화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.30, No.4, 852-859, April, 2013
DOI10.1007/s11814-013-0004-0  Export Citation
Continuous phenol hydroxylation over ultrafine TS-1 in a side-stream ceramic membrane reactor
Xiulong Jiang1, 2, Fei She1, 2, Hong Jiang1, 2, Rizhi Chen1, 2, †, Weihong Xing1, and Wanqin Jin1
  • 1State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, P. R. China
  • 2Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction, Nanjing University of Technology, Nanjing 210009, P. R. China
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A side-stream ceramic membrane reactor system was developed that can facilitate the in situ separation of ultrafine catalysts from the reaction mixture and make the production process continuous. Continuous hydroxylation of phenol to dihydroxybenzene over ultrafine titanium silicalites-1 (TS-1) was taken as a model reaction to evaluate the feasibility and performance of the membrane reactor system. The effects of membrane pore size and operation conditions (residence time, temperature, catalyst concentration, phenol/H2O2 molar ratio) on the performance of the reactor system were examined via single factor experiments. We demonstrated that the membrane pore size and operation conditions greatly affect the conversion, selectivity and filtration resistance. The phenol conversion and dihydroxybenzene selectivity remain stable at about 11% and 95% in a 20-h continuous run, respectively.
Keywords:TS-1;Phenol Hydroxylation;Membrane Reactor;Ceramic Membrane;Stability
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