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Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received March 26, 2008
Accepted April 16, 2008

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Ti-grafted SBA-15 촉매를 이용한 경유유분 중의 황화합물의 선택산화탈황 특성

Characteristics of Oxidative Desulfurization(ODS) of Sulfur Compounds in Diesel Fuel over Ti-grafted SBA-15 Catalyst

조진수^{1 2} 정광은¹ 채호정¹ 김철웅¹ 정순용^1† 오성근²

Chin-Soo Cho^{1 2} Kwang-Eun Jeong^{1 3} Ho-Jeong Chae^{1 3} Chul-Ung Kim^{1 3} Soon-Yong Jeong^{1 3†} Sung-Geun Oh²

¹한국화학연구원 석유대체연구센터, 305-600 대전시 유성구 장동 100 ²한양대학교 응용화공생명공학부, 133-791 서울시 성동구 행당동 17

¹Alternative Chemicals/Fuel Research Center, KRICT, 100, Jang-dong, Yuseong-gu, Daejeon 305-600, Korea ²Department of Chemical Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Korea ³, Korea

Korean Chemical Engineering Research, October 2008, 46(5), 845-851(7), NONE Epub 10 November 2008

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Abstract

티타늄이 그라프팅(grafting)된 SBA-15 촉매(Ti-grafted SBA-15)상에서 TBHP(tert-butylhydroperoxide)를 산화제로 사용하여 회분식 반응기에서 모델 황화합물 및 실제 디젤 유분(LCO; Light Cylcle Oil)의 선택산화탈황(ODS; Oxidative Desulfurization) 반응을 수행하였으며, 티타늄 함량, 산화제/황의 몰비, 반응온도의 효과 및 반응속도상수와 활성화 에너지를 조사하였다. 티타늄이 5 wt% 도입된 Ti-grafted SBA-15 촉매는 난분해성 황화합물인 디벤조티오펜(DBT; Dibenzothiophene)과 4, 6-디메틸디벤조티오펜(4, 6-Dimethyldibenzothiophene)의 설폰(sulfone) 화합물로의 산화반응 시 표준반응조건(TBHP/S=2.5, 80 oC, 1 atm)에서 반응개시 후 20분 뒤 100% 전환되는 우수한 활성을 나타내었다. 실제 디젤유분인 LCO를 원료로 성능 시험을 한 결과 활성이 우수하게 나타났으며 Ti-grafted SBA-15 촉매는 LCO에 함유 되어 있는 난분해성 황화합물의 선택적 산화탈황촉매로써 응용 가능성을 보였다.

Oxidative desulfurizaton of model sulfur compounds and Industrial diesel fuel(LCO; Light Cycle Oil) over Ti-grafted SBA-15 catalyst was studied in a batch reactor with tert-Butyl Hydroperoxide(TBHP) as oxidant. Effects of Ti loading, TBHP/Sulfur mole ratio, reaction temperature on ODS activity and kinetic parameters were investigated. Tigrafted SBA-15 catalyst showed higher sulfur removal activity in the oxidative desulfurization reaction of refractory sulfur compounds(DBT and 4, 6-DMDBT) and LCO, suggesting that Ti-grafted SBA-15 catalyst could be a good candidate for ODS catalyst.

Keywords

Oxidative Desulfurization Titanium DBT 4 6-DMDBT SBA-15 LCO Grafting Tert-Butyl Hydroperoxide

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