서지주요정보
n-헥산 산화반응에서 변형된 알루미나 담지 팔라듐 촉매의 특성에 관한 연구 = A study on the characteristics of modified Pd/Alumina catalysts for n-Hexane oxidation
서명 / 저자 n-헥산 산화반응에서 변형된 알루미나 담지 팔라듐 촉매의 특성에 관한 연구 = A study on the characteristics of modified Pd/Alumina catalysts for n-Hexane oxidation / 임충열.
저자명 임충열 ; Im, Choong-Youl
단체명 생명화학공학과
발행사항 [대전 : 한국과학기술원, 2002].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8012967

소장위치/청구기호

학술문화관(문화관) 보존서고

MCBE 02019

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Effects of the state of the active palladium component and the additives on alumina supported Pd catalyst for the total oxidation of n-hexane were investigated. The catalysts were characterized with BET, XRD, XPS and CO chemisorption. TPO (temperature-programmed oxidation) experiments were also carried out. The reaction rates of n-hexane oxidation over the supported palladium catalysts increased significantly when the catalysts were pre-reduced at temperatures higher than 400℃. Metallic palladium ($Pd^0$) seemed to be more active than oxidized palladium (PdO) for the oxidation of n-hexane at lower temperatures even if the palladium oxide was known to be active phase for high-temperature combustion of methane. Oxidation state and particle size of palladium were the main parameters for determining the catalytic activities. Larger particle size and reduced surface were more desirable for VOC oxidation. The oxidation activity of reduced palladium catalysts, however, decreased gradually during oxidation reaction at lower temperatures and became equivalent to the activity of oxidized palladium catalysts. This low-temperature deactivation was attributed to the deposition of partially oxidized organics on the active sites. M-modification (M = La, Ce and W) showed positive effects on the catalyst performance after high-temperature reduction and there was an optimum M-loading. Among these promoters, tungsten was the most effective, being regardless of impregnation sequence. The W added Pd catalysts exhibited the lower value of Pd 3d binding energy and the higher amount of CO chemisorbed than Pd only catalyst.

서지기타정보

서지기타정보
청구기호 {MCBE 02019
형태사항 x, 91 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Choong-Youl Im
지도교수의 한글표기 : 임선기
지도교수의 영문표기 : Son-Ki Im
학과명칭변경 : 화학공학과가 생명화학공학과로 변경됨
학위논문 학위논문(석사) - 한국과학기술원 : 생명화학공학과,
서지주기 참고문헌 : p. 79-91
주제 휘발성유기물
촉매 산화
팔라듐 촉매
n-헥산
volatile organic compound
catalytic oxidation
palladium catalyst
n-hexane
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