Integrated oxidative-adsorptive desulfurization of model and real fuel oils over a Zn-impregnated hydroxyapatite-activated carbon (Zn/HA-AC) composite

IF 2.1 3区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Journal of Sulfur Chemistry Pub Date : 2024-03-03 DOI:10.1080/17415993.2023.2264439

Taj Muhammad , Waqas Ahmad , Imtiaz Ahmad , Muhammad Yaseen

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引用次数: 0

Abstract

Herein, a Zn-impregnated hydroxyapatite-activated carbon (Zn/HA-AC) composite catalyst was fabricated and was, in turn, applied for the desulfurization of a model and real oil samples via the integrated adsorptive-oxidative desulfurization strategy. Activity results revealed that Zn/HA and AC (25:75) realized 76.7% dibenzothiophene (DBT) adsorptive desulfurization at 50 °C in 60 min reaction time at an adsorbent dose of 0.14 g/20 mL of feed. Zn/HA-AC(25:75) composite catalyst was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, energy-dispersive X-ray analysis, and scanning electron microscopy analysis. In the oxidative desulfurization (ODS) combined with adsorptive desulfurization experiments, under the optimum conditions of 45 ^oC temperature for 60 min and a catalyst dose of 0.1 g/20 mL of feed using H₂O₂ and HCOOH, Zn/HA-AC (25:75) achieved 93% DBT conversion. Under these optimized experimental parameters, the adsorptive desulfurization and catalytic ODS performance (% DBT conversion) of Zn/HA-AC (25:75) for real gasoline, kerosene, and diesel oil reached 18, 31 and 15%, and 31.66, 55.31 and 11.19%, respectively. Contrary to this, under the integrated catalytic-oxidative-adsorptive experiments, the desulfurization performance of Zn/HA-AC (25:75) for gasoline, kerosene, and diesel oil reached 61, 41, and 34%, respectively.

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在锌浸渍羟基磷灰石活性炭（Zn/HA-AC）复合材料上对模型和实际燃料油进行氧化吸附综合脱硫处理

本文制备了一种 Zn 浸渍羟基磷灰石活性炭（Zn/HA-AC）复合催化剂，并通过吸附-氧化一体化脱硫策略将其应用于模型和实际油样的脱硫。活性结果表明，Zn/HA 和 AC（25:75）在 50 °C、60 分钟反应时间内实现了 76.7% 的二苯并噻吩（DBT）吸附脱硫，吸附剂剂量为 0.14 克/20 毫升进料。傅立叶变换红外光谱、X 射线衍射、能量色散 X 射线分析和扫描电子显微镜分析对 Zn/HA-AC(25:75) 复合催化剂进行了表征。在氧化脱硫（ODS）与吸附脱硫相结合的实验中，在温度为 45 oC、时间为 60 分钟、催化剂剂量为 0.1 g/20 mL（使用 H2O2 和 HCOOH 的进料）的最佳条件下，Zn/HA-AC（25:75）的 DBT 转化率达到 93%。在这些优化实验参数下，Zn/HA-AC（25:75）对实际汽油、煤油和柴油的吸附脱硫和催化 ODS 性能（DBT 转化率）分别达到 18%、31% 和 15%，以及 31.66%、55.31% 和 11.19%。与此相反，在催化-氧化-吸附综合实验中，Zn/HA-AC（25:75）对汽油、煤油和柴油的脱硫性能分别达到 61%、41% 和 34%。

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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.