CAJ | 학술논문

以溶剂挥发诱导自组装方法合成的有序介孔氧化铝（MA）为载体负载铂，制备了 Pt/MA 催化剂。考察了载体和催化剂焙烧温度对 Pt/MA 催化剂催化纤维素转化性能的影响。采用 X 射线衍射、N2物理吸附、透射电镜和 NH3程序升温脱附等手段对载体和催化剂进行了表征，随着载体焙烧温度的升高，氧化铝的有序度、晶相、比表面积、酸量、铂粒径大小均有明显变化。催化结果表明，载体焙烧温度和催化剂焙烧温度对催化剂的催化性能有显著影响。以800℃焙烧的氧化铝为载体负载铂，再经400℃焙烧制得的催化剂活性最高，六元醇的选择性达到了78．5％。
이용제휘발유도자조장방법합성적유서개공양화려（MA）위재체부재박，제비료 Pt/MA 최화제。고찰료재체화최화제배소온도대 Pt/MA 최화제최화섬유소전화성능적영향。채용 X 사선연사、N2물리흡부、투사전경화 NH3정서승온탈부등수단대재체화최화제진행료표정，수착재체배소온도적승고，양화려적유서도、정상、비표면적、산량、박립경대소균유명현변화。최화결과표명，재체배소온도화최화제배소온도대최화제적최화성능유현저영향。이800℃배소적양화려위재체부재박，재경400℃배소제득적최화제활성최고，륙원순적선택성체도료78．5％。
Mesoporous Pt/MA catalysts were prepared using the ordered mesoporousγ-Al2 O3 (MA)obtained via one-pot evapora-tion-induced self-assembly method as a carrier-supported platinum.The effects of calcination temperature of the supports and the catalysts on the catalytic performance for conversion of cellulose were investigated.The properties of the supports and the cata-lysts were characterized by the means of X-ray diffraction (XRD),N2 physisorption (BET),transmission electron microscopy (TEM)and temperature-programmed desorption of NH3 (NH3-TPD).As the calcination temperature increases,the crystal structure,the specific surface area,the size of platinum particles and the amount of the acid sites change obviously.The catalytic reaction results reveal that the catalytic properties are affected significantly by the calcination temperature of support and catalyst. The Pt/γ-Al2 O3 catalyst calcinated at the temperature of 400 ℃ with theγ-Al2 O3 support calcinated at 800 ℃ shows the best cat-alytic activity,which makes the selectivity of hexitol up to 78.5%.