_4@SiO_2-Cu复合磁性纳米粒子的制备及其脱硫性能的研究  

Preparation of Fe_3O_4@SiO_2-Cu composite magnetic nanoparticle and study on its desulfurization performance

作　　者：张言斌 李芹[1,2] 钟黄亮 罗聃 周红军[1] 周广林[1] ZHANG Yan-bin;LI Qin;ZHONG Huang-liang;LUO Dan;ZHOU Hong-jun;ZHOU Guang-lin(Institute of New Energy,China University of Petroleum-Beijin;China University of Petroleum-Beijing Institute of New Energy Co.,Lt)

机构地区：[1]中国石油大学(北京)新能源研究院,北京102249 [2]北京中石大新能源研究院有限公司,北京102249

出　　处：《现代化工》2018年第6期101-105,共5页Modern Chemical Industry

基　　金：生物燃气高值利用北京市重点实验室;中国石油大学(北京)青年创新团队C计划(C201604)

摘　　要：采用水解法合成了核壳型Fe_3O_4@SiO_2载体,用等体积浸渍法在磁性Fe_3O_4@SiO_2载体表面负载CuCl_2,得到Fe_3O_4@SiO_2-Cu磁性纳米粒子吸附剂。采用XRD、TEM、FT-IR、XPS、N_2吸附-脱附和振动样品强磁计(VSM)等表征手段对制备的吸附剂进行表征,考察了吸附剂对模型汽油中不同硫化物的脱硫性能。结果表明,核壳型Fe_3O_4@SiO_2载体的比表面积为246.5 m^2/g,同时饱和磁强度为44.6 emu/g。负载铜离子后,Fe_3O_4@SiO_2-Cu的饱和磁强度为43.9 emu/g。Fe_3O_4@SiO_2-Cu吸附剂可有效吸附噻吩类硫化物,硫容可达1.42 mg(S)/g(吸附剂)。采用先醇洗后焙烧的方法对失活吸附剂进行再生,吸附剂循环使用5次后仍能保持良好的再生稳定性。Magnetic core-shell type Fe3O4@ SiO2 carrier is synthesized by hydrolysis method. Fe3O4@ SiO2-Cu magnetic nanoparticles adsorbent is prepared by loading CuCl2 on the surface of magnetic Fe3O4@ SiO2 carrier through equal volume impregnation method.XRD,TEM,FT-IR,XPS,N2 adsorption-desorption and VSM are used to analyze the characteristics of the adsorbent.And the desulfurization performances of the absorbent against different sulfides in model gasoline are investigated. The results show the specific surface area and the saturated magnetic strength of core-shell Fe3O4@ SiO2 carrier are 246. 5 m^2·g^（-1） and 44. 6 emu·g^（-1）,respectively.After loading copper ions,the saturated magnetic strength of Fe3O4@ SiO2-Cu reaches 43. 9 emu·g^（-1）.Fe3O4@ SiO2-Cu adsorbent can effectively adsorb thiophene sulfide,with sulfur capacity up to 1. 42 mg of sulfur per gram adsorbent. The deactivated adsorbent can be regenerated by the method of alcohol-washing and roasting.The absorbent remains good regenerative stability after 5 times recycling.

关 键 词：Fe3O4@SiO2-Cu 模型汽油 噻吩类硫化物 重复使用性能 

分 类 号：TE624[石油与天然气工程—油气加工工程]