| Cu(I)Y分子筛表面酸性对其吸附脱硫性能的影响 |
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| 引用本文： | 王旺银,潘明雪,秦玉才,王凌涛,宋丽娟.Cu(I)Y分子筛表面酸性对其吸附脱硫性能的影响[J].物理化学学报,2011,27(5):1176-1180. |
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| 作者姓名： | 王旺银 潘明雪 秦玉才 王凌涛 宋丽娟 |
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| 作者单位： | Liaoning Key Laboratory of Petrochemical Engineering, Liaoning Shihua University, Fushun 113001, Liaoning Province, P. R. China |
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| 基金项目： | 国家自然科学基金(20776064,20976077); 国家重点基础研究发展规划(973)(2007CB216403)资助项目~~ |
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| 摘 要： | 用固相离子交换(SSIE)和液相离子交换(LPIE)法制备了不同离子交换度的Cu(I)Y分子筛, 采用吡啶吸附红外光谱(Py-IR)表征了分子筛的表面酸性, 并用固定床吸附穿透实验评价了分子筛的吸附脱硫性能. 结果表明, 不同的离子交换法改性后, Cu(I)Y分子筛仍然保持了完整的Y型分子筛结构. Cu+的交换量和表面酸性的分布显著地影响分子筛的吸附脱硫性能, 固相离子交换后随离子交换度的增加, 分子筛表面Brönsted (B)酸逐渐转化为Lewis (L)酸, 吸附性能增强. 对不同离子交换法制备的Cu(I)Y分子筛吸附脱硫性能与表面酸性关联后, 发现分子筛表面B酸量减少, 提高了分子筛的吸附脱硫活性.
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| 关 键 词： | Cu(I)Y分子筛 吸附脱硫 表面酸性 固相离子交换 吡啶吸附红外光谱 |
| 收稿时间： | 2010-11-03 |
| 修稿时间： | 2011-03-22 |
Effects of Surface Acidity on the Adsorption Desulfurization of Cu(I)Y Zeolites |
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| WANG Wang-Yin PAN Ming-Xue QIN Yu-Cai WANG Ling-Tao SONG Li-Juan.Effects of Surface Acidity on the Adsorption Desulfurization of Cu(I)Y Zeolites[J].Acta Physico-Chimica Sinica,2011,27(5):1176-1180. |
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| Authors: | WANG Wang-Yin PAN Ming-Xue QIN Yu-Cai WANG Ling-Tao SONG Li-Juan |
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| Institution: | Liaoning Key Laboratory of Petrochemical Engineering, Liaoning Shihua University, Fushun 113001, Liaoning Province, P. R. China |
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| Abstract: | Cu(I)Y zeolites with different degrees of ion exchange were prepared by solid state ion exchange (SSIE) and liquid phase ion exchange (LPIE). The surface acidity of the Cu(I)Y zeolite was characterized by adsorbed pyridine infrared spectroscopy (Py-IR) and the adsorbents desulfurization capabilities were evaluated by a fixed-bed adsorption experiment. We observed that after modification using different ion exchange methods the Cu(I)Y zeolites retained the structure of the Y zeolite completely. The amount of... |
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| Keywords: | Cu(I)Y zeolite Adsorption desulfurization Surface acidity Solid state ion exchange Adsorbed pyridine infrared spectrum |
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