徐秀峰,索掌怀.MnOx/Al2O、MnOx/BaO—Al2O3催化剂的制备、表征及其对甲烷低温燃烧的催化活性[J].分子催化,2001,(4):259-262
MnOx/Al2O、MnOx/BaO—Al2O3催化剂的制备、表征及其对甲烷低温燃烧的催化活性
Preparation, Characterization of MnOx/Al2O3 , MnO x/BaO-Al2O3 Catalysts and their Catalytic Activity for CH4 Low Temperature Combustion
  修订日期:2000-09-14
DOI:
中文关键词:  MnOx/Al2O MnOx/BaO-Al2O3 制备 表征 催化活性 甲烷 低温燃烧 氧化锰 氧化铝 氧化钡 负载型催化剂
英文关键词:MnO x/Al-2O-3,MnO x/BaO-Al-2O-3,Preparation,Characterization,Catalytic activity
基金项目:山东省科技厅资助项目,981206403,
徐秀峰  索掌怀
烟台大学应用催化研究所,
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中文摘要:
      改变锰的负载最及前驱体,制备了MnOx/Al2O、MnOx/BaO-Al2O3系列催化剂;采用X-射线衍射(XRD)、程序升温还原(TPR)对催化剂进行表征,并考察了BaO的加入对CH4低温燃烧催化活性的影响。结果表明,用醋酸锰作前驱体与用硝酸锰制备的催化剂相比,其活性组分分散性好、氧中心活性高,催化CH4低温燃烧的活性高。在Al2O3载体中掺入BaO,催化剂的氧中心数目的没有明显变化,但氧中心活性有所下降,因而降低了对CH4低湿燃烧的催化活性。
英文摘要:
      MnO x/Al-2O-3 and MnO x/BaO-Al-2O-3 catalysts were prepared by changing the preparation parameters, such as amount of Mn loading, precursor, and were characterized in detail by XRD,TPR techniques. The results show that catalysts from the same precursor with higher MnO x contents have higher catalytic activity in CH-4 low temperature combustion. The catalytic activity of MnO x/Al-2O-3 prepared from manganese acetate as the precursor is higher than that from manganese nitrate, because the dispersion of Mn-2O-3 and the activity of the oxygen centers in the former are higher than that in the latter. No change in quantity of active oxygen is showed, but the activity of oxygen centers in Mn-2O-3 drops slightly for MnO x/BaO-Al-2O-3, so its catalytic activity for CH-4 low combustion is lower than that of MnO x/Al-2O-3.
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