Preparation of MAZ-Type Zeolite with High Silica
Songcheng Bo, Kaixuan Yang, Hongying Lü, Zhiguo Zhu
TL;DR
Researchers developed a high-silica MAZ zeolite using steaming treatment and interzeolite transformation, improving its thermal stability.
Contribution
A novel method to increase the Si/Al ratio in MAZ zeolite using steaming and FAU transformation is introduced.
Findings
Steaming treatment increased the Si/Al molar ratio to 16.9 with 75% preserved crystallinity.
Interzeolite transformation from FAU zeolite produced high-silica MAZ with a Si/Al ratio of 7.3.
Acetic acid treatment was less effective than steaming for increasing the Si/Al ratio.
Abstract
The Si/Al molar ratio of MAZ aluminosilicate zeolite prepared by the direct hydrothermal method is generally less than five, thus giving rise to poor thermal and hydrothermal stability for this low-silica zeolite. With the purpose of enhancing the Si/Al molar ratio of MAZ zeolite, post-synthesized methods including acetic acid treatment and steaming treatment, as well as interzeolite transformation from FAU zeolite, were employed to prepare MAZ zeolite with high silica. It was found that steaming treatment was more effective in increasing the Si/Al molar ratio in comparison with acetic acid treatment, affording a maximum Si/Al molar ratio of 16.9 along with a preserved crystallinity of approximately 75%. Additionally, high-silica MAZ zeolite with a Si/Al molar ratio of up to 7.3 was also capable of being directly hydrothermally synthesized using interzeolite transformation from FAU…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsZeolite Catalysis and Synthesis · Mesoporous Materials and Catalysis · Catalytic Processes in Materials Science