Biogas reforming for hydrogen-rich syngas production over a Ni-K/Al2O3 catalyst using a temperature-controlled plasma reactor

卷:48

Article

关键词: PROMOTED NI/AL2O3 CATALYSTS;    NI-BASED CATALYSTS;    DISCHARGE PLASMA;    NI/GAMMA-AL2O3 CATALYSTS;    COKE RESISTANCE;    SYNTHESIS GAS;    METHANE;    CO2;    CH4;    DECOMPOSITION;   

DOI  :  10.1016/j.ijhydene.2022.06.135

来源: SCIE

【 摘 要 】

Plasma-enhanced catalytic biogas reforming for hydrogen-rich syngas production over a Ni-K/Al2O3 catalyst was investigated using a tabular dielectric barrier discharge non-thermal plasma reactor. To better understand the plasma catalysis synergy at elevated tempera-tures, we compared different reaction modes: plasma catalysis, plasma alone, and catal-ysis alone in a reaction temperature range of 160-400 degrees C. The combination of Ni-K/Al2O3 and plasma produced synergistic effects. Notably, the plasma-catalytic synergy was temperature-dependent and varied at different reaction temperatures. Using plasma catalysis, the maximum conversion of CH4 and CO2 (31.6% and 22.8%, respectively) was attained over Ni-K/Al2O3 at 160 degrees C, while increasing the reaction temperature to 340 degrees C noticeably enhanced the H2/CO ratio to 2.71. Moreover, compared to plasma-catalytic biogas reforming at 160 degrees C, increasing the reaction temperature to 400 degrees C suppressed biogas conversion with dramatically reduced coke formation on the Ni-K/Al2O3 surface from 6.81 wt% to 3.37 wt%.(c) 2022 The Author(s). Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC. This is an open access article under the CC BY license (http://creativecommons.org/ licenses/by/4.0/).

【 授权许可】

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