还原温度对双介孔钴基催化剂费-托合成性能的影响

黄巍; 王俊刚; 孙志强; 刘俊义; 侯博; 贾丽涛; 李德宝

还原温度对双介孔钴基催化剂费-托合成性能的影响

1.
潞安(矿业)集团有限公司, 山西长治 046204;
2.
中国科学院山西煤炭化学研究所煤转化国家重点实验室, 山西太原 030001

基金项目: 国家自然科学基金（21203232，21273265）。

详细信息

通讯作者:
李德宝，Tel：0351-4121793；E-mail：dbli@sxicc.ac.cn。

中图分类号: O643.3
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- 被引次数: 0
出版历程
- 收稿日期: 2013-05-11
- 修回日期: 2013-10-03
- 刊出日期: 2014-01-30

Effect of reduction temperature on performance of double mesoporous Co-based catalysts in Fischer-Tropsch synthesis

1.
Shanxi Lu'an (mining) Group Co.Ltd, Changzhi 046204, China;
2.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China

摘要

摘要: 通过等体积浸渍法制备了双介孔钴基催化剂，采用XRD、BET、SEM、H₂-TPR等手段考察了催化剂的性质，并研究了还原温度对催化剂结构及费托合成催化性能的影响。结果表明，随着还原温度的提高，催化剂活性位增加，活性增加，但增加到一定程度后活性降低，而甲烷选择性随着还原温度的提高逐渐增加，这是反应过程中催化剂表面存在的钴氧化物，使得水煤气反应变得活跃，烃产物移向低碳烃。
- 费-托合成 /
- 双介孔 /
- 还原温度 /
- 钴基催化剂
Abstract: The double mesoporous Co-based catalysts were prepared by incipient-wetness impregnation method, which were characterized by the technology of XRD, BET, SEM and H₂-TPR. And the influences of reduction temperature on the structure and performance of the catalysts in Fischer-Tropsch were investigated. The result showed that with the increase of reduction temperature, the active sites of catalysts increased, and the activity increased. After the activity reached a certain level, it began to decline. And the methane selectivity increased with the increase of reduction temperature. The related reactive performance might be due to the cobalt oxides on the surface of catalysts formed in the reaction, which made the water gas shift reaction become active, and the hydrocarbon products moved to low hydrocarbons.
- Fischer-Tropsch synthesis /
- double mesoporous /
- reduction temperature /
- Co-based catalyst

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参考文献(15)

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