Environmental Benign Synthesis of Lithium Silicates and Mg-Al Layered Double Hydroxide from Vermiculite Mineral for CO2 Capture
Environmental Benign Synthesis of Lithium Silicates and Mg-Al Layered Double Hydroxide from Vermiculite Mineral for CO2 Capture
复制标题
蛭石矿物环保合成硅酸锂和镁铝层状双氢氧化物用于二氧化碳捕集
DOI：
10.3390/catal7040105
复制
发表时间：
2017-04
期刊：
影响因子：
3.9
通讯作者：
Wang Qiang
中科院分区：
文献类型：
--
作者：
Zhang Yu;Zhou Tuantuan;Louis Benoit;Yu Feng;Dan Jianming;Wang Qiang
本研究采用一种全新的环境友好合成路线，以蛭石为原料制备了Mg-Al层状双氢氧化物（LDH）和Li 4SiO 4两种中温高温CO2吸收剂。以蛭石为原料，采用酸浸法制备SiO2，并利用酸浸废液合成Li 4SiO 4和Mg-Al LDH。因此，在整个过程中没有产生废物。采用XRD、SEM和BET分析对Li 4SiO 4和Mg-Al LDH吸附剂进行了仔细表征。综合评价了两种吸附剂的CO2捕集性能。考察了Li/Si比、煅烧温度、煅烧时间和吸附温度对Li 4SiO 4吸附CO2容量的影响，以及吸附温度对LDH吸附CO2容量的影响。确定了蛭石的最佳浸取酸浓度，并对Li 4SiO 4和Mg-Al LDH吸附剂的CO2吸附/解吸循环性能进行了研究。总之，这为从廉价原料中获得两种CO2吸收剂提供了一种独特的环境友好的方案，这一想法适用于其他矿物的高效利用。
This research introduces a completely new environmental benign synthesis route for obtaining two kinds of inter-mediate and high temperature CO2 sorbents, Mg-Al layered double hydroxide (LDH) and Li4SiO4, from vermiculite. The mineral vermiculite was leached with acid, from which the obtained SiO2 was used for the synthesis of Li4SiO4 and the leaching waste water was used for the synthesis of Mg-Al LDH. Therefore, no waste was produced during the whole process. Both Li4SiO4 and Mg-Al LDH sorbents were carefully characterized using XRD, SEM, and BET analyses. The CO2 capturing performance of these two sorbents was comprehensively evaluated. The influence of the Li/Si ratio, calcination temperature, calcination time, and sorption temperature on the CO2 sorption capacity of Li4SiO4, and the sorption temperature on the CO2 sorption capacity of LDH, were investigated. The optimal leaching acid concentration for vermiculite and the CO2 sorption/desorption cycling performance of both the Li4SiO4 and Mg-Al LDH sorbents were determined. In sum, this demonstrated a unique and environment-friendly scheme for obtaining two CO2 sorbents from cheap raw materials, and this idea is applicable to the efficient utilization of other minerals.
登录
查看更多内容
二钛酸钾具有意想不到的高度可逆拓扑 CO2 吸附/解吸能力
影响因子：
11.9
作者：
Zheng Qianwen;Huang Liang;Zhang Yu;Wang Junya;Zhao Chen Zi;Zhang Qiang;Zheng Weijie;Cao Dapeng;O'Hare Dermot;Wang Qiang
通讯作者：
Wang Qiang
提高纳米稻壳灰中 Li4SiO4 基吸附剂的反应活性，用于高温 CO2 捕获
影响因子：
10.4
作者：
Guo, Xin;Li, Yimin;Han, Dongtai;Chao, Yang
通讯作者：
Chao, Yang
影响因子：
11.2
作者：
Shiyi Chen;Wenguo Xiang;Dong Wang;Zhipeng Xue
通讯作者：
Shiyi Chen;Wenguo Xiang;Dong Wang;Zhipeng Xue
影响因子：
7.2
作者：
Qi Zhang;Chen Shen;Sai Zhang;Yong-qiang Wu
通讯作者：
Qi Zhang;Chen Shen;Sai Zhang;Yong-qiang Wu
影响因子：
5.3
作者：
Qiang Wang;Zhi-ming Wu;H. Tay;Luwei Chen;Yan Liu;Jie Chang;Z. Zhong;J. Luo;A. Borgna
通讯作者：
Qiang Wang;Zhi-ming Wu;H. Tay;Luwei Chen;Yan Liu;Jie Chang;Z. Zhong;J. Luo;A. Borgna