Ni取代六铝酸镧催化剂LaNiAl_(11)O_(19)表面积炭研究  

On the Carbon Deposition on the Ni-Substituted Hexaaluminate Catalyst LaNiAl_(11) O_(19)

作　　者：徐占林[1] 林险峰[1] 李青仁[1] 刘延[2] 周广栋[2] 毕颖丽[2] 甄开吉[2] 

机构地区：[1]四平师范学院化学系,四平136000 [2]吉林大学化学系

出　　处：《应用化学》2001年第11期908-911,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金资助课题 ( 2 99730 12 )

摘　　要：通过 TEM、XPS、TGA、TPR-CO2 技术 ,对在 Ni取代六铝酸镧催化剂 La Ni Al1 1 O1 9表面上的甲烷裂解积炭、甲烷二氧化碳重整积炭及二氧化碳的消炭行为进行了研究 ,以探索该催化剂表面积炭形貌、来源、积炭物种以及积炭活性 .结果表明 ,甲烷具有相当高的裂解积炭活性 ,裂解后生成炭化物 ( carbide炭 )和石墨炭两种不同活性的炭种 ;二氧化碳的解离活性则相对较低 。The reactions of methane decomposition to deposited carbon, CO 2 reforming of methane to deposited carbon and CO 2 elimination of carbon over hexaaluminate LaNiAl 11 O 19 catalyst have been studied as a function of the appearance, sources, kinds and activities of deposited carbon by TEM, XPS, TGA, TPR CO 2 techniques. The results showed that methane exhibited rather high decomposition activity and carbide carbon and graphitic carbon were detected. However, the activity of CO 2 decomposition to deposited carbon was lower, but its activity of eliminating carbon was higher.

关 键 词：甲烷 二氧化碳 积炭 六铝酸镧 LaNiAl11O19 催化剂 镍取代 合成气 催化重整 催化活性 

分 类 号：TE665.3[石油与天然气工程—油气加工工程] O643.361[理学—物理化学]