ID :
179353
Mon, 05/02/2011 - 13:59
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https://www.oananews.org//node/179353
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Scientists Optimize Parameters Effective in Synthesis of ZSM-5 Nanozeolite
TEHRAN, May 2 (FNA)- Researchers at Iran's University of Mazandaran optimized a number of parameters effective in the synthesis of ZSM-5 nanozeolite by using Taguchi's experimental design.
Dr. Maryam Abrishamkar, member of the Scientific Board of Khuzestan Science and Research Branch of the Islamic Azad University, in a research work related to her PhD thesis optimized the parameters effective in the synthesis of ZSM-5 nanozeolite in order to obtain the zeolite at the smallest possible size of crystal.
"Tetraethyl orthosilicate (as the source of silica) and tetrapropyl ammonium hydroxide and isopropoxide aluminum were dissolved in an appropriate amount of soda solution, then the obtained transparent solution was heated in an oil bath in order to carry out the crystallization process," she explained about the synthesis process of the nanozeolite.
"After the synthesis process, the obtained colloidal mixture was strained by centrifuge in order to separate the synthesized nanocrystals. Then, the produced nanozeolite was many times rinsed with distilled water, and it was finally dried in an oven."
According to Dr. Abrishamkar, achieving the optimum conditions for the preparation of the experimental mixture in order to synthesize ZSM-5 nanozeolite by carrying out the least experiments was the cause of using Taguchi's experimental design.
"Since Taguchi's experimental design has the capacity to be carried out in an industrial scale and it is cost-effective, the execution of this project by using the proposed method can be the key to the project's success," she underlined.
According to the researcher of the plan, ZSM-5 nanozeolite can be synthesized through other methods too, but it requires more time, experimental materials, and it also needs more difficult operational conditions in order to reach the best conditions to obtain the products with significant purity and smaller size of crystals. However, the proposed method is very simple and fast, and it can be easily industrialized.
Dr. Maryam Abrishamkar, member of the Scientific Board of Khuzestan Science and Research Branch of the Islamic Azad University, in a research work related to her PhD thesis optimized the parameters effective in the synthesis of ZSM-5 nanozeolite in order to obtain the zeolite at the smallest possible size of crystal.
"Tetraethyl orthosilicate (as the source of silica) and tetrapropyl ammonium hydroxide and isopropoxide aluminum were dissolved in an appropriate amount of soda solution, then the obtained transparent solution was heated in an oil bath in order to carry out the crystallization process," she explained about the synthesis process of the nanozeolite.
"After the synthesis process, the obtained colloidal mixture was strained by centrifuge in order to separate the synthesized nanocrystals. Then, the produced nanozeolite was many times rinsed with distilled water, and it was finally dried in an oven."
According to Dr. Abrishamkar, achieving the optimum conditions for the preparation of the experimental mixture in order to synthesize ZSM-5 nanozeolite by carrying out the least experiments was the cause of using Taguchi's experimental design.
"Since Taguchi's experimental design has the capacity to be carried out in an industrial scale and it is cost-effective, the execution of this project by using the proposed method can be the key to the project's success," she underlined.
According to the researcher of the plan, ZSM-5 nanozeolite can be synthesized through other methods too, but it requires more time, experimental materials, and it also needs more difficult operational conditions in order to reach the best conditions to obtain the products with significant purity and smaller size of crystals. However, the proposed method is very simple and fast, and it can be easily industrialized.
