Microwave-Assisted Synthesis of Layered Double Hydroxides and Their Nanocomposites

A senes of hydrotalcite (HT) compounds of the type {Mg1_.rAl,(OH)2}[CO3]1.x12 mH2O had been synthesised using conventional co-precipitation method with Rd15 = Mg/ Al=1 to 10 m order to establish the relationship between composition and the basic properties it was found that pure HT compounds were...

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Main Author: Ow Wee, Shing Tat
Format: Thesis
Language:English
English
Published: 1999
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Online Access:http://psasir.upm.edu.my/id/eprint/9472/1/FSAS_1999_19_A.pdf
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spelling my-upm-ir.94722013-09-25T07:50:44Z Microwave-Assisted Synthesis of Layered Double Hydroxides and Their Nanocomposites 1999-08 Ow Wee, Shing Tat A senes of hydrotalcite (HT) compounds of the type {Mg1_.rAl,(OH)2}[CO3]1.x12 mH2O had been synthesised using conventional co-precipitation method with Rd15 = Mg/ Al=1 to 10 m order to establish the relationship between composition and the basic properties it was found that pure HT compounds were obtained in the range of Rd15 =2 to 4. The materials were also synthesised by microwave-assisted method using a home cooking microwave oven at various ageing tunes, from 0 5 to 10.0 minutes.The discharged ratio of Rd15 = 3, 4, and 6 were chosen in this study. The resulting synthetic materials afford well-crystallised hydrotalcite even at a very short microwave exposure tune of about 60 minutes as compared With the conventional method that took about 18hrs. However, the conventional method gave good crystallimty. On the other hand, the microwave-assisted method gave better pore size distribution as compared to the conventional method. Better crystallImty was observed as the exposure time mcreased for all Rd15 Structural charactensations were done by powder X-ray diffraction (PXRD). The gram sizes and crystal stram of the materials using PXRD were calculated. Modification of hydrotalcite had also been done by replacing its among With anthraqumone-2,6-disulfanate ions (AQ26), which were present in the mterlayer of brucitelike ([Mg1-,AI.,(OH)2]") and [Zn1-.,Alx(OH)2]")... Layered double hydroxides - Synthesis Microwaves - Case studies 1999-08 Thesis http://psasir.upm.edu.my/id/eprint/9472/ http://psasir.upm.edu.my/id/eprint/9472/1/FSAS_1999_19_A.pdf application/pdf en public masters Universiti Putra Malaysia Layered double hydroxides - Synthesis Microwaves - Case studies Faculty of Science and Environmental Studies English
institution Universiti Putra Malaysia
collection PSAS Institutional Repository
language English
English
topic Layered double hydroxides - Synthesis
Microwaves - Case studies

spellingShingle Layered double hydroxides - Synthesis
Microwaves - Case studies

Ow Wee, Shing Tat
Microwave-Assisted Synthesis of Layered Double Hydroxides and Their Nanocomposites
description A senes of hydrotalcite (HT) compounds of the type {Mg1_.rAl,(OH)2}[CO3]1.x12 mH2O had been synthesised using conventional co-precipitation method with Rd15 = Mg/ Al=1 to 10 m order to establish the relationship between composition and the basic properties it was found that pure HT compounds were obtained in the range of Rd15 =2 to 4. The materials were also synthesised by microwave-assisted method using a home cooking microwave oven at various ageing tunes, from 0 5 to 10.0 minutes.The discharged ratio of Rd15 = 3, 4, and 6 were chosen in this study. The resulting synthetic materials afford well-crystallised hydrotalcite even at a very short microwave exposure tune of about 60 minutes as compared With the conventional method that took about 18hrs. However, the conventional method gave good crystallimty. On the other hand, the microwave-assisted method gave better pore size distribution as compared to the conventional method. Better crystallImty was observed as the exposure time mcreased for all Rd15 Structural charactensations were done by powder X-ray diffraction (PXRD). The gram sizes and crystal stram of the materials using PXRD were calculated. Modification of hydrotalcite had also been done by replacing its among With anthraqumone-2,6-disulfanate ions (AQ26), which were present in the mterlayer of brucitelike ([Mg1-,AI.,(OH)2]") and [Zn1-.,Alx(OH)2]")...
format Thesis
qualification_level Master's degree
author Ow Wee, Shing Tat
author_facet Ow Wee, Shing Tat
author_sort Ow Wee, Shing Tat
title Microwave-Assisted Synthesis of Layered Double Hydroxides and Their Nanocomposites
title_short Microwave-Assisted Synthesis of Layered Double Hydroxides and Their Nanocomposites
title_full Microwave-Assisted Synthesis of Layered Double Hydroxides and Their Nanocomposites
title_fullStr Microwave-Assisted Synthesis of Layered Double Hydroxides and Their Nanocomposites
title_full_unstemmed Microwave-Assisted Synthesis of Layered Double Hydroxides and Their Nanocomposites
title_sort microwave-assisted synthesis of layered double hydroxides and their nanocomposites
granting_institution Universiti Putra Malaysia
granting_department Faculty of Science and Environmental Studies
publishDate 1999
url http://psasir.upm.edu.my/id/eprint/9472/1/FSAS_1999_19_A.pdf
_version_ 1747810962225758208