| 反应条件下多孔催化剂上有效扩散系数及曲节因子的分析计算 |
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| 引用本文： | 王桂荣,辛峰,王富民,廖晖,赵学明,李绍芬.反应条件下多孔催化剂上有效扩散系数及曲节因子的分析计算[J].化学反应工程与工艺,2001,17(3):216-221. |
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| 作者姓名： | 王桂荣 辛峰 王富民 廖晖 赵学明 李绍芬 |
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| 作者单位： | 天津大学化工学院, |
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| 基金项目： | 国家自然科学基金资助项目 (No.2 9776 0 38)，中国石油化工集团公司资助项目 (No. 5 980 0 7) |
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| 摘 要： | 采用CDS－810微反系统，在实验条件为：常压、氢苯比3.0-8.0、温度363.15K-453.15K时，进行了在四种不同粒度Ni/Al2O3催化剂上的气相苯加氢反应，利用实验数据计算了不同反应组成、不同反应速率时苯的有效扩散系数、反应死区及催化剂的曲节因子。计算结果表明：有效扩散系数不随反应速率改变，多孔催化剂的曲节因子可以看作多孔催化剂的结构参数，不随反应条件变化。
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| 关 键 词： | 有效扩散系数 曲节因子 反应死区 Ni／Al2O3催化剂 计算 多孔催化剂 氧化铝负载镍催化剂 苯 加氢反应 |
| 文章编号： | 1001-7631(2001)03-216-06 |
| 修稿时间： | 2000年10月31 |
THE ANALYSIS OF THE EFFECTIVE DIFFUSIVITY AND THE TORTUOSITY OF POROUS CATALYSTS ON REATION CONDITIONS |
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| WANG Gui-rong,XIN Feng,WANG Fu-min,LIAO Hui,ZHAO Xue-ming,LI Shao-fen.THE ANALYSIS OF THE EFFECTIVE DIFFUSIVITY AND THE TORTUOSITY OF POROUS CATALYSTS ON REATION CONDITIONS[J].Chemical Reaction Engineering and Technology,2001,17(3):216-221. |
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| Authors: | WANG Gui-rong XIN Feng WANG Fu-min LIAO Hui ZHAO Xue-ming LI Shao-fen |
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| Abstract: | Using the CDS-810 type of catalyst evaluation system equiped with a internal recycle gradientless reactor, under the conditions of temperatures range of 363.15K~453.15K,molar ratio ranges of hydrogen to benzene of 3.0~8.0,and pressure of 0.1MPa,the benzene hydrogenation reaction on four different sizes or forms of catalysts was studied. From experimental data of benzene hydrogenation reaction over different size of Ni/Al 2O 3 catalysts,the effective diffusivities,reaction dead zones and tortousities was calculated on different reaction conditions. The results showed that the effective diffusivity does not vary with reaction rates. It was also experimentally determined tortuosity of the porous catalyst does not vary with reaction conditions and it can be considered as a representative of space structure of porous materials. |
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| Keywords: | effective diffusivity tortuosity factor reaction dead zone Ni/Al 2O 3 catalyst |
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