Synthesis and Characterization of ZSM-5 Zeolite Using Kaolin as Si and Al Source

Valmir José da Silva; Meiry Glaúcia Freire Rodrigues

doi:10.4028/www.scientific.net/MSF.805.651

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HomeMaterials Science ForumMaterials Science Forum Vol. 805Synthesis and Characterization of ZSM-5 Zeolite...

Synthesis and Characterization of ZSM-5 Zeolite Using Kaolin as Si and Al Source

Abstract:

The objective of this work is to obtain synthesis of ZSM-5 zeolite using kaolin as Si and Al alternative source. Kaolin powder was dispersed under constant stirring into the sílica sol where the mass ratio of kaolin to silica was 1:2. After stirring for 2 hours, the dispersion was dried at 160 °C and calcined at 700 °C/2 hours. The synthesis of ZSM-5 zeolite was by hydrothermal treatment at 170 °C/48 hours under autogenous pressure. The materials were characterized by XRD, SEM, EDX, BET. According to the XRD, was possible to observe the formation of ZSM-5 zeolite with intense and well defined peaks set located between 2θ = 7-9° and 23-25°, typical of a crystalline material. The SEM showed the formation of particles clusters with orthorhombic shape characteristic of MFI structure. The results show that the hydrothermal treatment was efficient to produce ZSM-5 using calcined kaolin as alternative source.

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Periodical:

Materials Science Forum (Volume 805)

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651-656

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.805.651

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Online since:

September 2014

Authors:

Valmir José da Silva*, Meiry Glaúcia Freire Rodrigues

Keywords:

Calcined Kaolin, Hydrothermal Synthesis, ZSM-5

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