文献类型：期刊文献

英文题名：Molten slag etching process at ultrahigh temperatures for synergistic production of porous carbon and upgraded syngas

作者：Zhang, Haigang[1,2];Tong, Yibo[1];Cheng, Yuxiang[1];Shen, Zhongjie[2];Liu, Haifeng[1,2]

机构：[1]Liaoning Petrochem Univ, Inst Low Carbon Energy Sci & Technol, Fushun 113001, Liaoning, Peoples R China;[2]East China Univ Sci & Technol, Natl Energy Coal Gasificat Technol Res & Dev Ctr, Shanghai 200237, Peoples R China

年份：2026

卷号：535

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001734206100001)】；

基金：This study is supported by the National Natural Science Foundation of China (22508157) , LiaoNing Revitalization Talents Program (XLYC2402013) , and Natural Science Foundation of Liaoning Province (2025BSLH248) .

语种：英文

外文关键词：Biomass pyrolysis; Molten slag etching; Joule long-time heating; Porous carbon

摘要：The thermochemical upcycling of biomass into high-value-added products is of highly significance. To address the high costs and complex processes of conventional biomass pyrolysis, this work developed a novel process for preparing high-purity porous carbon via ultrahigh-temperature molten slag etching with Joule long-time heating. Poplar sawdust as feedstock and wheat ash as a natural, low-cost agent were used in a direct electrical heating device. The synergistic approach successfully created a material filled with abundant pores. Results show that ultrahigh significantly increases carbon purity (95.29% at 1500 degrees C), suppresses tar formation to below 3%, and raises syngas selectivity (>90%). Slag and transient heating induced pore-forming, and porous carbon showed excellent H2 storage (max. 2.25 wt% at 77 K/0.1 MPa). Techno-economic analysis reveals that the process is highly cost-effective, with a production cost of less than $2/kg and reduced energy consumption. Post-pyrolysis slag (vitrification >95%) immobilized >99.3% heavy metals for resource reuse. This work provides an ecofriendly, cost-effective biomass valorization pathway.