This work describes the preparation of SAPO-34 from a aluminophosphate lamelar analogue of kanemite structure, herein named ALPO-kan. The transformation occurs through a novel zeolitic silicoaluminophosphato named CAL-1 and was promoted by the addition of silica and hexamethyleneimine (HMI) as structure directing agent into a Suspension of ALPO-kan. Calcination of CAL-1 affords H-SAPO-34-kan. The material was characterized by X-rays diffraction, scanning electronic microscopy, thermogravimetry, infrared spectroscopy in the hydroxyls region and Raman spectroscopy. The particles morphology is rather different from that of SAPO-34 prepared from a conventional gel synthesis and is composed of thin plates and pseudo-rombohedral particles that show remainings of a lamelar structure. This indicates that the transformation has occurred through a solid state reaction.

Synthesis of SAPO-34 from the lamellar ALPO-kanemite

COLUCCIA, Salvatore;
2004-01-01

Abstract

This work describes the preparation of SAPO-34 from a aluminophosphate lamelar analogue of kanemite structure, herein named ALPO-kan. The transformation occurs through a novel zeolitic silicoaluminophosphato named CAL-1 and was promoted by the addition of silica and hexamethyleneimine (HMI) as structure directing agent into a Suspension of ALPO-kan. Calcination of CAL-1 affords H-SAPO-34-kan. The material was characterized by X-rays diffraction, scanning electronic microscopy, thermogravimetry, infrared spectroscopy in the hydroxyls region and Raman spectroscopy. The particles morphology is rather different from that of SAPO-34 prepared from a conventional gel synthesis and is composed of thin plates and pseudo-rombohedral particles that show remainings of a lamelar structure. This indicates that the transformation has occurred through a solid state reaction.
2004
154
966
970
CRYSTALLINE INORGANIC SOLIDS; MOLECULAR-SIEVES; ZEOLITIC FRAMEWORK; ALUMINOPHOSPHATE; TEMPLATE; MORPHOLINE; CATALYSIS; PRECURSOR; SI
Albuquerque A; Coluccia S; Marchese L; Pastore HO
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/60014
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