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김민일,서상완,임지선 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0
In this paper, activated carbon was prepared by malic acid treated fly ash and petroleum pitch to increase SO<sub>2</sub> gas removal efficiency of activated carbon. The properties of prepared samples was analyzed by XPS, BET and SO<sub>2</sub> gas adsorption. During the activation process, the introduced carboxyl groups form pores at around the fly ash, and these pores were connected other pores formed by KOH. These connecting of pores is developed the pass way connecting the fly ash and outside of activated carbon. The SO<sub>2</sub> gas removal amount was increased by the synergy effect of Al<sub>2</sub>O<sub>3</sub> in fly ash and pore structure of the activated carbon.
The effect of fluorine functional groups on carbonization of cellulose fibers
김민일,김도영,김민지,임지선,이영석 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.1
Fluorine functional groups in cellulose fibers were introduced by fluorination for increasing of carbonization yield. The surface functional groups and thermal properties of fluorinated cellulose fibers were analyzed by X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA), respectively. Carbonization of fluorinated cellulose fibers was accomplished in N<sub>2</sub> gas at 800 °C for 1h, and the carbonization yield was measured. The content of fluorine functional groups in fluorinated cellulose fibers was increased according to increasing of fluorination temperature. However in high fluorination temperature (at 180 °C), the content of fluorine functional groups was decreased by the high heat energy during fluorination. Introduced fluorine functional groups increases the carbonization yield of cellulose fibers by increasing of double bond (C=C bond). The carbonization yield was increased 52.5% compared to pure cellulose fibers by fluorination at 120 °C.