Functional groups anchoring-induced Ni/MoOx-Ov interface on rice husk char for hydrodeoxygenation of bio-guaiacol to BTX at ambient-pressure

Xudong Fan, Yujian Wu, Yan Sun, Ren Tu, Zhipeng Ren, Kaili Liang, Enchen Jiang, Yongzhi Ren and Xiwei Xu

Renewable Energy, 2022, vol. 200, issue C, 579-591

Abstract: Bio-char is a promising carrier for the catalysts applied in hydrodeoxygenation (HDO) of bio-oil. The impact of bio-char surface microenvironment on the active phase needs to be further explored. In this work, O-containing functional groups were employed in adjusting the surface microenvironment of biomass-derived char with Ni–Mo loading. And the effect of geometric structure and electronic modification of Ni/MoOx-Ov interface on the atmospheric HDO activity of guaiacol over Ni-MoOx/bio-char catalyst was studied. Multiple characterizations revealed that the O-containing functional groups on bio-char carriers not only promoted the dispersion of active metals, but also decreased the particle size, thus resulting in the boosting of Ni/MoOx-Ov interface. Moreover, the intrinsic active sites were sumi-quantitatively analyzed via H2-TPD, and a positive correlation was established between BTX yield and quantity of Ni/MoOx-Ov interface. Furthermore, the effects of hydrothermal parameters for preparing bio-char, HDO conditions (temperature, WHSV and stability) and the metal loadings on the catalytic performance of Ni-MoOx/bio-char catalysts were studied in detail. This work provides a theoretical support to develop cost-effective catalysts with the utilization of biomass waste material.

Keywords: Surface microenvironment of bio-char; HDO; Bimetal interface; BTX; Surface modification (search for similar items in EconPapers)
Date: 2022
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:200:y:2022:i:c:p:579-591

DOI: 10.1016/j.renene.2022.09.080

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