Catalytic hydrodeoxygenation of guaiacol as a model compound of woody bio-oil over Fe/AC and Ni/γ-Al2O3 catalysts. (August 2021)

• Record Type: Journal Article
• Authors: Tran, Quoc Khanh; Ly, Hoang Vu; Kwon, Byeongwan; Kim, Seung-Soo; Kim, Jinsoo
• Is Part Of: Renewable energy. Volume 173(2021)
• Page Start: 886
• Page End: 895
• Publication Date: 2021-08
• Subjects: Guaiacol -- Hydrodeoxygenation -- Activated carbon -- Fe/AC -- Ni/γ-Al2O3; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.renene.2021.03.138
• Languages: English
• ISSNs: 0960-1481

Abstract

Abstract: In this study, Ni/γ-Al2 O3 and Fe/activated carbon (AC) catalysts were prepared by an incipient impregnation method and then utilized for hydrodeoxygenation (HDO) of guaiacol (GUA). The AC used in the process was derived from bamboo through steam activation. The effects of the calcination temperature, metal loading, and phosphorus addition on the HDO of GUA were systematically investigated. At 300 °C and atmospheric pressure, 91.52% of GUA was successfully transformed into cresol and 1, 2-dimethoxybenzene in liquid phase using 10 wt% of the Fe/AC catalyst, which was calcined at 550 °C. Under the same reaction conditions, utilizing 10 wt% of the Ni/ γ -Al2 O3 catalyst, which was calcined at 450 °C, resulted in 96.88% GUA conversion, producing 13.03% of cresol, 58.98% of 1, 2-dimethoxybenzene, and 27.99% of 3-methyl guaiacol. Additionally, the reaction pathways of the GUA HDO were proposed based on the obtained product distributions. Graphical abstract: Image 1 Highlights: Effect of metal loading and calcination temperature on γ-Al2 O3 and AC support was investigated for guaiacol HDO. 10 wt% Ni/γ-Al2 O3 catalyst calcined at 450 °C resulted in the highest GUA conversion of 96.88%. Phosphorus addition to Ni/γ-Al2 O3 and Fe/AC affected product distributions. Reaction pathways of guaiacol HDO were proposed based on liquid products.