Dual-active-site composite of Ti-mesoporous silica-supported phosphomolybdic acid as an oxidative desulfurization catalyst

IF 1.4 4区化学 Q4 CHEMISTRY, INORGANIC & NUCLEAR

Phosphorus, Sulfur, and Silicon and the Related Elements Pub Date : 2025-05-04 DOI:10.1080/10426507.2025.2498441

Zelong Liu , Peihang Shen , Chunlai Liu , Na Wang , Jianglei Hu , Yibo Zhang

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Abstract

In this work, Ti-Mesoporous silica (Ti@SBA15)-supported phosphomolybdic acid (HPMo) composites, HPMo/Ti@SBA15, were synthesized by a one-pot hydrothermal method. The physical and chemical properties of the composites were characterized by XRD, N₂ adsorption-desorption, FT-IR spectroscopy, TEM, SEM, and XPS. The results showed that the pores and surface of SBA-15 were loaded with HPMo and Ti(IV), and the dual active sites were well dispersed without agglomeration. The HPMo/Ti@SBA15 composite exhibited better performance than the single active site catalysts, HPMo@SBA15 and TiO₂@SBA15, with high catalytic activity and stable reusability during oxidative desulfurization. The dispersion of the dual active components within the SBA-15 cages and synergistic catalytic effects between the two gave the composites catalytic activity and stability in the desulfurization experiments with different sulfur-containing substrates.

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钛-介孔硅负载磷酸钼酸双活性位点复合氧化脱硫催化剂

本文采用一锅水热法制备了钛介孔二氧化硅（Ti@SBA15）负载磷酸钼酸（HPMo）复合材料HPMo/Ti@SBA15。采用XRD、N2吸附-脱附、FT-IR、TEM、SEM和XPS表征了复合材料的理化性质。结果表明：SBA-15的孔隙和表面负载HPMo和Ti(IV)，双活性位点分散良好，无团聚现象；HPMo/Ti@SBA15复合材料的氧化脱硫性能优于单一活性位点的催化剂HPMo@SBA15和TiO2@SBA15，具有较高的催化活性和稳定的可重复使用性。双活性组分在SBA-15笼内的分散和两者之间的协同催化作用，使复合材料在不同含硫底物的脱硫实验中具有较高的催化活性和稳定性。

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来源期刊

Phosphorus, Sulfur, and Silicon and the Related Elements 化学-无机化学与核化学

CiteScore

2.60

自引率

7.70%

发文量

103

审稿时长

2.1 months

期刊介绍： Phosphorus, Sulfur, and Silicon and the Related Elements is a monthly publication intended to disseminate current trends and novel methods to those working in the broad and interdisciplinary field of heteroatom chemistry.