Total Hydrogenation of Furfural under Mild Conditions over a Durable Ni/TiO(2)-SiO(2) Catalyst with Amorphous TiO(2) Species.
Total Hydrogenation of Furfural under Mild Conditions over a Durable Ni/TiO(2)-SiO(2) Catalyst with Amorphous TiO(2) Species.
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温和条件下采用无定形 TiO2 物质的耐用 Ni/TiO2·SiO2 催化剂上糠醛的全加氢
DOI：
10.1021/acsomega.0c04736
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发表时间：
2020-11-24
期刊：
影响因子：
4.1
通讯作者：
Wu P
中科院分区：
文献类型：
--
作者：
Xu J;Cui Q;Xue T;Guan Y;Wu P
利用廉价的过渡金属在连续流中实现糠醛一步加氢制四氢糠醇仍是一个巨大的挑战。本文报道了在具有长期稳定性的TiO 2-SiO2复合材料上负载的Ni（约5 nm）纳米颗粒对FAL的完全氢化。TiO 2-SiO2复合材料包含通过乙酰丙酮辅助的钛酸四丁酯的受控水解接枝到二氧化硅气凝胶上的无定形TiOx。采用Brunauer-Emmett-Teller、X射线衍射、透射电子显微镜、H2程序升温还原和H2程序升温脱附等技术对催化剂进行了表征。从TiO 2含量、Ni负载量、液时空速等方面系统考察了催化剂的加氢性能。Ni纳米颗粒与非晶TiOx接触时，与FAL中C=O键的相互作用增强，氢解离和脱附能力增强，有利于整个加氢过程。
One-step total hydrogenation of furfural (FAL) toward tetrahydrofurfuryl alcohol in continuous flow using cheap transition metals still remains a great challenge. We herein reported the total hydrogenation of FAL over Ni (∼5 nm) nanoparticles loaded on TiO2–SiO2 composites with long-term stability. The TiO2–SiO2 composites comprise amorphous TiOx which was grafted on the silica aerogel by acetyl acetone-aided controlled hydrolysis of tetrabutyl titanate. The catalysts were characterized by several techniques including Brunauer–Emmett–Teller, X-ray diffraction, transmission electron microscopy, H2-temperature-programmed reduction, and H2-temperature-programmed desorption. The hydrogenation performances were systematically explored in terms of TiO2 content, Ni loading, liquid hour space velocity, and so forth. Ni nanoparticles in contact with amorphous TiOx showed strengthened interaction with the C=O bond of FAL as well as enhanced hydrogen dissociation and desorption ability, hence benefiting the overall hydrogenation process.
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影响因子：
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作者：
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影响因子：
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影响因子：
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