화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.27, No.6, 1755-1759, November, 2010
DOI10.1007/s11814-010-0279-3  Export Citation
Production of middle distillate through hydrocracking of paraffin wax over NiMo/TiO2-SiO2 catalysts
Joongwon Lee, Sunhwan Hwang, Sang-Bong Lee1, and In Kyu Song†
  • School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Shinlim-dong, Kwanak-gu, Seoul 151-744, Korea
  • 1Korea Research Institute of Chemical Technology, Daejeon 305-600, Korea
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Titania-silica (TS(X), X=19, 26, 55, 70, and 79) supports with different titania content (X, wt%) were prepared by a precipitation method. NiMo/TS(X) catalysts prepared by an incipient wetness method were then applied to the production of middle distillate through hydrocracking of paraffin wax. Successful formation of NiMo/TS(X) (X=19, 26, 55, 70, and 79) catalysts was confirmed by ICP-AES and XRD measurements. NH3-TPD experiments were conducted to measure the acid property of NiMo/TS(X) (X=19, 26, 55, 70, and 79) catalysts. It was revealed that acidity of the catalyst played an important role in determining the catalytic performance in the hydrocracking of paraffin wax. Conversion of paraffin wax increased with increasing acidity of the catalyst, while yield for middle distillate showed a volcano-shaped curve with respect to acidity of the catalyst. Among the catalysts tested, NiMo/TS(26) retaining moderate acidity showed the highest yield for middle distillate.
Keywords:Hydrocracking;Middle Distillate;Titania-silica;Acid Property;NiMo Catalyst
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