Functional groups anchoring-induced Ni/MoOx-Ov interface on rice husk char for hydrodeoxygenation of bio-guaiacol to BTX at ambient-pressure. (November 2022)

• Record Type: Journal Article
• Authors: Fan, Xudong; Wu, Yujian; Sun, Yan; Tu, Ren; Ren, Zhipeng; Liang, Kaili; Jiang, Enchen; Ren, Yongzhi; Xu, Xiwei
• Is Part Of: Renewable energy. Volume 200(2022)
• Page Start: 579
• Page End: 591
• Publication Date: 2022-11
• Subjects: Surface microenvironment of bio-char -- HDO -- Bimetal interface -- BTX -- Surface modification; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.renene.2022.09.080
• Languages: English
• ISSNs: 0960-1481

Abstract

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. Graphical abstract: Synopsis: In this work, the effect of the surface microenvironment of bio-char carriers modified by functional groups on the catalytic activity of bio-char based catalyst loading Ni–Mo to convert bio-guaiacol (biomass tar simulant) to BTX was investigated. Image 1