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Synthesis of EU-1/ZSM-48 Co-Crystalline Zeolites from High-Silica EU-1 Seeds: Tailoring Phase Proportions and Promoting Long Crystalline-Phase Stability

文献类型：期刊论文

作者Deng, Feng1; Zhang, Yafei2,3; Liu, Yasheng2,3; Sun, Liyuan2,3; Zhang, Luoming2,3; Xu, Jun1; Gong, Yanjun2,3
刊名CHEMISTRY-A EUROPEAN JOURNAL
出版日期2018-05-02
卷号24期号:25页码:6595-6605
关键词Catalytic Cracking Composite Zeolites Crystal Growth Synthetic Methods Zeolites
DOI10.1002/chem.201705805
文献子类Article
英文摘要A facile, specific, seed-assisted strategy for the synthesis of EU-1/ZSM-48 co-crystalline zeolites in the presence of hexamethonium ions (HM2+) has been developed. EU-1/ZSM-48 co-crystalline zeolites with various phase proportions, with EU-1 in the range of 25 wt%-86 wt%, were obtained by adding high-silica EU-1 seeds (SiO2/Al2O3 ratio of 300) and adjusting the synthesis parameters. Not only can the phase proportions of EU-1/ZSM-48 co-crystalline zeolites be controlled, but also the stability period for co-crystallization of the two phases can be extended through varying the amount of EU-1 seeds and the HM2+ template. Moreover, with the increase of the EU-1 proportion in the EU-1/ZSM-48 co-crystalline, the framework SiO2/Al2O3 ratios of EU-1 phase promotes steadily. Major differences in acidity and textural properties of the EU-1/ZSM-48 co-crystalline zeolites (Coz) were found with varying phase proportions, due to their distinct topological structures, crystal morphology and asymmetry between the EU-1 and ZSM-48 phases. For instance, the EU-1/ZSM-48 zeolite containing 75 wt% of EU-1 (Coz-75) possesses specific acidity and mesoporous characteristics, showing an excellent catalytic activity and stability in n-hexane cracking reaction. Compared to EU-1, ZSM-48, and a mechanical mix of the two zeolites (Mix-75), Coz-75 resulted in the highest hexane conversion and yields of light olefins, with a propylene yield, in particular, up to 38.3 wt%, which is 6.3% more than that of the Mix-75 sample.
WOS关键词HETEROEPITAXIAL GROWTH ; INTERGROWTH STRUCTURES ; CATALYTIC PERFORMANCE ; COMPOSITE ZEOLITES ; HEXAMETHONIUM IONS ; SHAPE SELECTIVITY ; CRACKING ; ZSM-5 ; BETA ; GEL
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000431001000017
资助机构State Key Development Program for Basic Research of China(2012CB215002) ; State Key Development Program for Basic Research of China(2012CB215002) ; National Natural Science Foundation of China(21276278 ; National Natural Science Foundation of China(21276278 ; CNPC Key Research Projuct(2014A-2111) ; CNPC Key Research Projuct(2014A-2111) ; U1662116) ; U1662116) ; State Key Development Program for Basic Research of China(2012CB215002) ; State Key Development Program for Basic Research of China(2012CB215002) ; National Natural Science Foundation of China(21276278 ; National Natural Science Foundation of China(21276278 ; CNPC Key Research Projuct(2014A-2111) ; CNPC Key Research Projuct(2014A-2111) ; U1662116) ; U1662116)
源URL[http://ir.wipm.ac.cn/handle/112942/12060]  
专题武汉物理与数学研究所_磁共振应用研究部
作者单位1.Chinese Acad Sci, Wuhan Ctr Magnet Resonance, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Hubei, Peoples R China
2.China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
3.China Univ Petr, Key Lab Catalysis CNPC, Beijing 102249, Peoples R China
推荐引用方式
GB/T 7714		 Deng, Feng,Zhang, Yafei,Liu, Yasheng,et al. Synthesis of EU-1/ZSM-48 Co-Crystalline Zeolites from High-Silica EU-1 Seeds: Tailoring Phase Proportions and Promoting Long Crystalline-Phase Stability[J]. CHEMISTRY-A EUROPEAN JOURNAL,2018,24(25):6595-6605.
APA Deng, Feng.,Zhang, Yafei.,Liu, Yasheng.,Sun, Liyuan.,Zhang, Luoming.,...&Gong, Yanjun.(2018).Synthesis of EU-1/ZSM-48 Co-Crystalline Zeolites from High-Silica EU-1 Seeds: Tailoring Phase Proportions and Promoting Long Crystalline-Phase Stability.CHEMISTRY-A EUROPEAN JOURNAL,24(25),6595-6605.
MLA Deng, Feng,et al."Synthesis of EU-1/ZSM-48 Co-Crystalline Zeolites from High-Silica EU-1 Seeds: Tailoring Phase Proportions and Promoting Long Crystalline-Phase Stability".CHEMISTRY-A EUROPEAN JOURNAL 24.25(2018):6595-6605.

入库方式： OAI收割

来源：武汉物理与数学研究所

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