Ru助剂对Co/SiO<sub>2</sub>/HZSM-5催化剂合成航空燃油类烃的影响

李宇萍; 陈伦刚; 王铁军; 马隆龙; 吴创之; 仇松柏

Ru助剂对Co/SiO₂/HZSM-5催化剂合成航空燃油类烃的影响

中国科学院广州能源研究所可再生能源重点实验室, 广东广州 510640

基金项目: 国家自然科学基金（51276183，51036006）；国家自然科学基金中日国际合作项目（51161140331）；国家重点基础研究发展规划（973计划，2013CB228105）。

详细信息

通讯作者:
王铁军（1972- ），男，研究员，主要从事生物质化工转化研究，E-mail：wangtj@ms.giec.ac.cn；马隆龙（1964- ），男，研究员，主要从事生物质高效转化研究。

中图分类号: O643.3
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出版历程
- 收稿日期: 2013-10-10
- 修回日期: 2014-02-13
- 刊出日期: 2014-06-30

Ru modified Co/SiO₂/HZSM-5 catalysts for jet fuel-range hydrocarbons synthesis

CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Guangzhou 510640, China

摘要

摘要: 以中孔硅胶和微孔HZSM-5分子筛为复合载体，添加Ru制备了钴基催化剂，考察了Ru添加量（1%~4%，质量分数）对催化剂结构和固定床费托合成航空燃油类烃的影响。实验结果表明，制备的复合载体催化剂有一定的微孔和中孔结构，Ru的添加有利于Co分散，Ru促进的催化剂低温还原过程提高了催化剂在150~750 ℃的还原度和CO转化率，复合载体中HZSM-5分子筛利用其微孔结构，提高了异构烃的收率。当Ru负载量为1%时，CO转化率达到62.8%，航空燃油类烃的收率达到37.7%，包括约10.9%的异构烃。Ru负载量超过2%时，增强的催化剂CO加氢活性和CH₄选择性，导致合成产物向低碳烃方向偏移。
- Co/SiO₂ /
- HZSM-5 /
- 钌 /
- 费托合成 /
- 航空燃油类烃
Abstract: Selective synthesis of jet fuel-range hydrocarbons (C_8~18) was investigated in a fixed-bed reactor over Ru modified cobalt-based catalysts, supported on mesoporous SiO₂ and microporous HZSM-5. The effect of Ru adding amount (1%~4%) and the textual and structural properties of the catalysts on Fischer-Tropsch synthesis(FTS) performance were studied. The results showed that the tailor-made Ru-Co/SiO₂/HZSM-5 catalysts maintained both meso-and micro-pores. Co dispersion and reducibility at 150~750 ℃ were enhanced with the increase of Ru amount, which resulted in the increase of CO conversion. In the same time, the yield of iso-paraffins was enhanced due to the existence of microporous structure of HZSM-5. Thus CO conversion of 62.8% and yield of jet fuel-range hydrocarbons (C_8~18) of 37.7%, including 10.9% of iso-paraffins, were achieved over 1% Ru modified Co/SiO₂/HZSM-5. The FTS product distribution shifted to low-carbon hydrocarbons when Ru amount was higher than 2% due to the increased CO hydrogenation rate and CH₄ selectivity.
- Co/SiO₂ /
- HZSM-5 /
- Ru /
- Fischer-Tropsch synthesis /
- jet fuel-range hydrocarbons

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参考文献(15)

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