2D-Layered Ni-MgO-Al2O3 Nanosheets for Integrated Capture and Methanation of CO2

被引：72

作者：

Zhou, Zhongjin ^{[1
,2
]}

Sun, Nannan ^{[1
]}

Wang, Baodeng ^{[3
]}

Han, Zhihua ^{[3
]}

Cao, Shicheng ^{[1
]}

Hu, Deng ^{[1
]}

Zhu, Tianyang ^{[1
]}

Shen, Qun ^{[1
]}

Wei, Wei ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Adv Res Inst, CAS Key Lab Low Carbon Convers Sci & Engn, Shanghai 201210, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Natl Inst Clean & Low Carbon Energy, Shenhua 001, Beijing 102200, Peoples R China

来源：

CHEMSUSCHEM | 2020年 / 13卷 / 02期

关键词：

carbon capture; heterogeneous catalysis; layered double hydroxides; carbon dioxide; methanation; FLUE-GAS CO2; CATALYTIC METHANATION; CARBON CAPTURE; DIOXIDE; CONVERSION; ADSORPTION; STORAGE; HYDROGENATION; GLYCEROL; METHANOL;

D O I：

10.1002/cssc.201902828

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

CO2 capture is an enabling technology for carbon conversion and storage; however, the high costs of the process have hindered its large-scale application so far. Therefore, new approaches for carbon abatement, particularly from diluted sources, are urgently needed. Herein, based on the adsorption and catalysis bifunctionality of 2D-layered Ni-O-Al2O3 nanosheets, a two-step "capture and methanation" process is reported for the removal and utilization of CO2, with no additional energy input for desorption being required. Continuous and nearly 100 % capture of CO2 was demonstrated at low temperatures (<= 250 degrees C) and prolonged cycles. At isothermal conditions, the material could be fully regenerated with the production of methane, showing considerably higher time efficiency than temperature-swing and pressure-swing technologies. This strategy may pave a new way for CO2 reduction, providing a scalable connection between the power grid and the gas grid when H-2 is used.

引用

页码：360 / 368

页数：9

共 53 条

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