创新型膦酸盐席夫碱吸附剂的制备及其在废加氢脱硫催化剂中的应用

IF 2.8 4区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Journal of chemical technology and biotechnology Pub Date : 2024-07-14 DOI:10.1002/jctb.7702
Huda M. Younis
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引用次数: 0

摘要

为了研究从水和加氢脱硫催化剂中回收钼酸盐,一种新合成的膦酸盐席夫碱,4,4′-(((2,2-二甲基丙烷-1、3-二基)双(偶氮苯基))双(甲基苯基))双(2-甲氧基苯酚)(HMI)和 4-(((3-((4-(((S)-羟基羟基磷酰)氧基)-3-甲氧基苄基)氨基)-2,2-二甲基丙基)亚氨基)甲基)-2-甲氧基苯基膦酸氢盐(HIMP)。本研究旨在利用傅立叶变换红外光谱(FTIR)、热重分析(TGA)、质谱分析(GC-MS)、荧光传递光谱、扫描电子显微镜(SEM)以及 1H-NMR、13C-NMR 和 31P-NMR 等多种表征方法评估这种合成化合物的结构和性质。在 pH 值为 2、作用时间为 40 分钟、吸附剂用量为 0.06 克、环境温度下,吸附效果达到最佳。新设计的吸附剂的吸附容量(Qe)为每克 372.54 毫克钼,经验数据符合 Langmuir 和 D-R 吸附模型。钼酸盐吸附动力学遵循二阶动力学。此外,还研究了热力学方面的问题,包括 ΔG°、ΔS° 和 ΔH°,从而对吸附过程的能量动态有了更深入的了解。该研究强调了改性膦酸盐席夫碱作为从溶液和废加氢脱硫催化剂中消除钼酸盐的重要吸附剂的潜力。研究结果为吸附剂的吸附动力学、热力学和选择性提供了重要的见解,加深了我们对钼酸盐回收过程及其更广泛应用的理解。© 2024 化学工业学会 (SCI)。
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Fabrication of an innovative phosphonate Schiff base adsorbent for molybdenum adsorption and its applications for molybdenum adsorption from spent hydrodesulfurization catalyst

BACKGROUND

To investigate the recovery of molybdate from water and hydrodesulfurization catalysts, a novel synthesized phosphonate Schiff base, 4,4′-(((2,2-dimethylpropane-1,3-diyl) bis(azaneylylidene)) bis(methaneylylidene)) bis(2-methoxyphenol) (HMI) and 4-(((3-((4-(((S)-hydroxyhydrophosphoryl)oxy)-3-methoxybenzylidene) amino)-2,2-dimethylpropyl)imino)methyl)-2-methoxyphenyl hydrogen phosphonate (HIMP), was utilized. This study aimed to assess the structural and property aspects of this synthesized compound using diverse characterizations, including FTIR, Thermogravimetric Analysis (TGA), mass spectrometry (GC–MS), fluorescence transfer spectra, scanning electron microscopy (SEM), and 1H-NMR, 13C-NMR, and 31P-NMR.

RESULTS

The study systematically examined several factors controlling molybdate recovery, including temperature, adsorbent dosage, pH, interaction time, and molybdate concentration using the batch technique. Optimal sorption effectiveness was achieved at pH 2, with an interaction time of 40 min, a 0.06 g adsorbent dose, at ambient temperature. The newly devised adsorbent exhibited an impressive adsorption capacity (Qe) of 372.54 mg of Mo per gram, with empirical data fitting the Langmuir and D-R adsorption models. The kinetics of molybdate uptake followed second-order kinetics. Thermodynamic aspects, including ΔG°, ΔS°, and ΔH°, were also investigated, providing appreciated perceptions into the energetic dynamics of the sorption process. Additionally, molybdate adsorption in the occurrence of other ions was explored, highlighting the selectivity of the modified phosphonate Schiff base for molybdate removal.

CONCLUSION

The study underscores the potential of the modified phosphonate Schiff base as a crucial adsorbent for molybdate elimination from both solutions and spent hydrodesulfurization catalysts. The findings offer important insights into the adsorption kinetics, thermodynamics, and selectivity of the adsorbent, enhancing our understanding of molybdate recovery processes and their broader applications. © 2024 Society of Chemical Industry (SCI).

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来源期刊
CiteScore
7.00
自引率
5.90%
发文量
268
审稿时长
1.7 months
期刊介绍: Journal of Chemical Technology and Biotechnology(JCTB) is an international, inter-disciplinary peer-reviewed journal concerned with the application of scientific discoveries and advancements in chemical and biological technology that aim towards economically and environmentally sustainable industrial processes.
期刊最新文献
Issue Information In Focus: Materials and the Environment Symposium (XXXI IMRC México) Issue Information Adsorption behavior of graphite‐like walnut shell biochar modified with ammonia for ciprofloxacin in aqueous solution Eco‐friendly approaches for synthesis of indolyl 1H‐pyrroles using rice‐husk‐derived carbonaceous sulfonation as the green catalyst
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