| 纳米Zn/HZSM-5分子筛催化丙烷芳构化 |
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| 引用本文： | 侯焕娣,黄崇品,陈标华,李英霞.纳米Zn/HZSM-5分子筛催化丙烷芳构化[J].化学反应工程与工艺,2006,22(4):300-304. |
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| 作者姓名： | 侯焕娣 黄崇品 陈标华 李英霞 |
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| 作者单位： | 北京化工大学化工资源有效利用国家重点实验室,北京,100029 |
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| 摘 要： | 采用低温老化、高温晶化两步法在Na2O-Al2O3-SiO2-四丙基氢氧化铵(TPAOH)-H2O体系中水热合成了纳米ZSM-5分子筛。用BET、N2吸/脱附曲线和NH3-TPD等手段对负载Zn的纳米HZSM-5分子筛结构和酸性进行了表征。结果表明,与微米Zn/HZSM-5分子筛催化剂相比,所制备的纳米Zn/HZSM-5催化剂比表面积明显增大,总酸量和弱酸量增加;在丙烷芳构化反应中,纳米Zn/HZSM-5分子筛具有更佳的催化活性、稳定性和芳烃选择性。
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| 关 键 词： | 纳米分子筛 丙烷 芳构化 ZSM-5分子筛 |
| 文章编号： | 1001-7631(2006)04-0300-05 |
| 收稿时间： | 2006-03-06 |
| 修稿时间： | 2006-07-16 |
Aromatization of Propane over Nanosized Zn/HZSM-5 Zeolite |
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| Hou Huandi,Huang Chongpin,Chen Biaohua,Li Yingxia.Aromatization of Propane over Nanosized Zn/HZSM-5 Zeolite[J].Chemical Reaction Engineering and Technology,2006,22(4):300-304. |
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| Authors: | Hou Huandi Huang Chongpin Chen Biaohua Li Yingxia |
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| Affiliation: | State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029 , China |
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| Abstract: | Nanosized ZSM-5 zeolite was synthesized by low temperature aging and high temperature crystallization with Na_2O-Al_2O_3-SiO_2-TPAOH-H_2O.Textural properties and acidity of synthesized Zn/HZSM-5 catalysts were determined by Transmission Electron Microscope(TEM),N_2 adsorption and desorption at 77 K and temperature programmed desorption of ammonia(NH_3-TPD).It was found that the nanosized Zn/HZSM-5 catalyst possessed higher specific surface area,more total acid amount and more weak acid amount than micron Zn/HZSM-5 catalyst,which could afford nanosized Zn/HZSM-5 catalyst higher activity for propane aromatization,higher selectivity of aromatics and(better) stability than micron Zn/HZSM-5 catalyst. |
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| Keywords: | nanosized zeolite propane aromatization ZSM-5 zeolite |
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