Applied Chemistry for Engineering, Vol.30, No.1, 49-53, February, 2019
Furfuryl 알코올의 선택적 산화 전환에 대한 수화 이산화망간 나노와이어의 One-pot 합성
One-pot Synthesis of Hydrous MnO2 Nanowires for Selective Oxidative Transformation of Furfuryl Alcohol
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초록
간단한 볼-밀 방법에 의한 one-pot 합성법을 통해 수화된 이산화망간 나노와이어가 합성되었다. 이렇게 준비된 이산화망간 나노와이어는 주사 전자 현미경(SEM), 투과 전자 현미경(TEM), X-선 회절(XRD) 및 Brunauer-Emmett-Teller (BET)로 특성화되었고, 적당한 크기(4-5 nm)와 형태에서 좋은 촉매적 활성을 보였다. 기질 Furfuryl 알코올을 선택하여 톨루엔 용매를 사용하고 산소 1기압 및 온도 100 ℃에서 반응시켰다. 이산화망간 나노와이어 촉매는 뛰어난 선택성과 전환성을 보이며 월등한 furfural 수율을 나타내었다. 또한 재사용 촉매 성능 테스트에서, 5번 이상 재실험 중 촉매 활성의 손실이 거의 없어 좋은 기계적 강도를 보여주었다.
Hydrous MnO2 nanowires were easily synthesized by an one-pot synthesis with a simple hydrothermal method. As prepared hydrous MnO2 nanowires were characterized with scanning emission microscopy (SEM), transmit emission microscopy (TEM), X-ray diffraction (XRD), and Brunauer-Emmett-Teller (BET). They showed a good catalytic activity with the suitable nano-size of 4-5 nm and morphology. The furfuryl alcohol was selected as a substrate and the reaction was carried out in a toluene solvent at 100 ℃ under the atmospheric pressure of oxygen. The hydrous MnO2 nanowire catalyst exhibited an excellent yield of furfural with the first-rate selectivity and conversion. The catalytic performance during recycle tests was also carried out and the catalyst showed a good mechanical strength with a negligible loss in the activity over five reaction cycles.
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