钙铝水滑石负载酞菁四磺酰胺钴非均相催化剂氧化脱硫废硫酸烧碱

IF 2.8 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology Pub Date : 2025-02-26 DOI:10.1002/jctb.7840

Ruiqi Huang, Zhaoyang Lu, Can Xu, Shuaiting Liang, Honglei Yuan, Geshan Zhang, Lihui Jia, Jun Yuan

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引用次数: 0

摘要

背景石油化工和其他化工行业的废硫酸烧碱（SSC）通常含有高浓度的硫离子（S2−）和烧碱（NaOH），需要进行有效的处理。本文采用一锅法将酞菁四磺酰胺钴（CoPcSA）负载于钙铝水滑石（cal - ldhs）上，成功合成了CoPcSA/CaAl-LDHs催化剂。材料的表征包括粉末x射线衍射、傅里叶变换红外光谱、扫描电镜和x射线光电子能谱。结果考察了反应温度、催化剂用量、曝气率等参数对催化活性的影响，优化后的反应温度分别为75℃、1.5 mmol L−1和2.5 L min−1。CoPcSA/CaAl-LDHs对S2−的去除率非常高：在极高的S2−浓度（24000 mg L−1）下，可达到95.0%的S2−去除率。此外，该催化剂在重复使用8次后仍具有较高的稳定性和可重复使用性。结论CoPcSA/CaAl-LDHs具有良好的催化活性和稳定性，具有良好的应用潜力。©2025化学工业学会（SCI）。

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Heterogeneous catalyst of cobalt phthalocyanine tetrasulfonamide loaded on Ca–Al hydrotalcites for oxidative desulfurization of spent sulfidic caustic

Background

Spent sulfidic caustic (SSC) from petrochemical and other chemical industries usually contains high concentrations of sulfur ion (S²⁻) and caustic soda (NaOH), which requires effective treatment. Here a CoPcSA/CaAl-LDHs catalyst was successfully synthesized by using a facile one-pot approach for loading cobalt phthalocyanine tetrasulfonamide (CoPcSA) on Ca–Al hydrotalcites (CaAl-LDHs). The material characterization included powder X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy and X-ray photoelectron spectroscopy.

Results

The effect of various parameters such as reaction temperature, catalyst dosage and aeration rate on the catalytic activity was investigated and optimized to be 75 °C, 1.5 mmol L⁻¹ and 2.5 L min⁻¹, respectively. CoPcSA/CaAl-LDHs shows very high catalytic efficiency for S²⁻ removal: a 95.0% S²⁻ removal can be achieved at extremely high concentration of S²⁻ (24 000 mg L⁻¹). In addition, the catalyst exhibits high stability and reusability even after 8 cycles of reuse.

Conclusion

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来源期刊

Journal of chemical technology and biotechnology 工程技术-工程：化工

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.