碳纳米管
催化作用
合成气
二氧化碳
热解
材料科学
碳纤维
纳米技术
化学工程
甲烷
二氧化碳电化学还原
化学
有机化学
一氧化碳
复合材料
工程类
复合数
作者
Yong Yuan,Enyu Huang,Sooyeon Hwang,Ping Liu,Jingguang G. Chen
标识
DOI:10.1002/anie.202404047
摘要
The urgency to mitigate environmental impacts from anthropogenic CO2 emissions has propelled extensive research efforts on CO2 reduction. The current work reports a novel approach involving transforming CO2 and ethane into carbon nanotubes (CNTs) using earth‐abundant metals (Fe, Co, Ni) at 750 °C. This route facilitates long‐term carbon storage via generating high‐value CNTs and produces valuable syngas with adjustable H2/CO ratios as byproducts. Without CO2, direct pyrolysis of ethane undergoes rapid deactivation. The participation of CO2 not only enhances the durability of the catalyst, but also contributes about 30% of the CNTs production, presenting a viable solution to CO2 challenges. The CNT morphology depends on the catalyst used. Co‐ and Ni‐based catalysts produce CNT with a 20 nm diameter and micrometer length, whereas Fe‐based catalysts yield bamboo‐like structures. This work represents a pioneering effort in utilizing CO2 and ethane for CNT production with potential environmental and economic benefits.
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