Deep desulfurization of real fuel oils over tin-impregnated graphene oxide-hydrogen peroxide and formic acid catalyst-oxidant system

IF 2.1 3区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Journal of Sulfur Chemistry Pub Date : 2023-04-01 DOI:10.1080/17415993.2022.2131429

Muhammad Yaseen , Sidra Subhan , Kifayatullah Khan , Muhammad Usman Farooq , Waqas Ahmad , Humaira Seema , Rafia Naz , Fazle Subhan

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引用次数: 8

Abstract

Herein, Tin-impregnated graphene oxide (Sn/GO) composite was designed and tested for the catalytic removal of sulfides from the simulated and real commercial oils in the hydrogen peroxide and formic acid (HCOOH/H₂O₂) oxidation system. The prepared GO and Sn/GO were characterized in terms of surface morphology and other catalytic properties, which confirmed that the Sn/GO catalyst has a large surface area and more surface functional groups than GO. The desulfurization activity of the Sn/GO-HCOOH/H₂O₂ system was analyzed for the model dibenzothiophene (DBT) and real commercial oil at different substrate concentrations, time, temperature, pH, and oxidant and catalyst doses. The results showed that the Sn/GO-HCOOH/H₂O₂ system removed 97% DBT from the model oil and accumulative sulfur of 90%, 69%, and 61%, respectively, from gasoline, diesel, and kerosene oil employing 0.03 g/10 mL catalyst, 2 mL of H₂O₂/HCOOH in 50 min at 50°C, and pH 3. Sn/GO could be recycled up to five consecutive runs retaining more than 57% efficiency. Due to its environmental greenness, ease of preparation, and cost-effectiveness, this unique catalyst-oxidant system can be envisioned for the oxidation of sulfides from real oils.

Research Highlights

Pristine and Sn-loaded GO composite were synthesized and characterized.
The Sn/GO-HCOOH/H₂O₂ system oxidized 97 and 90 % DBT from the model and real oil.
O²⁻ radicals generated due to synergism between Sn/GO and HCOOH/H₂O₂ species.
The Sn/GO-HCOOH/H₂O₂ system remained active for five successive reuses.

查看原文本刊更多论文

含锡氧化石墨烯-过氧化氢和甲酸催化剂-氧化剂体系对实际燃料油的深度脱硫

本文设计并测试了锡浸渍氧化石墨烯(Sn/GO)复合材料在过氧化氢和甲酸(HCOOH/H2O2)氧化体系中催化脱除模拟和真实商业油中的硫化物。对制备的GO和Sn/GO进行了表面形貌和其他催化性能的表征，证实了Sn/GO催化剂比GO具有更大的表面积和更多的表面官能团。分析了Sn/GO-HCOOH/H2O2体系在不同底物浓度、时间、温度、pH、氧化剂和催化剂剂量下对模型二苯并噻吩(DBT)和实际商品油的脱硫活性。结果表明，在催化剂用量为0.03 g/10 mL、H2O2/HCOOH用量为2 mL、温度为50℃、pH为3、反应时间为50 min的条件下，Sn/GO-HCOOH/H2O2体系对模型油的DBT去除率为97%，对汽油、柴油和煤油的累积硫去除率分别为90%、69%和61%。Sn/GO可以连续回收5次，效率超过57%。由于其绿色环保，易于制备和成本效益，这种独特的催化剂-氧化剂系统可以用于氧化真实油中的硫化物。合成了纯净氧化石墨烯和负载锡氧化石墨烯复合材料，并对其进行了表征。Sn/GO-HCOOH/H2O2体系分别氧化了模型油和实际油中97%和90%的DBT。Sn/GO与HCOOH/H2O2协同作用产生的O2−自由基。Sn/GO-HCOOH/H2O2系统在连续5次重复使用中保持活性。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Sulfur Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

4.10

自引率

9.10%

发文量

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.