介孔材料
催化作用
溶剂
再生(生物学)
氧化物
材料科学
化学工程
纳米技术
化学
工程类
有机化学
冶金
生物
细胞生物学
作者
Junhua Li,Zhen Chen,Lei Xing,Guoxiong Zhan,Zhoulan Huang,Xinhao Bai,Rong Wang,Yue Peng
摘要
Catalytic solvent regeneration is considered a promising solution to address the high heat duty of amine-based CO2 capture, urgently requiring for acid catalysts with strong activity and durability for practice application. In this work, feasible Zr/Al2O3 catalysts was proposed by incorporating well-distributed zirconia (ZrO2) nanoparticles within mesoporous alumina to construct stable active sites through mesoporous confinement and the strong metal oxide-support interaction. Performance experiments showed that the maximum carbamate decomposition desorption rate using Zr/Al2O3 increased by 178% compared to the catalyst-free case, resulting in approximately 27% lower relative heat duty. Bench-scale testing with continuous CO2 absorption and desorption demonstrated an optimized capture efficiency of 54.2% achievable with pelletized Zr/Al2O3, which was 12.5% higher than the blank case during the 11-h continuous testing. A 4-weeks hydrothermal testing indicated that the catalysts had minimal impact on solvent degradation, confirming the excellent adaptability of Zr/Al2O3 in an alkaline amine-based solvent for CO2 capture.
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