| 晶种导向合成不同厚度Zn-ZSM-5用于甲醇制芳烃反应 |
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| 引用本文： | 赵英龙,刘民,李俊杰,张甜甜,郭新闻. 晶种导向合成不同厚度Zn-ZSM-5用于甲醇制芳烃反应[J]. 石油学报(石油加工), 2021, 37(2): 269-280. DOI: 10.3969/j.issn.1001-8719.2021.02.004 |
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| 作者姓名： | 赵英龙 刘民 李俊杰 张甜甜 郭新闻 |
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| 作者单位： | 大连理工大学 化工与环境生命学部 化工学院 催化化学与工程系精细化工国家重点实验室， 辽宁 大连 116024 |
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| 基金项目： | 国家重点研发计划项目（2018YFB0604801）, 国家自然科学基金项目（21972013）资助 |
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| 摘 要： | 采用乙二胺与硝酸锌络合物作为Zn物种前驱体,通过加入不同b轴厚度的晶种及尿素水热合成了一系列具有不同b轴厚度的Zn-ZSM-5沸石分子筛.X射线衍射(XRD)、Ar物理吸附和扫描电镜(SEM)的结果显示,Zn物种均匀分布在ZSM-5沸石分子筛中;N H3-T PD和红外光谱结果显示Zn的引入对沸石分子筛的酸性有显著影响...
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| 关 键 词： | Zn-ZSM-5 甲醇制芳烃 晶种导向 稳定性 |
| 收稿时间： | 2020-03-17 |
Synthesis of Zn-ZSM-5 Zeolites of Different Thicknesses by Seed-Oriented Strategy for Methanol to Aromatics |
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| ZHAO Yinglong,LIU Min,LI Junjie,ZHANG Tiantian,GUO Xinwen. Synthesis of Zn-ZSM-5 Zeolites of Different Thicknesses by Seed-Oriented Strategy for Methanol to Aromatics[J]. Acta Petrolei Sinica (Petroleum Processing Section), 2021, 37(2): 269-280. DOI: 10.3969/j.issn.1001-8719.2021.02.004 |
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| Authors: | ZHAO Yinglong LIU Min LI Junjie ZHANG Tiantian GUO Xinwen |
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| Affiliation: | State Key Laboratory of Fine Chemicals, Department of Catalysis Chemistry and Engineering,School of Chemical Engineering, Faculty of Chemical, Environmental and biological Science and Technology, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | Zn-ZSM-5 zeolites with different b-axis thicknesseswere synthesized by using a complex of ethylenediamine and zinc nitrate as Znprecursor,in the presence of seed crystals of different b-axis thicknesses andurea. X-ray diffraction (XRD), Ar physical adsorption and scanning electronmicroscopy (SEM) show that Zn species are highly distributed in the matrix ofzeolite. NH3-TPD and infrared spectra proved that the introduction of Zn has asignificant effect on the acidity of zeolites. We also explored thedistribution status of Zn species by using X-ray diffraction spectroscopy(XPS). Compared with traditional H-ZSM-5, the selectivity and stability ofZn-ZSM-5 in methanol to aromatics reaction are both significantly improved. TheZn-ZSM-5-100 with b-axis thickness of 100 nm exhibits the highest catalyticperformance. Under the conditions of reaction temperature of 430 ℃, atmospheric pressure andmass space velocity of 3 h-1, the selectivity of aromatics is 54.4% and thestability of the catalyst reaches 156 h. |
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| Keywords: | Zn-ZSM-5 methanol to aromatics seed-oriented stability |
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