Use of surface modified natural zeolite (SMNZ) in pharmaceutical preparations Part 1. Mineralogical and technological characterization of some industrial zeolite-rich rocks

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Use of surface modified natural zeolite (SMNZ) in pharmaceutical preparations Part 1. Mineralogical and technological characterization of some industrial zeolite-rich rocks

 (  Article in press  )

Cappelletti, P.aColella, A.aLangella, A.bMercurio, M.bCatalanotti, L.cMonetti, V.ade Gennaro, B.c

a  DiSTAR, University of Naples Federico II, Via Mezzocannone 8, 80134 Naples, Italy


b  Department of Science and Technologies, University of Sannio, Via dei Mulini 59/A, 82100 Benevento, Italy 


Department of Chemical and Materials Engineering and Industrial Production, University of Naples, Federico II, Pl.e V. Tecchio 80, 80125 Naples, Italy

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Microporous and Mesoporous Materials

March 24, 2014

 

Abstract

The present research accounted for an accurate selection of representative samples from zeolitized deposits of different world geographical areas commonly mined and marketed by American and European mining companies. These geomaterials displayed high contents of clinoptilolite, phillipsite, and chabazite and were deeply characterized from mineralogical, chemical, and technological points of view. A preliminary quality control of the selected materials allowed us to determine the presence of undesired minerals and/or elements. A thermodynamic investigation of the surface exchange reactions between the selected zeolite-rich rocks and the surfactant agents (HDTMA-Br/Cl, hexadecyltrimethylammonium bromide/chloride, BC-Cl, benzalkonium-chloride, CP-Cl, cetylpiridinum-chloride) enabled us to verify the extent and the compactness of the formed micelle and to foresee their future behavior through interaction with molecules of anti-inflammatory drugs (drug delivery). The encouraging results pave the way towards good perspectives on the possible use of zeolite-rich rocks in the pharmaceutical sector through a preliminary basic protocol for the characterization and monitoring of the batches to be employed. © 2015 Elsevier Inc.

Author keywords

Cationic surfactant; Chabazite-rich rocks; Clinoptilolite-rich rocks; Phillipsite-rich rocks; Surface modified natural zeolite (SMNZ)

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