Application of green synthesis nanocomposite adsorbents in the adsorption desulfurization of dibenzothiophene in model oil

IF 2.1 3区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY
Hozan Jalal Saleem , Yousif Mustafa Salih , Luqman Omar Hamasalih , Chawan Saiwan Othman
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引用次数: 1

Abstract

The nanocomposites have an important role in accelerating the adsorption of sulfur compounds because of their improved chemical and mechanical characteristics. In this study, silver nanoparticles, zinc oxide nanoparticles, and silver/zinc oxide nanoparticles were greenly synthesized and loaded with activated carbon by a successive precipitation method for the adsorptive desulfurization of model oil (dibenzothiophene, DBT, in 85% hexane + 15% toluene). The obtained adsorbents were characterized by using UV-visible spectroscopy, Fourier transmission infrared spectroscopy, a field emission scanning electron microscope, energy-dispersive X-ray spectroscopy, X-ray diffraction, and Brunauer-Emmett-Teller surface area (SBET) analysis to confirm their structure, chemical composition, functional groups present on the adsorbents, and surface area. The adsorption experiments were conducted under optimal conditions, with 0.15 g of adsorbent dosage and a contact time of 1 h at 25 °C, during which the (Ag/ZnONPS-AC) adsorbent removed 99% of dibenzothiophene (250 mg/l). The total order removal performance of DBT of: Ag/ZnONPS-AC > ZnONPS-AC > AgNPS-AC > AC was observed. Kinetic studies revealed that the adsorption process of (Ag/ZnONPS-AC) obeyed pseudo-second-order kinetics and the Langmuir adsorption isotherm model. This study provides a cost-effective adsorbent for the effective desulfurization of model oil.

绿色合成纳米复合吸附剂在模型油中二苯并噻吩吸附脱硫中的应用
纳米复合材料由于其化学和力学特性的改善,在加速含硫化合物的吸附方面具有重要作用。在本研究中,绿色合成了银纳米粒子、氧化锌纳米粒子和银/氧化锌纳米粒子,并通过连续沉淀法负载活性炭,用于模型油(二苯并噻吩,DBT, 85%己烷+ 15%甲苯)的吸附脱硫。采用紫外可见光谱、傅里叶透射红外光谱、场发射扫描电镜、能量色散x射线光谱、x射线衍射和布鲁诺尔-埃米特-泰勒表面积(SBET)分析对所得吸附剂进行了表征,以确定其结构、化学成分、吸附剂上的官能团和表面积。吸附实验在最佳条件下进行,吸附剂用量为0.15 g,接触时间为1 h,在25℃条件下,(Ag/ZnONPS-AC)吸附剂对二苯并噻吩(250 mg/l)的去除率为99%。观察了Ag/ZnONPS-AC > ZnONPS-AC > AgNPS-AC > AC DBT的总脱序性能。动力学研究表明,(Ag/ZnONPS-AC)的吸附过程符合拟二级动力学和Langmuir吸附等温模型。该研究为模型油的有效脱硫提供了一种经济高效的吸附剂。图形抽象
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来源期刊
Journal of Sulfur Chemistry
Journal of Sulfur Chemistry CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
4.10
自引率
9.10%
发文量
38
审稿时长
6-12 weeks
期刊介绍: The Journal of Sulfur Chemistry is an international journal for the dissemination of scientific results in the rapidly expanding realm of sulfur chemistry. The journal publishes high quality reviews, full papers and communications in the following areas: organic and inorganic chemistry, industrial chemistry, materials and polymer chemistry, biological chemistry and interdisciplinary studies directly related to sulfur science. Papers outlining theoretical, physical, mechanistic or synthetic studies pertaining to sulfur chemistry are welcome. Hence the target audience is made up of academic and industrial chemists with peripheral or focused interests in sulfur chemistry. Manuscripts that truly define the aims of the journal include, but are not limited to, those that offer: a) innovative use of sulfur reagents; b) new synthetic approaches to sulfur-containing biomolecules, materials or organic and organometallic compounds; c) theoretical and physical studies that facilitate the understanding of sulfur structure, bonding or reactivity; d) catalytic, selective, synthetically useful or noteworthy transformations of sulfur containing molecules; e) industrial applications of sulfur chemistry; f) unique sulfur atom or molecule involvement in interfacial phenomena; g) descriptions of solid phase or combinatorial methods involving sulfur containing substrates. Submissions pertaining to related atoms such as selenium and tellurium are also welcome. Articles offering routine heterocycle formation through established reactions of sulfur containing substrates are outside the scope of the journal.
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