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甲烷部分氧化制合成气反应中催化剂积炭的研究(英文)
Authors
万惠霖
严前古
+5 more
吴廷华
李基涛
杨乐夫
罗春容
翁维正
Publication date
28 May 2000
Publisher
Abstract
Ni/Al_2O_3催化剂上甲烷部分氧化制合成气反应是在固定床流动反应装置上进行的。考察了催化剂的床层温度、反应压力、空速和原料气配比对催化剂积炭产生的影响。实验结果表明,积炭速率随催化剂床层温度的升高而降低,当温度低于70℃时,积炭速率骤增:积炭总是发生在催化剂床层的下段;若空速超过3.0×10~5h~(-1),积炭速率随空速增加而明显降低。从FTIR实验结果可知,吸附在Ni/Al_2O_3催化剂表面上的CO,一部分歧化生成了CO_2和C。综上所述,催化剂表面积炭主要来源于以下两个反应: 2CO→C+CO_2,CO+H_2 = C+H_2
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Last time updated on 16/06/2016