Effects of Reduction of Percent of Template (HMI) and Time of Static Synthesis on the Structure of MCM-22 Zeolite

Everton R.F. dos Santos; Romulo C.N. Leite; Aécio B. Sousa; Herve M. Laborde; Meiry Glaucia F. Rodrigues

doi:10.4028/www.scientific.net/MSF.805.291

Paper Titles

Risk Management Incorporated to Life-of-Mine Planning at Sossego Copper Mine, Carajás, Brazil
p.263

Synthesis of MCM-22 Zeolite Membrane on a Porous Alumina Support
p.272

Evaluation of Chocolate Clay Removal of Lead in B (Pb²⁺) System in Finite Bath
p.279

Feasibility Study of the Properties of Clay Chocobofe Removal of Lead in Synthetic Wastewater
p.284

Effects of Reduction of Percent of Template (HMI) and Time of Static Synthesis on the Structure of MCM-22 Zeolite
p.291

Influence of Calcium Concentration on the Structural and Electrical Properties of PZT Ceramic
p.298

Effect of Solubilization Temperature on the Sigma Phase Precipitation of a Superduplex Stainless Steel
p.305

Experimental Methodology for Limit Strain Determination in a Carbon/Epoxy Composite under Tensile Fatigue Loading
p.311

Thermal Properties of a Barium Boron Silicate Glass as a Sealant for Use in Anode-Supported Solid Oxide Fuel Cells
p.319

HomeMaterials Science ForumMaterials Science Forum Vol. 805Effects of Reduction of Percent of Template (HMI)...

Effects of Reduction of Percent of Template (HMI) and Time of Static Synthesis on the Structure of MCM-22 Zeolite

Abstract:

This work aims to study the effects of reducing the level of template HMI (100, 75, 50, 25 and 0% HMI) and time (10, 9 and 8 days) of static synthesis in the structure of MCM-22 zeolite. The synthesis of the MCM-22 (P) precursors was carried out by using hexamethyleneimine (HMI) as organic template under static conditions. The MCM-22 zeolites (100, 75 e 50% HMI) was obtained by the calcination of precursors MCM-22 (P) in a muffle to remove the occluded organic of precursors. These materials were characterized by X-ray diffraction (XRD), spectroscopy of X-ray for energy dispersive (EDX), adsorption isotherms of N₂ (BET method), Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The XRD's and EDX's of all samples have confirmed the static synthesis of MCM-22, whose precursor and zeolite materials showed all the characteristic peaks of the topology MWW. The Adsorption isotherms of N₂ are of type I, represented by microporous materials, whose hysteresis (type H3) are representative of solids with pores of different geometries. The FTIR's shown that the precursors showed the characteristic bands of a laminated material. From the SEM's, it was found the samples calcined MCM-22 are constituted by strip-shaped crystals agglomerated with a depression in the central region. In the sample MCM-22 (P) 75% HMI (8 days), showed no crystals uniform due to the presence of unreacted material in relation to crystalline phases.

You might also be interested in these eBooks

A Special Issue in Memory of Dr. Lucio Salgado

View Preview

Info:

Periodical:

Materials Science Forum (Volume 805)

Pages:

291-297

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.805.291

Citation:

Cite this paper

Online since:

September 2014

Authors:

Everton R.F. dos Santos*, Romulo C.N. Leite, Aécio B. Sousa, Herve M. Laborde, Meiry Glaucia F. Rodrigues

Keywords:

HMI, MCM-22, Reduction, Time

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] C. Delitala, E. Cadoni, D. Delpiano, D. Meloni, S. Melis and I. Ferino: Microporous Mesoporous Mater. Vol. 110 (2008), p.197.

DOI: 10.1016/j.micromeso.2007.06.018

Google Scholar

[2] U. Díaz, V. Fornés and A. Corma: Microporous Mesoporous Mater. Vol. 90 (2006), p.73.

Google Scholar

[3] J. Aguilar, S.B.C. Pergher, C. Detoni, A. Corma, F.V. Melo and E. Sastre: Catal. Today Vol. 133–135 (2008), p.667.

DOI: 10.1016/j.cattod.2007.11.057

Google Scholar

[4] S. Choi, J. Coronas, Z. Lai, D. Yust, F. Onorato and M. Tsapatsis: J. Membr. Sci. Vol. 316 (2008), p.145.

Google Scholar

[5] A.L.S. Marques, J.L.F. Monteiro, H.O. Pastore: Microporous Mesoporous Mater. Vol. 32 (1999), p.131.

Google Scholar

[6] Y.J. He, G.S. Nivarthy, F. Eder, K. Seshan and J.A. Lercher: Microporous Mesoporous Mater. Vol. 25 (1998), p.207.

DOI: 10.1016/s1387-1811(98)00210-8

Google Scholar

[7] I. Mochida, S. Eguchi, M. Hironaka, S. Nagao, K. Sakanishi and D.D. Whitehurst: Zeolites Vol. 18 (1997), p.142.

DOI: 10.1016/s0144-2449(96)00142-x

Google Scholar

[8] J. Xia, D. Mao, W. Tao, Q. Chen, Y. Zhang and Y. Tang: Microporous Mesoporous Mater. Vol. 91 (2006), p.33.

Google Scholar

[9] A. Corma, C. Corell,V. Fornés,W. Kolodziejski and J. Pérez-Pariente: Zeolites Vol . 15 (1995), p.576.

DOI: 10.1016/0144-2449(95)00015-x

Google Scholar