화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2021년 가을 (10/27 ~ 10/29, 광주 김대중컨벤션센터)
권호 27권 2호, p.2167
발표분야 촉매 및 반응공학
제목 Enhanced reactivity and stability in methane dehydro-aromatization over Mo/HZSM-5 physically mixed with NiO
초록 While Mo/HZSM-5 is known as a catalyst for methane dehydro-aromatization (MDA), low activity and rapid deactivation have been considered issues to be overcome. In order to improve catalytic performance, NiO was physically mixed with Mo/HZSM-5, which significantly enhanced the yield for aromatic compounds (benzene and toluene), and improved catalytic stability. Combined XRD, CH4–TPSR, CO chemisorption, TEM-EDS, NH3–TPD, pyridine FT–IR, TPO, visible Raman, and N2 physisorption analysis confirmed that NiO promoted the dispersion of MoCx active sites and suppressed coke formation on MoCx, by converting coke precursors to carbon nanotube (CNT) on itself. As a result, after the reaction, the pore size and pore volume did not change much, which is attributed to the improved stability. This study demonstrates that physically mixed NiO can act as an excellent catalyst promotor for MDA.
저자 남기훈, 류혜원, 김도희
소속 서울대
키워드 촉매
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