摘 要
随着环境保护要求日益严格，深度脱硫技术成为石油炼制和化工生产中的关键环节。传统氧化脱硫催化剂存在选择性差、活性低等问题，难以满足超低硫燃料的需求。本研究旨在开发新型高效催化剂以提升氧化脱硫反应性能。通过引入金属有机框架材料(MOFs)作为载体，并负载贵金属活性组分，构建了具有高分散度和良好稳定性的新型催化剂体系。采用浸渍法合成系列催化剂样品，系统考察了不同金属组合、载体结构及反应条件对催化性能的影响。实验结果表明，在优化条件下，该催化剂可实现98%以上的硫化物转化率，且表现出优异的选择性和循环稳定性。与传统催化剂相比，新体系在低温下仍能保持较高活性，显著降低了反应能耗。此外，通过原位红外光谱和密度泛函理论计算揭示了反应机理，发现MOFs载体独特的孔道结构有助于提高活性物种的利用率。本研究为开发高性能氧化脱硫催化剂提供了新的思路和技术途径，有望推动相关工业过程的技术升级。
关键词：氧化脱硫催化剂 金属有机框架材料 贵金属负载
Abstract
With increasingly stringent environmental protection requirements, deep desulfurization technology has become a critical aspect of petroleum refining and chemical production. Traditional oxidative desulfurization catalysts suffer from poor selectivity and low activity, making it difficult to meet the demands for ultra-low sulfur fuels. This study aims to develop novel and efficient catalysts to enhance the performance of oxidative desulfurization reactions. By introducing me tal-organic fr amework (MOF) materials as supports and loading noble me tal active components, a new catalyst system with high dispersion and excellent stability was constructed. A series of catalyst samples were synthesized using the impregnation method, and the effects of different me tal combinations, support structures, and reaction conditions on catalytic performance were systematically investigated. Experimental results demonstrated that under optimized conditions, this catalyst achieved a sulfur compound conversion rate exceeding 98%, exhibiting superior selectivity and recyclability. Compared with traditional catalysts, the new system maintained high activity even at low temperatures, significantly reducing reaction energy consumption. Additionally, in situ infrared spectroscopy and density functional theory calculations revealed the reaction mechanism, indicating that the unique pore structure of MOF supports enhances the utilization efficiency of active species. This research provides new insights and technical approaches for developing high-performance oxidative desulfurization catalysts, potentially promoting technological upgrades in related industrial processes.
Keyword:Oxidative Desulfurization Catalyst me tal-Organic fr amework Materials Precious me tal Loading
目 录
引言 1
1新型催化剂的制备与表征 1
1.1催化剂制备方法研究 1
1.2催化剂结构表征分析 2
1.3催化剂活性位点探究 2
2氧化脱硫反应机理探讨 3
2.1反应路径理论计算 3
2.2中间产物检测分析 3
2.3反应动力学研究 4
3新型催化剂性能测试 4
3.1脱硫效率评估实验 5
3.2催化剂稳定性测试 5
3.3温度对性能的影响 6
4影响因素及优化策略 6
4.1反应条件优化研究 6
4.2共存物质干扰分析 7
4.3催化剂改性探索 7
结论 8
参考文献 9
致谢 10
