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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
Zhang, Yafei1,2; Liu, Yasheng1,2; Sun, Liyuan1,2; Zhang, Luoming1,2; Xu, Jun3; Deng, Feng3; Gong, Yanjun1,2
2018-05-02
Source PublicationCHEMISTRY-A EUROPEAN JOURNAL
Volume24Issue:25Pages:6595-6605
SubtypeArticle
AbstractA 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.
KeywordCatalytic Cracking Composite Zeolites Crystal Growth Synthetic Methods Zeolites
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationState 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)
DOI10.1002/chem.201705805
WOS KeywordHETEROEPITAXIAL GROWTH ; INTERGROWTH STRUCTURES ; CATALYTIC PERFORMANCE ; COMPOSITE ZEOLITES ; HEXAMETHONIUM IONS ; SHAPE SELECTIVITY ; CRACKING ; ZSM-5 ; BETA ; GEL
Indexed BySCI
Language英语
Funding OrganizationState 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)
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000431001000017
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.apm.ac.cn/handle/112942/12060
Collection磁共振应用研究部
Affiliation1.China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
2.China Univ Petr, Key Lab Catalysis CNPC, Beijing 102249, Peoples R China
3.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
Recommended Citation
GB/T 7714
Zhang, Yafei,Liu, Yasheng,Sun, Liyuan,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 Zhang, Yafei.,Liu, Yasheng.,Sun, Liyuan.,Zhang, Luoming.,Xu, Jun.,...&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 Zhang, Yafei,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.
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