کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6528608 | 1419837 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced CO2 chemisorption at high temperatures via oxygen addition using (Fe, Cu or Ni)-containing sodium cobaltates as solid sorbents
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enhanced CO2 chemisorption at high temperatures via oxygen addition using (Fe, Cu or Ni)-containing sodium cobaltates as solid sorbents Enhanced CO2 chemisorption at high temperatures via oxygen addition using (Fe, Cu or Ni)-containing sodium cobaltates as solid sorbents](/preview/png/6528608.png)
چکیده انگلیسی
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 30â¯mol%). Results showed that CO2 chemisorption was improved by iron addition up to 20â¯mol%, but higher amounts of iron did not continue enhancing the chemisorption process. Afterwards, the gas flow was modified adding oxygen (PCO2â¯=â¯0.95 and PO2â¯=â¯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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of CO2 Utilization - Volume 25, May 2018, Pages 147-157
Journal: Journal of CO2 Utilization - Volume 25, May 2018, Pages 147-157
نویسندگان
Elizabeth Vera, J. Francisco Gómez-GarcÃa, Heriberto Pfeiffer,