Synthesis of Ni-Mg@HC catalyst derived from sugarcane bagasse and its application for producing syngas via CO₂ dry reforming

ABSTRACT

In this paper, sugarcane bagasse was used as the raw material to produce hydrochar (HC) through the hydrothermal carbonization (HTC) process, then Ni and Mg were loaded on HC by the impregnation method. Thus, a serial of Ni-Mg_x@HC core-shell structural catalysts for CO₂ dry reforming were synthesized. In order to evaluate the application of Ni-Mg_x@HC catalyst derived from sugarcane bagasse, the catalytic performance for CO₂ dry reforming were investigated. Experimental results showed that the hydrochar based catalyst (Ni-Mg₁₅@HC) exhibited an excellent activity and stability at 750°C, CH₄ and CO₂ conversions were 63.7% and 76.9%, respectively. XRD, TEM, CO₂-TPD and TG-DTG characteristic proved that the addition of Mg into Ni@HC would promote the active site formation and the adsorption capacity of CO₂. Moreover, the coke deposition was also suppressed in the DRM process. The catalytic performance of Ni-Mg₁₅@HC catalyst demonstrated that it was a practical candidate for the DRM reaction due to its unexpected activity and stability.

KEYWORDS:

• Catalyst
• sugarcane bagasse
• hydrochar
• DRM reaction
• core-shell structure

Acknowledgments

The present work is supported Natural Science Foundation of Hubei Province (Grant No. 2019CFB116), Technology Innovation Special Foundation of Hubei Province (Grant No. 2019ACA157&2019AHB073&2019ZYYD060) and Excellent Young Scientific and Technological Innovation Team of Hubei Provincial Department of Education, China (T201902).

Supplementary Material

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Additional information

Funding

This work was supported by the Natural Science Foundation of Hubei Province [2019CFB116];Excellent Young Scientific and Technological Innovation Team of Hubei Provincial Department of Education [T201902];Technology Innovation Special Foundation of Hubei Province [2019ACA157&2019AHB073&2019ZYYD060].

Notes on contributors

Yan Liang

Yan Liang is a graduate student of Wuhan University of Science and Technology (China). She received her BS in Division of Safety Science and Engineering from Wuhan University of Science and Technology (China) in 2017. Her research interests are CO₂ reforming with CH₄.

Jun han

Jun Han, PhD, is a professor at School of Resource and Environmental Engineering, Wuhan University of Science and Technology (China). He obtained Ph.D, also masters and bachelor's degrees in Thermal Engineering from Huazhong University of Science and Technology. Dr Han’s research interests include waste handling and disposal, energy utilization and other environmental technology. He published 100 previewed research papers in the above research field.

Huaqin Wang

Huaqin Wangis a Ph.D candidate of Wuhan University of Science and Technology (China). She received her BS in Civil engineering at Guilin University of Technology (China). Her research interest is converting CO₂ into other chemical products.

Bo Zhao

Bo Zhao, PhD, is an assistant professor at School of Resource and Environmental Engineering, Wuhan University of Science and Technology (China). He obtained Ph.D, also masters and bachelor's degrees in Thermal Engineering from Huazhong University of Science and Technology. Dr Zhao’s research interests include coal clean utilization, oxygen fuel combustion and CO₂ conversion.

Linbo Qin

Linbo Qin, PhD, is an assistant professor at School of Resource and Environmental Engineering, Wuhan University of Science and Technology (China). He obtained Ph.D, also masters and bachelor's degrees in Chemical Engineering fromWuhan University of Science and Technology. Dr Qin’s research interests include VOC catalytic oxidization, VOC adsorption and waste incineration.

Yu Wang

Yu Wang, PhD, is an assistant professor at School of Resource and Environmental Engineering, Wuhan University of Science and Technology (China). He obtained Ph.D, also masters and bachelor's degrees in Environmental Engineering fromDalian University of Technology. Dr Wang’s research interests include VOC catalytic oxidization, VOC adsorption and other catalysts development.