Eksplorasi Peran Logam Transisi (Fe, Cu, Mn) dalam Sintesis In-situ dan Pertumbuhan Kristal Zeolit Aluminofosfat: Analisis Struktural dan Termal

Muhammad Fadil Athar; Siti Khumaira; Ahmad Fahrizal

doi:10.70716/purechem.v1i1.264

Authors

Muhammad Fadil Athar Departemen Kimia, Universitas Gadjah Mada
Siti Khumaira Program Studi Kimia, Universitas Indonesia
Ahmad Fahrizal Departemen Kimia, Institut Teknologi Bandung

DOI:

https://doi.org/10.70716/purechem.v1i1.264

Keywords:

aluminophosphate zeolite, transition metals, in-situ synthesis, crystallinity, structural analysis, thermal stability

Abstract

This study aims to explore the role of transition metals (Fe, Cu, Mn) in the in-situ synthesis and crystal growth of aluminophosphate zeolites through structural and thermal analysis approaches. Crystal structure modification was carried out by incorporating transition metal cations into the aluminophosphate framework to observe their effects on morphology, pore distribution, thermal stability, and potential catalytic properties. The synthesis process was conducted using the hydrothermal method with varying metal concentrations, followed by characterization through XRD, FTIR, SEM, EDX, and thermal analysis (TGA/DSC). The results show that the presence of Fe, Cu, and Mn plays a significant role in directing crystal growth with distinct patterns. Fe enhances framework ordering and improves thermal stability, Cu influences crystal size and surface properties, while Mn contributes to the formation of framework defects that increase the specific surface area. Overall, transition metal doping improves the structural properties and enhances the catalytic potential of aluminophosphate zeolites in oxidation reactions and biomass conversion. These findings contribute to the fundamental understanding of aluminophosphate-based porous material synthesis as well as opportunities for their development in environmentally friendly industrial applications.

References

Chen, Y., Wang, R., & Xu, S. (2018). Hydrothermal synthesis and catalytic behavior of FeAPO-5. Catalysis Communications, 109, 14–19.

He, Y., et al. (2019). Redox properties of Fe-modified aluminophosphates in catalytic oxidation. Applied Catalysis B: Environmental, 248, 459–468.

Jiang, J., Li, Z., & Yu, J. (2017). Structural diversity of aluminophosphates and their functional modifications. Dalton Transactions, 46(31), 10363–10378.

Kim, M., Kim, D.H., & Park, S.E. (2016). Mn-incorporated aluminophosphate molecular sieves for high-temperature catalytic reactions. Applied Catalysis A: General, 528, 123–131.

Li, Z., Yu, J., & Xu, R. (2019). Synthesis and applications of aluminophosphate molecular sieves. Chemical Society Reviews, 48(16), 3815–3846.

Liu, Y., Zhang, D., & Chen, L. (2019). Characterization and catalytic applications of transition metal aluminophosphates. Materials Chemistry and Physics, 234, 103–111.

Lok, B.M., Messina, C.A., Patton, R.L., Gajek, R.T., Cannan, T.R., & Flanigen, E.M. (1984). Aluminophosphate molecular sieves: A new class of microporous crystalline inorganic solids. Journal of the American Chemical Society, 106(20), 6092–6093.

Luo, P., et al. (2019). Doping strategies for enhanced performance of aluminophosphate zeolites. Materials Today Chemistry, 13, 34–42.

Park, J., et al. (2017). Cu-based aluminophosphate catalysts for methanol-to-olefins reaction. Catalysis Today, 298, 234–242.

Pérez-Ramírez, J., Kapteijn, F., Schoonheydt, R.A., Moulijn, J.A. (2008). Cu-based zeolites as catalysts for the selective catalytic reduction of NOx with hydrocarbons. Catalysis Today, 107–108, 218–224.

Tan, X., et al. (2020). High-temperature catalytic performance of MnAPO materials. Journal of Catalysis, 389, 157–168.

Wang, H., Xu, W., & Zhao, T. (2020). In-situ synthesis of transition-metal modified aluminophosphate zeolites. Journal of Solid State Chemistry, 284, 121198.

Wu, H., et al. (2022). Transition-metal substituted aluminophosphate zeolites: Structure, stability, and catalytic insights. Journal of Materials Chemistry A, 10(14), 7536–7550.

Xu, Y., et al. (2018). In-situ observation of aluminophosphate crystal growth. Chemistry of Materials, 30(15), 5009–5017.

Xue, T., et al. (2019). Thermal stability of Mn-modified aluminophosphate materials. Journal of Thermal Analysis and Calorimetry, 136, 1129–1136.

Yu, C., et al. (2016). Structural evolution of aluminophosphates under thermal stress. Microporous and Mesoporous Materials, 220, 135–143.

Zhang, Q., Zhang, H., & Li, C. (2017). Iron-modified aluminophosphates: Structural features and catalytic properties. Microporous and Mesoporous Materials, 249, 158–165.

Zhang, R., & Wang, C. (2018). Morphological control of aluminophosphate crystals in hydrothermal synthesis. Crystal Growth & Design, 18(5), 2787–2794.

Zhang, T., et al. (2021). Role of transition metals in zeolite aluminophosphate catalysis. ACS Applied Materials & Interfaces, 13(12), 14167–14177.

Zhou, Y., & Yan, Y. (2016). Tailoring the framework of aluminophosphate zeolites with transition metals. Inorganic Chemistry Frontiers, 3(12), 1563–1574.