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Enhanced carbon dioxide adsorption performance and kinetic study of K and Al co-doped Li4SiO4 被引量:1
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作者 Nuonuo Gao Kui Ma +3 位作者 Tong Ding Jinmeng Cai Ye Tian Xingang Li 《Chinese Chemical Letters》 SCIE CAS CSCD 2018年第3期482-484,共3页
Herein, we report the effects of doped K and Al on the carbon dioxide (CO2) adsorption performance of the Li4SiO4-based adsorbents. The CO2 adsorption capacity of 0.8 wt% K and 1.5 wt% AI doped Li4SiO4 is ~2.2 time... Herein, we report the effects of doped K and Al on the carbon dioxide (CO2) adsorption performance of the Li4SiO4-based adsorbents. The CO2 adsorption capacity of 0.8 wt% K and 1.5 wt% AI doped Li4SiO4 is ~2.2 times and ~1.3 times higher than that of the pristine Li4SiO4 at 500 and 600℃, respectively. The kinetic study further indicated that the reaction rates of the lithium diffusion process is greatly improved by K and AI doping, and the lithium diffusion rate of 0.8 wt% K and 1.5 wt% AI doped Li4SiO4 is ~2 times higher than that of the pristine Li4SiO4 at 575-650 ℃. K and AI doping increases the adsorption capacity of Li4SiO4-based adsorbents, and widens its effective adsorption temperature range 展开更多
关键词 Li4SiO K and AI doping CO2 adsorption Kinetic study Adsorption stability
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Concentration and annealing effect on PL properties of sol-gel derived SiO_2-Y_2O_3:Eu^(3+) nanocomposites
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作者 王忆 曾庆光 +3 位作者 胡社军 吴坤彬 蒋俊宏 陈根廷 《Journal of Rare Earths》 SCIE EI CAS CSCD 2010年第2期176-180,共5页
An improved sol-gel method was employed to prepare Eu3+ ions doped SiO2-Y2O3 nanocomposites.Systematic study was carried out on the effect of post-annealing treatment on photoluminescence(PL) properties of the samples... An improved sol-gel method was employed to prepare Eu3+ ions doped SiO2-Y2O3 nanocomposites.Systematic study was carried out on the effect of post-annealing treatment on photoluminescence(PL) properties of the samples under various europium ions doping concentrations.X-ray diffraction(XRD) patterns indicated that the samples showed an amorphous matrix structure,and the scanning electron microscopy(SEM) pictures showed that the samples presented a nano size(from 21 to 42 nm) granular-stack structure after hi... 展开更多
关键词 Eu3+doped sio2-Y2O3 glass photoluminescence(PL) NANOCOMPOSITES rare earths
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