Effect of the Ni-to-CaO Ratio on Integrated CO2 Capture and Direct Methanation

被引：9

作者：

Woo, Jin-Hyeok ^{[1
]}

Jo, Seongbin ^{[2
]}

Kim, Ju-Eon ^{[1
]}

Kim, Tae-Young ^{[3
]}

Son, Han-Dong ^{[1
]}

Ryu, Ho-Jung ^{[4
]}

Hwang, Byungwook ^{[4
]}

Kim, Jae-Chang ^{[1
]}

Lee, Soo-Chool ^{[3
]}

Gilliard-AbdulAziz, Kandis Leslie ^{[2
,5
]}

机构：

[1] Kyungpook Natl Univ, Dept Chem Engn, Daegu 41566, South Korea

[2] Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA

[3] Kyungpook Natl Univ, Res Inst Adv Energy Technol, Daegu 41566, South Korea

[4] Korea Inst Energy Res, Photovolta Lab, Daejeon 34129, South Korea

[5] Univ Calif Riverside, Dept Mat Sci & Engn, Riverside, CA 92521 USA

来源：

CATALYSTS | 2023年 / 13卷 / 08期

基金：

新加坡国家研究基金会;

关键词：

ICCU; direct methanation; Ni/CaO ratio; macroporous structure; Ni dispersion; CONVERSION; SORBENTS; SYSTEM; GAS;

D O I：

10.3390/catal13081174

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Direct methanation in an integrated CO2 capture and utilization system has recently gained considerable attention as a promising approach owing to its simplified process and lower requirement of total thermal energy as compared to conventional CO2 capture and utilization techniques. This study formulated macroporous structured Ni/CaO catal-sorbents by controlling the Ni-to-CaO ratio. The influence of this ratio on the CO2 capture (capacity and kinetics) and direct methanation performances (productivity and kinetics) was evaluated at 500 C-?. CO2 capture combined with direct methanation experiments revealed that 10Ni/CaO exhibited the best CO2 capture capacity, kinetics, and CH4 productivity with the thermal stability of Ni and CaO species.

引用

页数：11

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