DICP OpenIR
Piperazine as a versatile organic structure-directing agent for zeolite synthesis: effect of SiO2/Al2O3 ratio on phase selectivity
Bai, Luyi1,2; Xiong, Zhiping2,3; Zhan, Ensheng2; Li, Shuang1; Shen, Wenjie2
Corresponding AuthorZhan, Ensheng(eszhan@dicp.ac.cn) ; Li, Shuang(shuangli722@126.com)
Source PublicationJOURNAL OF MATERIALS SCIENCE
2019-05-01
ISSN0022-2461
DOI10.1007/s10853-019-03433-8
Volume54Issue:10Pages:7589-7602
Funding ProjectNatural Science Foundation of China[21773229] ; Natural Science Foundation of China[21878244]
Funding OrganizationNatural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China
WOS SubjectMaterials Science, Multidisciplinary
WOS Research AreaMaterials Science
WOS KeywordMAGADIITE CONVERSION METHOD ; HIGH-SILICA MORDENITE ; HYDROTHERMAL SYNTHESIS ; DIMETHYL ETHER ; METHYL ACETATE ; SMALL AMINES ; CRYSTALLIZATION ; CRYSTALS ; TETRAMETHYLAMMONIUM ; ALUMINOPHOSPHATES
AbstractThe synthesis of aluminosilicate zeolites by using piperazine as the organic structure-directing agent was studied. Under optimized conditions, zeolites ZSM-4 (MAZ), mordenite (MOR), ZSM-35 (FER), ZSM-5 (MFI) and ZSM-12 (MTW) were obtained in pure phase. The effect of SiO2/Al2O3 ratio in the initial gel on zeolite phase selectivity was systematically investigated. The SiO2/Al2O3 ratio ranges for the formation of each zeolite had been established. At low SiO2/Al2O3 ratios, ZSM-4 (SiO2/Al2O3 = 9) and mordenite (SiO2/Al2O3 = 12.8) could be obtained, while ZSM-35 (14.3 <= SiO2/Al2O3 <= 29.3), ZSM-5 (SiO2/Al2O3 = 58.7) and ZSM-12 (SiO2/Al2O3 = 117.2) gradually evolved as the SiO2/Al2O3 ratio increased. Piperazine was considered to have a charge-compensatory role when the amine group was protonated; its overall effectiveness depended on the zeolite structure. Piperazine fitted best with the FER structure, and the obtained FER zeolite had a hierarchical house of card texture which was assembled by the primary plate-shaped crystals. The ZSM-4, mordenite and ZSM-35 zeolites (in acidic form) were tested for the dimethyl ether carbonylation reaction; the essential role of 12-member ring (12MR) pore in mordenite for molecule transportation to the 8MR pore was proved by comparing to ZSM-4 that lacks interconnectivity between 12MR and 8MR pores.
Language英语
Funding OrganizationNatural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China
WOS IDWOS:000460069500015
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/165809
Collection中国科学院大连化学物理研究所
Corresponding AuthorZhan, Ensheng; Li, Shuang
Affiliation1.Northwest Univ, Sch Chem Engn, Xian 710069, Shaanxi, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Bai, Luyi,Xiong, Zhiping,Zhan, Ensheng,et al. Piperazine as a versatile organic structure-directing agent for zeolite synthesis: effect of SiO2/Al2O3 ratio on phase selectivity[J]. JOURNAL OF MATERIALS SCIENCE,2019,54(10):7589-7602.
APA Bai, Luyi,Xiong, Zhiping,Zhan, Ensheng,Li, Shuang,&Shen, Wenjie.(2019).Piperazine as a versatile organic structure-directing agent for zeolite synthesis: effect of SiO2/Al2O3 ratio on phase selectivity.JOURNAL OF MATERIALS SCIENCE,54(10),7589-7602.
MLA Bai, Luyi,et al."Piperazine as a versatile organic structure-directing agent for zeolite synthesis: effect of SiO2/Al2O3 ratio on phase selectivity".JOURNAL OF MATERIALS SCIENCE 54.10(2019):7589-7602.
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