CAJ | 학술논문

采用St?ber法和浸渍法制备了SiO2修饰的TiO2载体，并用浸渍法制备了钴基费－托合成催化剂，考察了其费－托合成催化性能。分别采用透射电子显微镜（ TEM）、X－射线衍射（ XRD）、低温氮气物理吸附－脱附、氢气程序升温还原（ H2－TPR）等技术对载体和催化剂进行了表征，在固定床反应器上对催化剂的催化性能进行了评价。结果表明：SiO2的引入能减弱钴物种与TiO2之间的相互作用力，提高钴物种的还原性，使催化剂的催化性能显著提高。
채용St?ber법화침지법제비료SiO2수식적TiO2재체，병용침지법제비료고기비－탁합성최화제，고찰료기비－탁합성최화성능。분별채용투사전자현미경（ TEM）、X－사선연사（ XRD）、저온담기물리흡부－탈부、경기정서승온환원（ H2－TPR）등기술대재체화최화제진행료표정，재고정상반응기상대최화제적최화성능진행료평개。결과표명：SiO2적인입능감약고물충여TiO2지간적상호작용력，제고고물충적환원성，사최화제적최화성능현저제고。
SiO2 modified TiO2 supports were synthesized by St?ber and impregnation methods.The cobalt catalysts supported on the SiO2 modified TiO2 were prepared by incipient wetness impregnation and the performances in Fischer-Tropsch( FT) synthesis were investigated.The supports and catalysts were characterized by TEM, XRD, H2-TPR and nitrogen adsorption-desorption.The FT catalytic performances of catalysts were tested on fix-bed reactor.The results indicated that SiO2 could decrease the interaction of support and cobalt oxide and improve the reducibility of cobalt oxide, thus significantly improve the FT catalytic performances of catalysts.