Synthesis of 13X molecular sieve employing Kaolin residues from Amazon Region

Reference Presenter Authors
(Institution)
Abstract
13-020 Thayná Ferreira de Azevedo Silva, E.B.(Universidade Federal do Oeste do Pará); Figueira, B.A.(Universidade Federal do Oeste do Pará); Vasconcelos, A.A.(Universidade Federal do Oeste do Pará); Silva, G.C.(Universidade Federal do Pará); Azevedo, T.F.(Universidade Federal do Oeste do Pará); The aim of this research was to develop a simple process to synthesis 13X zeolite molecular sieve employing Kaolin residues from Amazon Region, which actually has no commercial importance. A route synthetic was achieved by alkali fusion and low hydrothermal treatment in the starting material and it was not required heat procedure to metakaolinization technique. Materials characterization was performed using X-ray diffraction, infrared spectroscopy and thermogravimetry. According the X-ray diffraction measurement, a crystalline 13X zeolite phase was synthesized with Fd-3m cubic system and cell unit parameters a = 25,074 Å and V = 15.701 Å3, average crystallite size around 40 nm (Scherrer equation) and lattice strain (4 e) of 0.0178. The FTIR spectra displayed major bands at ~ 1660, 980, 670, 560 and 460 cm-1, attributed to the zeolitic water, Si-O-H, Si-O-Si and TO4 (T=Al or Si) vibration modes, respectively. The 13X zeolite was stable until 550 ºC.
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