Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Propylene Epoxidation using Titanium-containing Zeolite Catalysts

티타늄 함유 제올라이트 촉매를 이용한 프로필렌 에폭시화반응

  • Ban, Han-Ju (Department of Chemical Engineering, Inha university) ;
  • Lee, Kyu-Yong (Department of Chemical Engineering, Inha university) ;
  • Lee, Joong-Ki (Department of Chemical Engineering, Inha university) ;
  • Chung, Sung-Taik (Department of Chemical Engineering, Inha university) ;
  • Ahn, Wha-Seung (Department of Chemical Engineering, Inha university)
  • 반한주 (인하대학교 화학공학과) ;
  • 이규용 (인하대학교 화학공학과) ;
  • 이중기 (인하대학교 화학공학과) ;
  • 정성택 (인하대학교 화학공학과) ;
  • 안화승 (인하대학교 화학공학과)
  • Received : 2005.10.13
  • Accepted : 2006.01.11
  • Published : 2006.04.30
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Abstract

Propylene epoxidation by $H_2O_2$ (30％ aqueous) as oxidant was studied in a semi-batch reactor using TS-1 catalyst: Effects of reaction temperature, time, pressure, solvent, catalyst and $H_2O_2$ concentration on $H_2O_2$ conversion (limiting reagent) and product distribution were investigated. Potential inhibition by propylene oxide on the epoxidation rate was also examined. Ti-MCM-22 with MWW zeolytic structure was found to exhibit better performance than TS-1 with MFI structure, provide that a proper choice of solvent(acetonitrile) is made.

티타늄 함유 제올라이트 촉매 TS-1과 Ti-MCM-22를 이용하여 과산화수소를 산화제로 한 프로필렌 에폭시화반응을 수행하였으며, 반응에 미치는 촉매량, 한계 반응물인 과산화수소의 양, 교반 속도, 반응 온도, 압력, 용매 및 생성물 억제 효과를 조사하였다. TS-1은 우수한 부분 산화반응 촉매로 표준 반응조건($45^{\circ}C$, 7 atm, 0.5 g catalyst, 2.5 wt％ $H_2O_2$, 메탄올 용매, 1,000 rpm 교반)에서 95％ 이상의 $H_2O_2$ 전화율과 94％ 이상의 산화프로필렌(propylene oxide, PO) 선택도를 얻을 수 있었다. 한편 아세토나이트릴(acetonitrile) 용매 하에서 반응 실험을 한 결과 Ti-MCM-22는 99％의 $H_2O_2$ 전화율과 100％에 근접하는 산화프로필렌 선택도를 보이며, 양론비에 가까운 수율을 보였다.

Keywords

Acknowledgement

Supported by : 한국학술진흥재단

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