Synergy of metallic Pt and oxygen vacancy sites in Pt-WO3-x catalysts for efficiently promoting vanillin hydrodeoxygenation to methylcyclohexane
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作者
Sun, Mengya; Zhang, Yanfei; Liu, Wang; Zhao, Xinpeng; Luo, Hu; Miao, Gai; Wang, Zhiqiang; Li, Shenggang; Kong, Lingzhao
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刊物名称
GREEN CHEMISTRY
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年、卷、文献号
2022, 24, 1463-9262
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关键词
Sun, Mengya; Zhang, Yanfei; Liu, Wang; Zhao, Xinpeng; Luo, Hu; Miao, Gai; Wang, Zhiqiang; Li, Shenggang; Kong, Lingzhao
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摘要
Pt-WO3-x catalysts showed very high catalytic activity in complete hydrodeoxygenation (HDO) of vanillin, a typical model compound of lignin, affording methylcyclohexane (MCH) in 92.5% yield at 220 degrees C, under 4.0 MPa H-2 and in 2 h in n-hexane as the solvent. By tuning the reduction time and pre-treatment of the WO3 support, the influence of Pt species and oxygen vacancy sites of Pt-WO3-x on vanillin HDO performance was analyzed. The reaction pathway of vanillin HDO over Pt-WO3-x was proposed. Moreover, Pt-WO3-x showed wide applicability to the HDO of other phenols and high catalytic stability.
