负载的Ni催化剂上植物油脂加氢脱氧制备第二代生物柴油

左华亮; 刘琪英; 王铁军; 史娜; 刘建国; 马隆龙

负载的Ni催化剂上植物油脂加氢脱氧制备第二代生物柴油

1.
中国科学院广州能源研究所可再生能源与天然气水合物重点实验室, 广东广州 510640;
2.
中国科学院研究生院, 北京 100049

基金项目: 国基NSFC/JST重大国际合作项目(51161140331); 国家重点基础研究发展规划(973计划, 2012CB215304)。

详细信息

通讯作者:
马隆龙,E-mail:mall@ms.giec.ac.cn。

中图分类号: TQ645.1
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出版历程
- 收稿日期: 2011-11-09
- 修回日期: 2012-01-27
- 刊出日期: 2012-09-29

Catalytic hydrodeoxygenation of vegetable oil over Ni catalysts to produce second-generation biodiesel

1.
Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China;
2.
Graduate University of Chinese Academy of Sciences, Beijing 100049, China

摘要

摘要: 在半连续反应器中,以棕榈酸甲酯为植物油脂模型化合物,进行了加氢脱氧制取高品质生物柴油燃料的研究。采用浸渍法制备了HY、SiO₂、γ-Al₂O₃及SAPO-11四种载体负载的Ni催化剂,采用XRD、NH₃-TPD、H₂-TPR、BET、SEM等技术进行催化剂表征。结果表明,Ni/SAPO-11催化剂由于SAPO-11表面呈现的弱酸和中强酸性质,在保持较高的加氢脱氧反应性的同时,抑制了裂解反应的发生,具有较好的催化性能。进一步对SAPO-11上不同的Ni负载量、反应温度、反应压力等进行了研究,发现当Ni负载量为7%,反应温度为220℃,压力为2MPa时,催化剂具有较高的催化性能,棕榈酸甲酯的转化率达到了99.8%,C_9~16烷烃的总选择性为92.71%。
- 植物油脂 /
- 棕榈酸甲酯 /
- 加氢脱氧 /
- Ni基催化剂 /
- 第二代生物柴油
Abstract: A series of Ni catalysts supported on HY, SiO₂, γ-Al₂O₃ and SAPO-11 were prepared by incipient-wetness impregnation and characterized by XRD, NH₃-TPD, H₂-TPR, BET and SEM techniques. Their catalytic performance in hydrodeoxygenation (HDO) of vegetable oil to produce the second-generation biodiesel was evaluated in a semi-batch reactor by using methyl palmitate as a model compound. Owning to the weak and medium acidic properties of SAPO-11, the Ni/SAPO-11 catalyst exhibits high activity in the HDO of methyl palmitate and capability of inhibiting the feedstock and long-chain alkanes from being cracked. The effect of Ni loading, reaction temperature and pressure on the HDO behavior over Ni/SAPO-11 catalyst was considered. Under 220℃ and 2 MPa, Ni/SAPO-11 catalyst with a Ni loading of 7% performs best in HDO; the conversion of methyl palmitate and the selectivity towards C_9~16 alkanes reach 99.8% and 92.71%, respectively.
- vegetable oil /
- methyl palmitate /
- hydrodeoxygenation /
- Ni catalysts /
- second-generation biodiesel

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