Steam reforming of toluene as a tar model compound with modified nickel-based catalyst

2022年第16卷第3期

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《能源前沿（英文）》 >> 2022年第16卷第3期 doi: 10.1007/s11708-021-0721-8

Steam reforming of toluene as a tar model compound with modified nickel-based catalyst

. State Key Laboratory of Alternate Electric Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China.. Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China.. Faculty of Agricultural Engineering and Technology, PMAS-Arid Agriculture University, Rawalpindi, Pakistan

录用日期： 2021-02-05 发布日期： 2021-02-05

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摘要

Catalytic steam reforming is a promising route for tar conversion to high energy syngas in the process of biomass gasification. However, the catalyst deactivation caused by the deposition of residual carbon is still a major challenge. In this paper, a modified Ni-based Ni-Co/Al O -CaO (Ni-Co/AC) catalyst and a conventional Ni/Al O (Ni/A) catalyst were prepared and tested for tar catalytic removal in which toluene was selected as the model component. Experiments were conducted to reveal the influences of the reaction temperature and the ratio between steam to carbon on the toluene conversion and the hydrogen yield. The physicochemical properties of the modified Ni-based catalyst were determined by a series of characterization methods. The results indicated that the Ni-Co alloy was determined over the Ni-Co/AC catalyst. The doping of CaO and the presence of Ni-Co alloy promoted the performance of toluene catalytic dissociation over Ni-Co/AC catalyst compared with that over Ni/A catalyst. After testing in steam for 40 h, the carbon conversion over Ni-Co/AC maintained above 86% and its resistance to carbon deposition was superior to Ni/A catalyst.

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catalytic steam reforming ; tar model compound ; Ni-based catalyst ; carbon resistance