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| 改性Pd/USY分子筛的甲苯吸脱附性能研究 |
| Study on Absorption and Desorption of Toluene on Modified Pd/USY Molecular Sieves |
| 投稿时间：2019-03-13 |
| DOI： |
| 中文关键词: USY分子筛 金属改性 Pd-Ce-Zr 吸附与脱附 |
| 英文关键词: ultra-stable Y (USY) zeolites metals modification Pd-Ce-Zr adsorption and desorption |
| 基金项目:云南省应用基础研究计划青年项目(2018FD140) |
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| 中文摘要: |
| 制备了载钯的超稳Y型(USY)分子筛材料Pd/USY，并组合其它贱金属进行改性，得到系列二元与多元改性Pd/USY；利用N2物理吸附仪、高分辨透射电子显微镜(TEM)、热重分析(TG)仪、化学吸附仪和X射线衍射(XRD)仪等，表征分析了系列改性Pd/USY分子筛对甲苯的吸附与脱附性能。结果表明，改性后的Pd-Ce-Zr/USY分子筛吸附性能最好，甲苯饱和吸附量高达290.7 mg/g，甲苯高温脱附温度范围为290~360℃，其最佳改性条件为钯负载质量分数为1%，pH值调节至8，煅烧温度为450℃。 |
| 英文摘要: |
| The palladium-loaded ultrastable Y molecular sieve, Pd/USY and binary and multi-component modified Pd/USY by introducing other base metals were prepared. The adsorption and desorption of toluene on the modified Pd/USY molecular sieves was characterized by N2 physical adsorption, high resolution transmission electron microscopy (TEM), thermo gravimetric analysis (TG), chemical adsorption and X-ray diffraction (XRD). The results showed that the modified molecular sieve Pd-Ce-Zr/USY had the highest adsorption capacity, and that its saturated adsorption capacity of toluene was up to 290.7 mg/g. The high temperature desorption temperature range of toluene was 290 to 360℃. The optimum modification conditions are: 1% of palladium loading, a pH of 8, and 450℃ of calcination temperature. |
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