Effect of Additives on Decomposition of Sodium Carbonate: Precombustion CO2 Capture Sorbent Regeneration

被引：27
|
作者：
Siriwardane, Ranjani V. [1 ]
Poston, James A. [1 ]
Robinson, Clark [1 ,2 ]
Simonyi, Thomas [1 ,2 ]
机构：
[1] US DOE, Natl Energy Technol Lab, Morgantown, WV 26507 USA
[2] Parsons Infrastruct & Technol Grp, Pittsburgh, PA 15129 USA
来源：
ENERGY & FUELS | 2011年 / 25卷 / 03期
关键词：
RAY PHOTOELECTRON-SPECTROSCOPY; WARM GAS TEMPERATURES; THERMAL-DECOMPOSITION; XPS SPECTRA; SULFATES; ZINC;
D O I：
10.1021/ef101486m
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The effect of various additives on the decomposition of sodium carbonate (Na2CO3) was evaluated using temperature-programmed desorption, thermogravimetric analysis, X-ray diffraction, and X-ray photoelectron spectroscopy. Incorporation of additives, CaO and Ca(OH)(2), had a significant effect on lowering the decomposition temperature of Na2CO3, while CaCO3, SiO2, and Al2O3 had no effect. The amount of additive, sweep gas flow rate, and heating rate were also found to play a significant role in altering the decomposition temperature of Na2CO3. The formation of a carbonate-type intermediate in the presence of CaO and Ca(OH)(2) may have promoted the decomposition of Na2CO3.
引用
收藏
页码：1284 / 1293
页数：10
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