| 학회 |
한국화학공학회 |
| 학술대회 |
2003년 가을 (10/24 ~ 10/25, 한양대학교) |
| 권호 |
9권 2호, p.2861 |
| 발표분야 |
촉매/반응공학 |
| 제목 |
Methylene chloride oxidation over alumina supported chromium oxide-based catalysts |
| 초록 |
Methylene chloride oxidation has been studied at 150-500℃, 1.0 bar and space velocity of 12000-1 over several supported chromium oxide-based catalysts. Effects of various chromium loadings, different supports, reaction conditions were investigated in an attempt to select an optimum catalyst for the reaction. Chromium oxides of different loadings ranging from 5 to 15 wt% on γ-Al2O3 were tested. At 350℃ 10 wt% loading exhibited methylene chloride conversion of 99%. γ-Al2O3 containing high surface areas gave the best performance when MgO, TiO2, SiO2 and γ-Al2O3 were tested as supports. Effects of reaction temperatures and feed compositions were also evaluated on a 10 wt% CrOx/γ-Al2O3 catalyst. Catalysts were characterized by BET surface area, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) which confirmed the presence of both Cr 3+and Cr6+ in the calcined catalyst. The formation of well dispersed Cr6+ active reaction sites for methylene chloride oxidation, play an important role in performances. |
| 저자 |
황이동, 김형식, 김병환, 이은구, 강 민, 박진원
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| 소속 |
연세대 |
| 키워드 |
methylene chloride; catalytic oxdation; chromium oxide |
| E-Mail |
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| 원문파일 |
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