| 查看: 548 | 回复: 0 | |||
baixy2010木虫 (著名写手)
|
[交流]
对分离二氧化碳带有最佳吸收热力学与动力学多的孔材料
|
The energy costs associated with the separation and purification of industrial commodities, such as gases, fine chemicals and fresh water, currently represent around 15 per cent of global energy production, and the demand for such commodities is projected to triple by 2050 (ref. 1). The challenge of developing effective separation and purification technologies that have much smaller energy footprints is greater for carbon dioxide (CO2) than for other gases; in addition to its involvement in climate change, CO2 is an impurity in natural gas, biogas (natural gas produced from biomass), syngas (CO/H2, the main source of hydrogen in refineries) and many other gas streams. In the context of porous crystalline materials that can exploit both equilibrium and kinetic selectivity, size selectivity and targeted molecular recognition are attractive characteristics for CO2 separation and capture, as exemplified by zeolites 5A and 13X (ref. 2), as well as metal–organic materials (MOMs)3, 4, 5, 6, 7, 8, 9. Here we report that a crystal engineering7 or reticular chemistry5, 9 strategy that controls pore functionality and size in a series of MOMs with coordinately saturated metal centres and periodically arrayed hexafluorosilicate (SiF62− anions enables a ‘sweet spot’ of kinetics and thermodynamics that offers high volumetric uptake at low CO2 partial pressure (less than 0.15 bar). Most importantly, such MOMs offer an unprecedented CO2 sorption selectivity over N2, H2 and CH4, even in the presence of moisture. These MOMs are therefore relevant to CO2 separation in the context of post-combustion (flue gas, CO2/N2), pre-combustion (shifted synthesis gas stream, CO2/H2) and natural gas upgrading (natural gas clean-up, CO2/CH4).Subject terms  orous materials[ Last edited by baixy2010 on 2013-4-5 at 18:18 ] |
回复此楼» 猜你喜欢
稀土发光分析｜核壳结构｜寿命拟合
已经有6人回复
-
稀土发光分析｜核壳结构｜寿命拟合
已经有0人回复
-
金属材料论文润色/翻译怎么收费?
已经有110人回复
-
稀土发光分析｜核壳结构｜寿命拟合
已经有0人回复
-
26 届青岛大学纺织化学与染整工程硕士（液体纳米分散染料方向）求申博建议
已经有4人回复
-
26 届青岛大学纺织化学与染整工程（液体纳米分散染料）求浙理工纺织 / 材料博导名额
已经有1人回复
-
敢问Acta Pharmaceutica Sinica B with Editor 三周了，能是什么情况？
已经有0人回复
-
求助 CeO2 Fe3O4 Cu2S CoFe2O4 标准卡 Jade 导出的数据
已经有0人回复
-
求助一篇MEMS散热器件文献
已经有0人回复
-
材化专业SCI论文（职称评定）
已经有0人回复
» 本主题相关商家推荐: (我也要在这里推广)
找到一些相关的精华帖子，希望有用哦~
关于吸附动力学和吸附热力学问题
已经有11人回复
- 材料设计--热力学动力学必会篇
已经有192人回复
- 新型材料热力学及动力学研究课件
已经有75人回复
- 反应的起始温度与动力学还是热力学有关
已经有4人回复
- 浙江大学材料热力学与动力学PPT
已经有167人回复
- 求助《材料热力学与动力学》这本书哪一个版本的比较经典？
已经有3人回复
- 【求助】哪位老师知道当今做离子液体的国内外专家都有哪些啊？？
已经有10人回复
- 【求助】热力学和动力学方面问题
已经有13人回复
- 【求助】谁能推荐几本比较基础的关于金属固态下的动力学和热力学的书
已经有13人回复
- 吸附分离环境污染物热力学\动力学的文章能投Environmental Pollution吗
已经有4人回复
点击这里搜索更多相关资源科研从小木虫开始，人人为我，我为人人
100