摘要
以P 123为模板剂,蔗糖为碳源,正硅酸四乙酯为硅源,采用硬模板法合成出有序介孔炭CMK-3,利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、比表面积法(BET)等分析手段对其结构及性质进行了表征,并通过动态吸附脱硫实验,考察了其对噻吩类硫化物的脱除性能。结果表明,合成的介孔炭CMK-3具有二维六方高度有序单介孔结构,孔径分布均匀,且主要集中在约4.8 nm,比表面积、孔容分别为1 232.1 m2/g,1.5 cm3/g;介孔炭CMK-3对苯并噻吩的吸附选择性最强,噻吩次之,对二苯并噻吩的吸附效果最差,饱和硫容量分别为5.46,4.07,3.91 mg/g;在模拟油中加入氮化物(包括吡啶和喹啉)、苯或十二烯后,噻吩类硫化物的饱和硫容量均显著下降。
Using P 123 as template agent,sucrose as carbon source,and tetraethyl orthosilicate as silicon source,the ordered mesoporous carbon CMK- 3was synthesized by the method of hard template. The structure and properties of CMK- 3 were characterized with analysis means such as XRD,SEM,TEM and BET,and the thiophene sulfide removal performance of CMK- 3 was investigated by dynamic adsorption desulfurization experiment. The results showed that the mesoporous carbon CMK- 3 had a two- dimensional hexagonal highly ordered single pore structure,uniform pore size distribution,mainly focused on about 4. 8 nm,and specific surface area and pore volume were 1 232. 1 m2/ g and 1. 5 cm3/ g respectively. The adsorptive selectivity of mesoporous carbon CMK- 3 on benzothiophene was the best,followed by thiophene,dibenzothiophene was the worst,and their saturated sulphur capacity were5. 46,4. 07 and 3. 91 mg / g separately. After adding nitrides（ including pyridine and quinoline）,benzene or dodecene in the simulated oil,the saturated sulphur capacity of thiophene sulfide reduced significantly.
出处
《石化技术与应用》
CAS
2016年第2期93-97,共5页
Petrochemical Technology & Application
基金
辽宁省科学技术厅项目(项目编号:2013020097)
辽宁省教育厅项目(项目编号:LJQ 2015062
L 2015296)
抚顺市科技计划项目(项目编号:FSKJHT 201376)
关键词
吸附脱硫
介孔炭
硫化物
饱和硫容量
吸附选择性
adsorption desulfurization
mesoporous carbon
sulphide
saturated sulphur capacity
adsorptive selectivity
