caa a22 4500 606194975 CHVBK 20210128100916.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s10934-015-0034-6 doi (NATIONALLICENCE)springer-10.1007/s10934-015-0034-6 One-step facile synthesis of bulk zeolite A through metakaolin-based geopolymer gels [Elektronische Daten] [Jianxia Duan, Jun Li, Zhongyuan Lu] A one-step facile method without any surfactants and autoclaves has been proposed to synthesis bulk zeolite A through metalkaolin-based geopolymer gels. The geopolymer gels could be in situ transformed to zeolite A during geopolymerization process when the samples were kept in the oven for a period of time. Influence of the synthesis temperature, curing time, Na/Al ratio and water-binder ratio on the structures, morphology and mechanical properties of the bulk zeolite A has also been studied. Results indicated that highly purified and crystallined zeolite A with Na/Al ratio of 1.0 and water-binder ratio of 0.7 could be obtained at 70°C for 16h. The non-crystallined geopolymer gels would bond the micro-particles of zeolite A with each other, which make the bulk samples have certain strength. The formation mechanism of the bulk zeolite A has also been discussed. Micropores and mesopores in the bulk zeolite A have been observed by nitrogen adsorption because of the coexistence of zeolite A phase and geopolymer phase. Meanwhile, the mercury intrusion porosimetry also confirmed the existence of macro-pores with 0.9μm of pore-size and 39.2% of porosity in the bulk body. Springer Science+Business Media New York, 2015 Bulk zeolite A nationallicence Geopolymer gels nationallicence In-situ transformation nationallicence Formation mechanism nationallicence Pore structure nationallicence Duan Jianxia State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, 621010, Mianyang, Sichuan, China aut Li Jun State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, 621010, Mianyang, Sichuan, China aut Lu Zhongyuan State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, 621010, Mianyang, Sichuan, China aut Journal of Porous Materials Springer US; http://www.springer-ny.com 22/6(2015-12-01), 1519-1526 1380-2224 22:6<1519 2015 22 10934 https://doi.org/10.1007/s10934-015-0034-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10934-015-0034-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Duan Jianxia State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, 621010, Mianyang, Sichuan, China aut NATIONALLICENCE 700 1- Li Jun State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, 621010, Mianyang, Sichuan, China aut NATIONALLICENCE 700 1- Lu Zhongyuan State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, 621010, Mianyang, Sichuan, China aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer US; http://www.springer-ny.com 22/6(2015-12-01), 1519-1526 1380-2224 22:6<1519 2015 22 10934