| Nb-SBA-15介孔分子筛催化剂的制备及其催化性能 |
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| 引用本文： | 李春晶,李剑,沈健,魏田升,陈南,段大少. Nb-SBA-15介孔分子筛催化剂的制备及其催化性能[J]. 石化技术与应用, 2010, 28(1): 9-11,20 |
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| 作者姓名： | 李春晶 李剑 沈健 魏田升 陈南 段大少 |
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| 作者单位： | 1. 辽宁石油化工大学,石油化工学院,辽宁,抚顺,113001;武汉炼化工程设计有限责任公司,湖北,武汉,430082
2. 辽宁石油化工大学,石油化工学院,辽宁,抚顺,113001 |
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| 摘 要： | 以介孔分子筛SBA-15为载体,采用浸渍法制备了Nb-SBA-15催化剂,通过X-射线衍射(XRD)、N2吸附-脱附、红外光谱分析(FTIR)等测试手段对催化剂进行了表征,并对其在合成乙基叔丁基醚(ETBE)的醚化反应中的活性及重复使用性进行了评价。结果表明,当负载Nb的质量分数小于30%时,Nb-SBA-15催化剂仍具有SBA-15晶体结构和介孔结构,Nb与SBA-15载体间存在较强的相互作用。Nb-SBA-15催化剂在合成ETBE的醚化反应中具有很高的催化活性,叔丁醇转化率达64.10%,ETBE选择性可达92.70%,重复使用4次后,仍保持良好的催化活性。
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| 关 键 词： | 介孔分子筛 催化剂 铌 醚化反应 乙基叔丁基醚 |
Prepararion of mesoporous molecular sieve catalyst Nb-SBA-15 and its catalytic performance |
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| Li Chunjing,Li Jian,Shen Jian,Wei Tiansheng,Chen Nan,Duan Dashao. Prepararion of mesoporous molecular sieve catalyst Nb-SBA-15 and its catalytic performance[J]. Petrochemical Technology & Application, 2010, 28(1): 9-11,20 |
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| Authors: | Li Chunjing Li Jian Shen Jian Wei Tiansheng Chen Nan Duan Dashao |
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| Affiliation: | 1. College of Petrochemical Technology;Liaoning University ofPetroleum & Chemical Technology;Fushun 113001;China;2. Wuhan Refining & Chemical Engineer Co Ltd;Wuhan 430082;China |
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| Abstract: | Nb-SBA-15 catalyst was prepared with mesoporous molecular sieve SBA-15 as carrier by dipping method. The samples were characterized by X-ray diffraction analysis,nitrogen adsorption-desorption,infrared spectroscopy .The activity and reusability of the catalyst in etherification reaction of ethyl tert-butyl ether synthesis were revaluated. The results showed that when the mass fraction of niobium was below 30%,Nb-SBA-15 maintained the crystal and mesoporous structures of SBA-15,and there was stronger interac... |
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| Keywords: | mesoporous molecular sieve catalyst niobium etherification reaction ethyl tert-butyl ether |
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