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Investigation of Coke Formation on H-ZSM-5 Catalyst During Aromatization of C5 Paraffin and Olefin Using Optical and Fluorescence Microscopy
Chung. Young-Min 한국청정기술학회 청정기술 6 Pages
한국청정기술학회 청정기술 2013, Vol.19 No.3 327-332 (6 pages)
광학 및 형광 현미경을 이용한 실시간 촉매 모니터링 기술을 활용하여 C5 파라핀과 올레핀의 방향족화 반응 중 H-ZSM-5 촉매 표면에서 발생하는 코크 형성 과정을 시간별, 촉매 위치별로 관찰하였다. 실시간 자외-가시광 분광현미경(in-situ UV-vis microspectroscopy) 실험을 통해 반응 중 촉매 표면에서 발생하는 코킹 현상에 대한 정보를 실시간으로 얻을 수 있었으며, 그 결과, 결정의 위치와 반응물의 종류에 따라 코크 형성이 크게 달라짐을 확인하였다. 실시간 공초점형 형광현미경(in-situ confocal fluorescence microscopy)... -
Propylene Aromatization에 미치는 온도 및 촉매의 영향
박진우, 김상범, 곽윤철, 신기석, 박홍수, 함현식, Park. Jin-U, Kim. Sang-Bum, Kwak. Yun-Cheol, Shin. Ki-Seok, Park. Hong-Soo, Hahm. Hyun-Sik 한국유화학회 한국유화학회지 8 Pages
한국유화학회 한국유화학회지 2002, Vol.19 No.2 123-130 (8 pages)
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Aromatization of 1,3,5-Trisubstituted of 4,5-Dihydro-1H-Pyrazoles by In-Situ Generation of I+ from Hydrogen Peroxide/Acids/Iodide Potassium or Sodium Systems
Maleki. Behrooz, Veisi. Hojat 대한화학회 Bulletin of the Korean Chemical Society 5 Pages
대한화학회 Bulletin of the Korean Chemical Society 2011, Vol.32 No.12 4366-4370 (5 pages)
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An Expeditious Oxidative Aromatization of Hantzsch 1,4-Dihydropyridines to Pyridines Using Cetyltrimethylammonium Peroxodisulfate: A Phase Transferring Oxidant
Kumar. Parvin, Kumar. Ashwani 대한화학회 Bulletin of the Korean Chemical Society 5 Pages
대한화학회 Bulletin of the Korean Chemical Society 2010, Vol.31 No.8 2299-2303 (5 pages)
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Oxidative Aromatization of Hantzsch 1,4-Dihydropyridines by SiO2/P2O5-SeO2 under Mild and Heterogeneous Conditions
Paul. Satya, Sharma. Shivani, Gupta. Monika, Choudhary. Deepak, Gupta. Rajive 대한화학회 Bulletin of the Korean Chemical Society 3 Pages
대한화학회 Bulletin of the Korean Chemical Society 2007, Vol.28 No.2 336-338 (3 pages)
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Synthesis of 4-Methylene-2-cyclohexenones and Their Aromatization Reaction toward para-Methoxylmethyl Anisole Derivatives
Kim. Jeong-Mi, Lee. Ka-Young, Kim. Jae-Nyoung 대한화학회 Bulletin of the Korean Chemical Society 3 Pages
대한화학회 Bulletin of the Korean Chemical Society 2004, Vol.25 No.2 328-330 (3 pages)
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Expedient Syntheses of Unsymmetrical 4-Bromo-2-carboxyl-biaryls via Diels-Alder Cycloadditions of 3,5-Dibromo-2-pyrone with Vinyl Arenes, Followed by One Pot, Three Step Aromatization Reactions
Min. Soo-Hyun, Kim. Yong-Woo, Choi. Sun-Ju, Park. Kyung-Bae, Cho. Cheon-Gyu 대한화학회 Bulletin of the Korean Chemical Society 2 Pages
대한화학회 Bulletin of the Korean Chemical Society 2002, Vol.23 No.7 1021-1022 (2 pages)
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Characteristic Oxidative Aromatization Pattern of Isophorone, 4-Hydroxyisophorone, and Rearrangement of 4-Oxoisophorone Under a Strong Acidic Condition
Joe. Young Ae, Goo. Yang Mo, Lee. Youn Young 대한화학회 Bulletin of the Korean Chemical Society 2 Pages
대한화학회 Bulletin of the Korean Chemical Society 1991, Vol.12 No.3 253-254 (2 pages)
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흰쥐의 율무식이가 에스트로겐 생성에 미치는 영향
한국웰니스학회 한국웰니스학회지 2014, 제 9권 1호 19 215-224 (10 pages)
본 연구는 암컷 흰쥐를 실험대상으로 율무식이를 4주간 섭취시켜 체중변화와 estrogen의 생성에 미치는 영향을 알아보았다. 식 이조건은 기본식이군(A), 분말 율무를 증류수에 희석하여 강제투여방식으로 매일 2g투여군(B), 4g투여군(C), 6g투여군(D), 6g과 조 제된 율무 고형식이 투여군(E), 3일 간격으로 6g율무식이 투여군(F), 5일 간격으로 6g율무식이 투여군(G) 등 총 7군에서 율무식이 섭취량에 따른 변화를 관찰하여 다음과 같은 결과를 얻었다. 율무식이는 섭취량이 많을 수 록 체중증가가 억제되었으며, 에스트로 겐의 생성은... -
Preparation of carbon discs using petroleum-based binder pitch reformed with carbon black
Sangmin Lee, Kyung Hoon Kim, Young-Seak Lee 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2017, Vol.23 13 84-87 (4 pages)
coal tar-based pitches and petroleum-based pitches. The raw materials of the petroleum-based pitch are obtained through petroleum refining processes, such as fluidized catalytic cracking decant oil, vacuum residue and pyrolyzed fuel oil (PFO). These residue oils are reformed to petroleum-based pitches that are solid at room temperature and for which the molecular weight is controlled through cyclization, aromatization and polymerization conducted using high-temperature heat treatment [9-13]. -
Nitrogen-doped carbon nanosheets from polyurethane foams and removal of Cr(VI)
Jiaqi Duan, Baohua Zhang, Huailin Fan, Wenzhong Shen, Shijie Qu 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2017, Vol.22 7 60-69 (10 pages)
Nitrogen-doped carbon nanosheets with a developed porous structure were prepared from polyurethane foams by hydrothermal carbonization following ZnCl2 chemical activation. Scanning electron microscopy, thermogravimetric analysis, Fourier transform infrared spectroscopy, solid state 13C nuclear magnetic resonance (NMR) spectra and X-ray photoelectron spectroscopy were used to characterize the nitrogen-doped carbon nanosheet structure and composition. The removal of Cr(VI) by the N-doped carbon... -
Morphologies and surface properties of cellulose-based activated carbon nanoplates
Seulbee Lee, Min Eui Lee, Min Yeong Song, Se Youn Cho, Young Soo Yun, Hyoung-Joon Jin 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2016, Vol.20 5 32-38 (7 pages)
In this study, cellulose nanoplates (CNPs) were fabricated using cellulose nanocrystals obtained from commercial microcrystalline cellulose (MCC). Their pyrolysis behavior and the characteristics of the product carbonaceous materials were investigated. CNPs showed a relatively high char yield when compared with MCC due to sulfate functional groups introduced during the manufacturing process. In addition, pyrolyzed CNPs (CCNPs) showed more effective chemical activation behavior compared with...
