六铝酸盐LaMAl_(11)O_(19-δ)催化CO_2重整甲烷制合成气  

Hexaaluminate Oxides LaMAl_(11)O_(19-δ)Catalyzing CO_2 Reforming of Methane to Synthesis Gas

作　　者：徐占林[1] 崔湘浩[1] 甄明[2] 毕颖丽[1] 甄开吉[1] 

机构地区：[1]吉林大学化学系 [2]吉林大学理论化学研究所,长春130023

出　　处：《高等学校化学学报》2000年第2期298-300,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金!(批准号 :29973012)资助

摘　　要：In this paper, a series of hexaaluminate oxides, LaMAl 11 O 19-δ (M=Fe, Co, Ni, Mn and Cu), were prepared using transition metals M to substitute Al in the hexaaluminate lattices. XRD analyses indicated that the series of hexaaluminates had almost the same magnetoplumbite crystal structure, however, they exhibted different reducibility and catalytic activities for CO 2 reforming of methane to synthesis gas. Among the LaMAl 11 O 19-δ samples, LaNiAl 11 O 19-δ showed the best catalytic activity for the reaction at 1 053 K for 2 h, the conversion of CH 4 and CO 2 was 98.8% and 97.6%, respectively, and the catalytic activities of rest Msubstituted catalysts were extremely lower than that of LaNiAl 11 O 19-δ . The sequence of affection on catalytic activity of transition metal M for the topic reaction was NiCo>Fe> Mn> Cu.In this paper, a series of hexaaluminate oxides, LaMAl 11 O 19-δ (M=Fe, Co, Ni, Mn and Cu), were prepared using transition metals M to substitute Al in the hexaaluminate lattices. XRD analyses indicated that the series of hexaaluminates had almost the same magnetoplumbite crystal structure, however, they exhibted different reducibility and catalytic activities for CO 2 reforming of methane to synthesis gas. Among the LaMAl 11 O 19-δ samples, LaNiAl 11 O 19-δ showed the best catalytic activity for the reaction at 1 053 K for 2 h, the conversion of CH 4 and CO 2 was 98.8% and 97.6%, respectively, and the catalytic activities of rest Msubstituted catalysts were extremely lower than that of LaNiAl 11 O 19-δ . The sequence of affection on catalytic activity of transition metal M for the topic reaction was NiCo>Fe> Mn> Cu.

关 键 词：六铝酸盐催化剂 甲烷 二氧化碳重整 合成气 

分 类 号：O623.11[理学—有机化学] O643.32[理学—化学]