(A) study on the adsorption and catalytic oxidation of volatile organic compounds over zeolites and mesoporous molecular sieves = 제올라이트 및 메조포어 분자체의 휘발성 유기화합물 흡착과 촉매산화반응에 관한 연구

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Adsorption and catalytic oxidation have been recognized as the most economical and efficient technologies for the control of volatile organic compounds (VOCs). Especially when these two processes are combined together into an advanced adsorption-oxidation system, the energy efficiency of the system can be maximized with the reduced volume of VOC stream of low concentration. The hydrophobic zeolites has been considered as a key material in the adsorption-oxidation combined system, because they usually exhibit large adsorption capacity for VOCs even in highly humid atmosphere, and they can be utilized as good catalyst supports. In addition to hydrophobic zeolites, conventional mesoporous molecular sieves, M41S family, has been drawn much attention in adsorption and catalysis due to their large surface area and unique pore structures. However their low hydrothermal stability limits practical application to adsorption and catalysis. In this study, hydrophobic zeolites and mesoporous molecular sieves were proposed and investigated the applicability as potential adsorbents as well as catalyst supports to develop the adsorption-catalytic oxidation combined processes. The first research object was focused to synthesize hydrothermally stable mesoporous molecular sieves to be applied to practical adsorption and catalysis. By using nanoclustered zeolite seeds - zeolite seeds crystallization method - the steam stable mesoporous molecular sieves (SM-41) were successfully synthesized. The hydrothermal stability of synthesized SM-41 was dramatically increased, which was confirmed from the hydrothermal treatment test followed by structural analysis such as $N_2$ adsorption isotherm study, XRD and FTIR. The enhanced hydrothermal stability might result from the crystallization of amorphous walls of conventional MCM-41 by using zeolite seeds. Applicability of zeolites and mesoporous materials including newly synthesized SM-41 to adsorption of VOCs was investigated by adsorpti...
Advisors
Ihm, Son-Kiresearcher임선기researcher
Description
한국과학기술원 : 생명화학공학과,
Publisher
한국과학기술원
Issue Date
2005
Identifier
249437/325007  / 020005145
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 생명화학공학과, 2005.8, [ xii, 150 p. ]

Keywords

adsorption; mesoporous molecular sieves; VOC; zeolites; catalytic oxidation; 촉매산화; 흡착; 메조포어 분자체; 휘발성 유기화합물; adsorption; mesoporous molecular sieves; VOC; zeolites; catalytic oxidation; 촉매산화; 흡착; 메조포어 분자체; 휘발성 유기화합물

URI
http://hdl.handle.net/10203/28975
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=249437&flag=dissertation
Appears in Collection
CBE-Theses_Ph.D.(박사논문)
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