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为实现石化行业甲苯废气的高效治理与溶剂资源化回收，采用溶剂热法合成锆基金属有机框架材料UiO-66,以石化行业典型VOCs污染物甲苯为代表，探究不同反应温度和反应物配比对UiO-66吸附性能的影响。实验结果表明，在100℃、n(Zr4+):n(H_2BDC)=1∶1.2条件下合成的UiO-66,其比表面积提升了32.6%,甲苯吸附量提高46.9%,显示出对VOCs优异的吸附潜能。经过5次吸脱附循环实验后，吸附率仍可达91.1%,表明材料在实际工业再生条件下具有良好的稳定性。通过动力学和吸附机理分析，优化的合成条件增加了材料的孔隙率，提供了更多不饱和金属位点，从而显著提高了对甲苯等芳香烃类VOCs的吸附性能，为开发高效、稳定、可再生的VOCs吸附材料提供了明确的工艺参数与性能数据，有助于推动UiO-66在石化行业废气处理工程中的实际应用。
Abstract：To achieve efficient treatment and solvent resource recovery of toluene-containing exhaust gas in the petrochemical industry, the zirconium-based metal-organic framework material UiO-66 was synthesized by the solvothermal method. Taking toluene, a typical VOCs pollutant in the petrochemical industry, as the test material, the effects of different reaction temperatures and reactant ratios on the adsorption performance of UiO-66 were explored. The experimental results showed that UiO-66 synthesized under the conditions of 100 ℃ and n(Zr4+)∶n(H_2BDC)=1∶1.2 exhibited a 32.6% increase in specific surface area and a 46.9% enhancement in toluene adsorption capacity, demonstrating excellent adsorption potential for VOCs. After five adsorption-desorption cycles, the adsorption rate remained at 91.1%, indicating good stability of the material under actual industrial regeneration conditions. Through kinetic and adsorption mechanism analyses, the optimized synthesis conditions increased the porosity of the material, providing more unsaturated metal sites, thereby significantly improving the adsorption performance for aromatic VOCs such as toluene. This work provided clear process parameters and performance data for developing efficient, stable, and renewable VOCs adsorption materials, contributing to promoting the practical application of UiO-66 in exhaust gas treatment engineering within the petrochemical industry.
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基本信息:
中图分类号:TQ424;X701
引用信息:
[1]栾健,王永强,曹佳玮.溶剂热法合成UiO-66及其对甲苯的高效吸附性能研究[J].安全、健康和环境,2026,26(02):35-42.
基金信息:
山东省重点研发计划(2024CXGC010408),高效催化湿式氧化关键技术开发与工业示范