Provided is an adsorbent adapted to adsorb carbon dioxide by increasing the pressure, and to carry out 10% or more adsorption and adsorption of the adsorbed carbon dioxide by lowering the pressure at atmospheric pressure or higher in a range of 100 to 900 kPa without vacuuming or the like. As a result of using amorphous aluminum silicate with a Si/Al ratio of 0.7 to 1.0 and having a peak in the vicinity of −78 ppm and −87 ppm in a
29
Si solid NMR spectrum, adsorption and desorption of 10 wt % or more can be performed in a range of 100 to 900 kPa, and this can be used as a carbon dioxide adsorbent mainly in the pressure swing adsorption method.
提供了一种吸附剂,适用于通过增加压力吸附
二氧化碳,并在大气压力或更高范围内在100至900 kPa的范围内通过降低压力进行10%或更多的吸附和吸附吸附的
二氧化碳,而无需真空或类似物质。由于使用Si / Al比为0.7至1.0并在a29Si固体NMR光谱中在-78 ppm和-87 ppm附近具有峰值的非晶态铝
硅酸盐,可以在100至900 kPa的范围内执行10重量%或更多的吸附和脱附,这可以主要用作压力摆动吸附法中的
二氧化碳吸附剂。