Breadcrumb

 
 

Preparation and characterization of mesoporous aluminosilicates from Ca-A zeolite

Title:

Preparation and characterization of mesoporous aluminosilicates from Ca-A zeolite

Vo, Ngoc Truc-Chi (1992) Preparation and characterization of mesoporous aluminosilicates from Ca-A zeolite. Masters thesis, Concordia University.

[img]
Preview
PDF
2782Kb

Abstract

Three methods have been developed in order to enlarge the pore size of the micropore-type zeolite into a mesopore type: (a) 0.2N HCl acid treatment at 80$\sp\circ$C from which the time of exposure to the acid medium has a great influence on the pore size distribution of the resulting materials. (b) A hydrothermal treatment followed by a mild acid treatment that can unblock the pore openings. (c) Finally, a treatment with 0.5M (NH$\sb4$)$\sb2$SiF$\sb6$. The two first methods provided mesopores of 3.5-4.5 nm while the last one produced larger mesopores of ca. 14 nm. Several physico-chemical techniques were used to characterize the reaction products: BET measurements, XRD, AA Spectrophotometry, hydrophobicity measurement, bulk density, $\sp{29}$Si- and $\sp{27}$Al-NMR.

Divisions:Concordia University > Faculty of Arts and Science > Chemistry and Biochemistry
Item Type:Thesis (Masters)
Authors:Vo, Ngoc Truc-Chi
Pagination:xiv, 142 leaves : ill. ; 29 cm.
Institution:Concordia University
Degree Name:Theses (M.Sc.)
Program:Dept. of Chemistry and Biochemistry
Date:1992
ID Code:34
Deposited By:Concordia University Libraries
Deposited On:27 Aug 2009 13:09
Last Modified:08 Dec 2010 10:12
Related URLs:
All items in Spectrum are protected by copyright, with all rights reserved. The use of items is governed by Spectrum's terms of access.

Repository Staff Only: item control page

Document Downloads

More statistics for this item...

Concordia University - Footer