Synergistic effects of surface acidity and alkalinity of Ni/γ-Al2O3 catalysts in fats and oils hydrodeoxygenation product distribution
发布时间：2024-11-19
点击次数：
- 影响因子：
- 5.9
- DOI码：
- 10.1016/j.indcrop.2024.118227
- 所属单位：
- 环境与资源学院
- 教研室：
- 化学工程系
- 发表刊物：
- Industrial Crops & Products
- 项目来源：
- 重庆市教育委员会；重庆市自然科学基金面上项目
- 关键字：
- Hydrodeoxygenation; Biodiesel; Oxygen-containing compounds; Product distribution; Fats and oil
- 摘要：
- The deep utilization of green and renewable chemicals has laid the foundation for sustainable development.Recombining and modifying the long carbon chain structure and oxygen-containing functional groups in fats andoils can prepare important chemical products, such as high-quality second-generation biodiesel and oxygencontaining compounds (fatty alcohols, fatty acids, and esters). To improve the hydrodeoxygenation (HDO)performances of Ni-based catalysts, the effect of surface composition was studied in detail. Acid-base centers ofNi/γ-Al2O3 catalysts were finely regulated by adding metal oxides (ZrO2, CeO2, La2O3, and MgO). It was foundthat enhancing the basicity of the studied catalyst was conducive to the methyl laurate conversion, but was notconducive to the HDO of oxygen-containing intermediates. In other words, the strong basicity would promote thecondensation reaction of oxygen-containing intermediates over Ni-based catalyst. Among the studied catalysts,Ni/La2O3/γ-Al2O3 catalyst showed the highest methyl laurate conversion (73%) and oxygen-containing productselectivity (64%) at 400 ◦C, LHSV = 1.5 h− 1, H2/oil = 500 Nm3/m3, and PH2 = 2.0 MPa over the Ni/La2O3/γ-Al2O3 catalyst. The acidity was favorable to improve the conversion of oils and the yield of alkane products,and the basicity was favorable to obtain oxygen-containing compounds over the corresponding catalysts.
- 第一作者：
- Shuang Chen
- 合写作者：
- Meijun Leng,Zhengjiang Liao,Jia Zeng,Hongmei Xie
- 论文类型：
- 源刊论文
- 通讯作者：
- Guilin Zhou
- 学科门类：
- 工学
- 文献类型：
- Journal Article
- 卷号：
- 211
- 页面范围：
- 118227
- 是否译文：
- 否
- 发表时间：
- 2024-03-01
- 收录刊物：
- SCI