| 采用微型反应装置与色谱联用的方法评价ZSM-5分子筛催化剂 |
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| 引用本文： | 刘晓畅,于长顺,许绚丽,王少君. 采用微型反应装置与色谱联用的方法评价ZSM-5分子筛催化剂[J]. 大连工业大学学报, 2012, 31(4): 279-282 |
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| 作者姓名： | 刘晓畅 于长顺 许绚丽 王少君 |
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| 作者单位： | 大连工业大学轻工与化学工程学院,辽宁大连,116034 |
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| 基金项目： | 国家重点基础研究发展计划(973)项目，辽宁省教育厅科学研究计划资助项目，大连市科技计划项目 |
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| 摘 要： | 采用乙醇脱水生成气态乙烯,使用微型反应装置与色谱联用的方法对ZSM-5分子筛催化剂的性能进行评价,探讨了温度、进料速率对催化剂的活性和选择性的影响。结果表明,分子筛催化剂在乙醇脱水反应中比氧化铝具有更低的反应温度、更高的操作空速和更高的单程反应转化率和乙烯收率。特别是ZSM-5分子筛催化剂因其具有亲油疏水性,在催化脱水性能方面更具有优势。反应的最佳温度为340℃,最佳进料速率为0.4mL/min。反应的瞬时转化率随温度的升高而升高,随进料速率的增加而降低;反应的转化速率及催化剂的瞬时选择性随温度的升高而升高,随进料速率的增加而增加。
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| 关 键 词： | 分子筛催化剂 选择性 进料速率 |
Evaluation of ZSM-5 molecular sifter catalyst by micro devices and chromatography coupled reaction method |
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| LIU Xiao-chang , YU Chang-shun , XU Xuan-li , WANG Shao-jun. Evaluation of ZSM-5 molecular sifter catalyst by micro devices and chromatography coupled reaction method[J]. Journal of Dalian Dalian Polytechnic University, 2012, 31(4): 279-282 |
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| Authors: | LIU Xiao-chang YU Chang-shun XU Xuan-li WANG Shao-jun |
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| Affiliation: | School of Light Industry and Chemical Engineering,Dalian Polytechnic University,Dalian 116034,Chin |
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| Abstract: | The ZSM-5 molecular sifter catalyst was characterized using micro response device and chromatographic coupled method with ethylene for reactant.The results showed that low temperature,high operating air speed and high conversion and yield was obtained in dehydrated alcohol when molecular sifter was used compared with alumina.Due to lipophilicity,the instantaneous conversion was increased with temperature and decreased with feeding rate.The best reaction temperature and feeding rate were 340 ℃ and 0.4 mL/min.The conversion speed and the instantaneous selectivity of catalyst was raised with increasing temperature and feeding rate. |
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| Keywords: | molecular catalyst selectivity feeding rate |
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