| ZnO/Al_2O_3催化剂乙醇水蒸气重整反应失活研究 |
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| 引用本文： | 陈孟楠.ZnO/Al_2O_3催化剂乙醇水蒸气重整反应失活研究[J].广州化工,2014(11):106-107,139. |
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| 作者姓名： | 陈孟楠 |
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| 作者单位： | 重庆工业职业技术学院,重庆401120 |
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| 摘 要： | 采用浸渍法制备了一系列ZnO/Al2O3催化剂,考察了该催化剂在水醇摩尔比为3、常压、450℃工作条件下乙醇水蒸气重整(SRE)制氢反应活性及稳定性。结果表明,ZnO负载量达到10wt%时,C2H5OH转化率最高,但催化剂在160 min内出现明显失活。利用BET等表征手段考察了反应前后催化剂的物理化学性质,并通过失活模型模拟,提出了ZnO/Al2O3催化剂上SRE制氢反应的失活原因。
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| 关 键 词： | 乙醇 氧化锌 三氧化二铝 失活 |
Research on the Deactivation of ZnO/Al2 O3 Catalysts for Steam Reforming of Ethanol |
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| CHEN Meng-nan.Research on the Deactivation of ZnO/Al2 O3 Catalysts for Steam Reforming of Ethanol[J].GuangZhou Chemical Industry and Technology,2014(11):106-107,139. |
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| Authors: | CHEN Meng-nan |
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| Affiliation: | CHEN Meng-nan (Chongqing Industry Polytechnic College, Chongqing 401120, China) |
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| Abstract: | ZnO/Al2 O3 catalysts with different ZnO loadings were synthesized by impregnation method.The performance and durability of steam reforming of ethanol （ SRE） over prepared catalysts were evaluated with n （ H2 O）：n（ C2 H5 OH） molar ratios of 3：1 at 450 ℃ and atmospheric pressure.The results showed that the highest C 2 H5 OH conversion was obtained at ZnO loading of 10 wt%.However , the performance deactivated rapidly after 160 min for all ZnO/Al2 O3 catalysts.BET surface areas of catalysts before and after the SRE reaction were tested.Finally, the cause of the deactivation on ZnO/Al2 O3 catalysts was provided by the deactivation model. |
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| Keywords: | ethanol ZnO alumina deactivation |
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