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标题：Benzothiophene adsorption on M/SBA‐15 and M/SBA‐15/NH4F modified (M = Fe or Co) in liquid phase batch system
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作者：Leandro Marques Correia ; Juan Antonio Cecilia ; Francisco Murilo Tavares de Luna 等
期刊名称：Canadian Journal of Chemical Engineering
印刷版ISSN：0008-4034
出版年度：2017
卷号：95
期号：12
页码：2315-2323
DOI：10.1002/cjce.23028
语种：English
出版社：Chemical Institute of Canada
摘要：Abstract In this study the removal of benzothiophene (BT) from a synthetic solution with n‐octane was evaluated using batch adsorption on modified mesoporous silicas impregnated with iron and cobalt species. The silica was modified to limit the aggregation and enlargement of mesochannels and produce a less ordered structure if compared to SBA‐15. The synthesized adsorbents were characterized by X‐ray diffraction (XRD), N2 adsorption/desorption isotherms at −196 °C, transmission electron microscopy (TEM), and X‐ray photoelectron spectroscopy (XPS). Adsorption equilibrium was investigated using different sulphur concentrations (3–15 mmol/L) and temperatures (30–50 °C). Under optimized conditions, the SBA‐15 sample modified with NH4F containing 10 g/g of Co showed the highest adsorption capacity (0.101 mmol/g), at 30 °C. Thus it may be inferred that these materials are promising for removal of sulphur in low concentrations from liquid fuels.
关键词：enhydrodesulphurizationadsorptionbenzothiophenemesoporous silicas