갈리실리케이트(Ga-MFI)의 합성 및 ZSM-5와의 비교

• 영문명: Synthesis of Gallosilicate(Ga-MFI} and Its Comparison with ZSM-5
• 발행기관: 한국응용과학기술학회 (구.한국유화학회)
• 저자명: 김영국(Kim YoungKook) 황재영(Hwang JaeYoung) 김명수(Kim MyungSoo) 박홍수(Park HongSoo) 함현식(Hahm HyunSik)
• 간행물 정보: 『한국응용과학기술학회지』한국유화학회지 제21권 제3호, 231~237쪽, 전체 7쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2004.09.30

영문 초록

Ga-MFI was synthesized by a hydrothermal process at atmospheric pressure. The effect of mole ratios of reactants on crystallization was also investigated thoroughly. The characteristics of synthesized Ga-MFI was compared with ZSM-5. The synthesis of Ga-MFI was carried out with five different mole-compositions of underline{a}SiO_2-underline{b}Ga_2O_3-underline{c}Na_2O-underline{d}TPA_2o-underline{e}H_2O . The synthesized Ga-MFI and ZSM-5 were characterized by XRD and FT-IR. The inorganic cation (Na^+ ) and water played an important role in crystallinity and the organic cation (TPA^+ ) as a template played a great influence on yields. With the increase in the amount of Ga^{3+} , crystallization time was increased. With a fixed SiO_2/Ga_2O_3 ratio of 400, the optimum reaction condition was obtained at H_2O/SiO_2 =30{sim} 35, Na_2O/SiO_2 =0.5{sim} 0.6, and TPA_2O/Na_2O =1{sim} 1.25. In these cases, the crystallinity and yield were more than 95% and 90%, respectively. By comparing IR spectrum of Ga-MFI with those of ZSM-5 and silicalite, it was found that Ga-MFI showed a unique peak at 970 cm^{-1} , which may be used to identify Ga-MFI from ZSM-5 and silicalite.

키워드

Ga-MFI ZSM-5 silicalite Ga-MFI crystallinity Ga-MFI unique spectrum