| 합성조건의 변화에 따른 FAU(Faujasite)형 제올라이트의 합성 |
| 임형미, 김봉영, 남중희, 안병길, 오성근1, 정상진2 |
요업기술원 신기능재료연구부
1한양대학교 화학공학과
2요업기술원 세라믹ㆍ건재부 |
| Synthesis of FAU(Faujasite)-type Zeolite with Variation of Synthesis Condition |
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| ABSTRACT |
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The effect of synthesis condition, type of starting materials, mole ratio, mixing. aging, and crystallization temperature and time, on the size of FAU-type zeolite has been studied. Different mixing route may lead to the different phase of zeolite even with the same starting materials. In general, the size of particles is smaller after aging, especially at lower aging temperature. Two step mixture gel preparation method resulted to not only the reduction of crystallization time but also that of particle size, but without the aging of two mixture gels before the preparation of the overall gel in the second step, only the crystallization time was reduced, not the particle size. The FAU-type zeolite with average particle size 0.4$mu$m and BET surface area 838 $m^2$/g was obtained from starting materials of liquid sodium silicate, sodium aluminate, and sodium hydroxide with two step preparation of mixture gel, aging of the mixture gels in two steps, which effectively reduced the crystallization time and particle size. |
| Key words:
FAU, Zeolite, Particle sire, Hydrothermal synthesis, Synthesis condition |
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