凝胶注模方法合成含有微介大孔复合的MFI型多级孔材料及性质研究
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- 英文论文题名：The Synthesis and Properties of MFI Zeolites with Microporous,Mesoporous and Macroporous Hierarchical structures by a Gel-casting Technique
- 论文作者：王影 ; 王润伟 ; 许迪欧 ; 孙传胤 ; 张宗弢 ; 裘式纶
- 英文论文作者：Ying Wang ; Runwei Wang ; Diou Xu ; Chuanyin Sun ; Zongtao Zhang ; Shilun Qiu ; College of Chemistry and State Key Laboratory of Inorganic Synthesis and Preparative Chemistry ; University of Jilin
- 年：2016
- 作者机构：无机合成与制备化学国家重点实验室;
- 论文关键词：多级孔 ; 催化裂化 ; 正十六烷
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十二分会： 多孔功能材料
- 语种：中文
- 分类号：O643.36
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十二分会 ; 多孔功能材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：204k
- 原文格式：D
- 会议级别：全国
摘要
传统的ZSM-5只有相对较小的微孔尺寸的孔道,所以在对于大分子的吸附及催化裂化方面具有很大的限制作用。我们的实验是通过凝胶注模1的方法合成出一种ZSM-5分子筛,使其具有微孔,介孔2和大孔的多级孔结构,以此来客服微孔孔道的通过限制和利用微孔的强酸性位点的优势。我们所合成出的样品通过X射线衍射,扫描电镜,透射电镜,氮气吸附,氩气吸附,TPD-NH3,红外衍射等方法来进行表征。所合成出的多级孔材料用于1,3,5-三异丙苯和正十六烷的催化裂化实验研究,结果表明,无论是在提高转化率还是在产物选择性方面,我们所合成出的样品都要好于传统的ZSM-5,Beta和Al-MCM-41等催化剂。我们所合成的材料由于所选取的模具不同我们的产物的大小及形貌都是可控的,并且可以通过改变反应条件来调节所获得的最终催化剂内部的孔道分布,因此此材料可以广泛的应用于石油以及加氢裂化等领域。
The comparatively small microporous dimensions of bulk ZSM-5 zeolites often limit both the adsorption and the catalytic conversion of large organic molecules.Here,we report a method to prepare the ZSM-5 zeolites with a gel-casting~1 technique uisng microporous,mesoporous~2 and macroporous hierarchical structure.The as-prepared samples were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),Transmission electron microscopy(TEM),nitrogen adsorption,Temperature-programmed-desorption of ammonia(TPD-NH3)and Fourier Transform Infrared Spectroscopy(FTIR) measurements.The hierarchical structured ZSM-5 zeolites were used to carry out catalytic cracking reaction of 1,3,5-isopropyl benzene and n-hexadecane.The results show that modified ZSM-5 works better on improving the activity and selectivity of catalyst than traditional ZSM-5,Beta,Al-MCM-41,etc.Additionally,the macroscopic feature and the level of pores can be controlled,so the materials would widely used in residue fcc and hydrocracking macromolecules reactions.
The comparatively small microporous dimensions of bulk ZSM-5 zeolites often limit both the adsorption and the catalytic conversion of large organic molecules.Here,we report a method to prepare the ZSM-5 zeolites with a gel-casting~1 technique uisng microporous,mesoporous~2 and macroporous hierarchical structure.The as-prepared samples were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),Transmission electron microscopy(TEM),nitrogen adsorption,Temperature-programmed-desorption of ammonia(TPD-NH3)and Fourier Transform Infrared Spectroscopy(FTIR) measurements.The hierarchical structured ZSM-5 zeolites were used to carry out catalytic cracking reaction of 1,3,5-isopropyl benzene and n-hexadecane.The results show that modified ZSM-5 works better on improving the activity and selectivity of catalyst than traditional ZSM-5,Beta,Al-MCM-41,etc.Additionally,the macroscopic feature and the level of pores can be controlled,so the materials would widely used in residue fcc and hydrocracking macromolecules reactions.
引文
[1]Tan Q.F.,Bao X.J.,Song T.C.,Fan Y.,Shi G.,Shen B.J.,Liu C.H.and Gao X.H.,J.Catal.,2007,251,69.
[2]Zhang Z.T.,Gao X.H.,Xu D.O.,Yan L.J.,Wang R.W.,Zhou Z.Y.,CN.Patent CN201110070493.2.2011
[2]Zhang Z.T.,Gao X.H.,Xu D.O.,Yan L.J.,Wang R.W.,Zhou Z.Y.,CN.Patent CN201110070493.2.2011