焙烧温度对负载型Mo基催化剂结构与甲烷化性能的影响

被引：1

作者：

秦绍东

龙俊英

田大勇

汪国高

孙守理

孙琦

机构：

[1] 北京低碳清洁能源研究所煤化工催化剂中心

来源：

天然气化工(C1化学与化工) | 2014年 / 39卷 / 05期

关键词：

甲烷化; 钼基催化剂; 耐硫; 三氧化二铝; 二氧化铈; SEM;

D O I：

暂无

中图分类号：

O643.36 [催化剂];

学科分类号：

081705 ;

摘要：

以浸渍法制备得到的CeO2-Al2O3复合氧化物载体于500℃或700℃焙烧处理,浸渍Co和Mo物种后得到Co-Mo/(CeO2-Al2O3)催化剂前驱体,再于500℃或700℃进行焙烧处理得到催化剂。采用N2物理吸附、H2程序升温还原、X射线衍射及扫描电子显微镜对催化剂进行了表征,在固定床上于550℃,3MPa,5000h-1,n(H2)/n(CO)为1.0且含有H2S的合成气中对催化剂的甲烷化性能进行了测试。结果表明CeO2-Al2O3载体的焙烧温度对催化剂比表面积有较大影响,而催化剂表面Co与Mo物种的分散度主要受催化剂前驱体焙烧温度的影响。当CeO2-Al2O3载体于500℃焙烧催化剂前驱体于700℃焙烧后,Co与Mo物种的分散度最好,催化剂甲烷化活性最高。

引用

页码：12 / 15+44 +44

页数：5

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