검색결과

검색조건
좁혀보기
검색필터
결과 내 재검색

간행물

    분야

      발행연도

      -

        검색결과 19

        1.
        2016.05 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        Glass-ceramics were developed many years ago and have been applied in many fields such as electronics, chemistry, optics, etc. Much is already known about glass-ceramic technology, but many challenges in glass-ceramic research are still unresolved. Recently, large amounts of slag have steadily increased in the steel industry as by-products. To promote recycling of industrial waste, including steel industry slags, many studies have been performed on the fabrication of basalt-based highstrength glass-ceramics. In this study, we have fabricated such ceramics using various slags to replace high performance castbasalt, which is currently imported. Glass-ceramic material was prepared in similar chemical compositions with commercial cast-basalt through a pyro process using slags and power plant by-product (Fe-Ni slag, converter slag, dephosphorization slag, Fly ash). The properties of the glass-ceramic material were characterized using DTA, XRD, and FE-SEM; measurements of compressive strength, Vicker’s hardness, and abrasion were carefully performed. It is found that the prepared glass-ceramic material showed better performance than that of commercial cast-basalt.
        4,000원
        3.
        2014.06 KCI 등재 서비스 종료(열람 제한)
        Methanol is one of the clean burning fuel with versatile applications. As a combustion fuel, it provides extremely low emissions. Methanol can also be used as a primary transporation fuel or a fuel additive and expecially as a raw metalial for methyl t-butyl ether. Methanol synthesis from synthetic gas was carried out in the Ru-CuO/ZnO/Al2O3 catalytic system. The influence of various factors, such as the reaction temperature, the concentration of ruthenium (Ru) and the reaction pressure was discussed, respectively, and the most preferred condition were obtained. The results showed that metanol synthesis could be prepared from carbon monoxide and hydrogen under reaction conditions. The reaction of Ru-CuO/ZnO/Al2O3 catalyst (E-catalyst) was operated most preferably at 160oC and 40 bar.