合成气
催化作用
化学工程
吸附
纤维素
材料科学
热解
氢
碳纤维
蒸汽重整
制氢
氧气
tar(计算)
光化学
化学
有机化学
复合材料
复合数
计算机科学
工程类
程序设计语言
作者
Jichun Wu,Yuanzhi Li,Chongyang Zhou,Qianqian Hu,Mengqi Zhong,Huamin Cao,Yaqi Hu,Lei Ji
标识
DOI:10.1016/j.apcatb.2023.123388
摘要
Using renewable biomass to produce syngas can form a closed carbon cycle, curbing carbon emissions. However, thermocatalysis suffers from high energy consumption, while the reaction rates of photocatalysis are relatively low. Here, we report the light-driven thermocatalytic steam cellulose reforming to hydrogen-rich syngas on the Ni nanoparticles loaded on Ca2+ doping SiO2 (Ni/Ca1/8-SiO2). It exhibits a high production rate of hydrogen-rich syngas (H2 3059.4 and CO 1612.1 mmol gcatalyst−1 h−1) and good cycling durability. Tar from cellulose pyrolysis, which is inherently challenging to prevent, is substantially decreased by the involvement of H2O. Ca2+ doping dramatically enhances H2O adsorption, resulting in a significant improvement in catalytic performance. The efficient light-driven thermocatalysis derives from the strong absorption over the whole solar spectrum of Ni/Ca1/8-SiO2 on the one hand. On the other hand, noticeable photoactivation effect is observed to promote the oxidation of carbon species by oxygen due to the surface Ni-O bonds being activated upon light illumination.
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