Journal
JOURNAL OF POROUS MATERIALS
Volume 26, Issue 5, Pages 1345-1352Publisher
SPRINGER
DOI: 10.1007/s10934-019-00725-x
Keywords
Hydrothermal conversion; FAU zeolite; GME zeolite; Dual-template method; High porosity
Funding
- Ministry of Education, Culture, Sports, Science, and Technology of Japan (MEXT) [16H04218]
- Grants-in-Aid for Scientific Research [16H04218] Funding Source: KAKEN
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Highly crystalline gmelinite (GME) zeolites with Si/Al ratio of 3 were successfully synthesized from FAU zeolites as the starting silica/alumina source using the dual-template method with a mixture of tetraethylphosphonium and N,N-dimethyl-3,5-dimethylpiepridinium cations as an organic structure-directing agent (OSDA). It was also found that the prepared GME zeolite exhibited high porosity when the as-made GME zeolite was K+ ion-exchanged and then calcined at 580 degrees C at 6 h to remove OSDAs in the zeolitic pores.
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