| 13X分子筛上硫化促进剂的动态行为研究 |
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| 引用本文： | 段雪,朱娅玲.13X分子筛上硫化促进剂的动态行为研究[J].高等学校化学学报,1992,13(7):968-971. |
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| 作者姓名： | 段雪 朱娅玲 |
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| 作者单位： | 北京化工学院应用化学系，北京化工学院应用化学系，北京化工学院应用化学系 北京，100029，北京，100029，北京，100029 |
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| 基金项目： | 国家自然科学基金资助课题. |
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| 摘 要： | 采用TPD技术对13X分子筛的表面酸性及3种硫化促进剂在其表面上的动态行为进行了研究。结果表明,13X分子筛具有吸附能量高低不等的多种表面酸性吸附部位。对于吸附型缓释交联剂,有效的表面吸附部位为弱化学吸附位.表观脱附动力学计算结果表明,不同的硫化促进剂从13X分子筛表面有效部位脱出时,其动力学特征亦不同,但均与晶内扩散有关,表观脱附活化能(kJ/mol)分别为51.5(二乙胺)、68.6(环己胺)和78.3(乙二胺)。
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| 关 键 词： | 吸附 脱附 分子筛 硫化促进 |
Dynamic Studies on Accelerating Agents for Vulcanization on 13X Zeolites |
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| DUAN Xue,ZHU Ya-ling,SUN Peng.Dynamic Studies on Accelerating Agents for Vulcanization on 13X Zeolites[J].Chemical Research In Chinese Universities,1992,13(7):968-971. |
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| Authors: | DUAN Xue ZHU Ya-ling SUN Peng |
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| Abstract: | In this paper, the acid character on the surface of 13X zeolites and the dynamic behavior of accelerating agents for vulcanization on 13X zeolites are studied by TPD. The results obtained show that there are differenet acid sites on the zeolites for the base adsorbates, such as B acid, L acid, mixing B and L acids, and weak chemical adsorption. The effective sites on the surface for adsorption is the sites of weak chemical adsorption for slow-release cross linked agents of adsorption type. It is obtained that different accelerating agents of vulcanization have different dynamic character for their desorption from the surface of 13X zeolites and there is a crystal diffusion in the desorption. |
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| Keywords: | Adsorption Desorption Zeolites Accelerating agents of vulcanization |
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