摘要
通过高温固相反应法，合成出可在高温400～750℃之间直接吸收CO2的硅酸锂材料，借助热重分析仪研究了K元素的掺杂及CO2的浓度对硅酸锂材料性能的影响。试验结果表明，通过适当K元素的掺杂，能够提高硅酸锂材料吸收CO2的性能，当K元素的掺量x=0．02时，合成的硅酸锂材料在CO2气氛下于700℃保温20min后，吸收量可达39％，吸收容量有明显提高。此外，气氛中CO2的浓度对硅酸锂材料吸收CO2的性能有较大影响。
Lithium silicate as CO2 absorbent at 400-750 ℃ was prepared by high-temperature solid-state reaction. The influence of doping K element and the CO： concentration on the property of lithium silicate as CO2-absorbent was studied with a thermogravimetric analyzer. The experimental results showed that doping of K could improve the CO2-absorption ability of lithium silicate. The amount of CO2 absorption arrived at 39% in CO2 atmosphere at 700 ℃ within 20 rain when x = 0. 02. Moreover, the CO： concentration in gas phase influenced the capacity of CO2-absorption.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2014年第3期620-623,共4页
Bulletin of the Chinese Ceramic Society
基金
安徽省自然科学基金(1208085ME84)
关键词
硅酸锂
吸收
CO2
掺杂
lithium silicate
absorption
CO2
doping
