DOI: 10.1016/j.jcou.2018.03.019
Scopus记录号: 2-s2.0-85044537098
论文题名: Enhanced CO2 chemisorption at high temperatures via oxygen addition using (Fe, Cu or Ni)-containing sodium cobaltates as solid sorbents
作者: Vera E. ; Gómez-García J.F. ; Pfeiffer H.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 25 起始页码: 147
结束页码: 157
语种: 英语
英文关键词: Alkaline ceramic
; CO2 chemisorption
; Cyclability
; Sodium cobaltate
Scopus关键词: Alkalinity
; Carbon dioxide
; Ceramic materials
; Chemisorption
; Copper
; Efficiency
; Flow of gases
; Iron
; Nickel
; Oxygen
; Sodium
; Sodium compounds
; Alkaline ceramic
; Cobaltates
; Cyclability
; High temperature
; Iron concentrations
; N2 adsorption
; Oxygen addition
; Solid sorbents
; Iron compounds
英文摘要: Sodium cobaltates containing Fe, Cu or Ni were synthesized, characterized and evaluated for CO2 capture at high temperatures. Initially, NaCoO2 and metal-containing samples were characterized by XRD, XPS, SEM and N2 adsorption-desorption, where it was probed that Fe, Cu and Ni were partially incorporated into the NaCoO2 structure. All these ceramics were able to trap CO2, but only Fe-containing sample presented an important CO2 chemisorption improvement in comparison to the pristine NaCoO2 sample. Based on these results, a second set of samples was prepared and characterized, varying the iron concentration (10, 20 and 30 mol%). Results showed that CO2 chemisorption was improved by iron addition up to 20 mol%, but higher amounts of iron did not continue enhancing the chemisorption process. Afterwards, the gas flow was modified adding oxygen (PCO2 = 0.95 and PO2 = 0.05), resulting in higher CO2 chemisorption efficiencies and kinetics. These analyses were complemented by CO2 cyclic experiments, where different gas flows were used, analyzing thermal stability and efficiency evolution. © 2018 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111904
Appears in Collections: 气候减缓与适应
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作者单位: Laboratorio de Fisicoquímica y Reactividad de Superficies (LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Cd. Universitaria Del. Coyoacán, Circuito exterior s/n, Ciudad de México, C.P. 04510, Mexico
Recommended Citation:
Vera E.,Gómez-García J.F.,Pfeiffer H.. Enhanced CO2 chemisorption at high temperatures via oxygen addition using (Fe, Cu or Ni)-containing sodium cobaltates as solid sorbents[J]. Journal of CO2 Utilization,2018-01-01,25