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| 1 | Separation of CO_2/CH_4 and CH_4/N_2 mixtures using MOF-5 and Cu_3(BTC)_2显示文摘In this paper we used MOF-5 and Cu3(BTC)2to separate CO2/CH4 and CH4/N2 mixtures under dynamic conditions. Both materials were synthesized and pelletized, thus allowing for a meaningful characterization in view of process scale-up. The materials were characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM). By performing breakthrough experiments, we found that Cu3(BTC)2separated CO2/CH4 slightly better than MOF-5. Because the crystal structure of Cu3(BTC)2includes unsaturated accessible metal sites formed via dehydration, it predominantly interacted with CO2 molecules and more easily captured them. Conversely, MOF-5 with a suitable pore size separated CH4/N2 more efficiently in our breakthrough test. | Junmin Li Jiangfeng Yang Libo Li Jinping Li | 2014 | Journal of Energy Chemistry2014，23，4： | 7 |
| 2 | Adsorption separation performance of H_2/CH_4 on ETS-4 by concentration pulse chromatography显示文摘To exploit an effective adsorbent to separate hydrogen and methane, microporous titanium silicate molecular sieve NaETS-4 was synthesized and modified by strontium. The adsorption characteristics and diffusion behaviors of the prepared titanosilicate molecular sieve were studied by concentration pulse chromatography. And the effects of ion-exchange and dehydration temperature on adsorbent structure and gas diffusion were also discussed. The results showed that the thermal stability and Henry's Law constants were enhanced and micropore diffusivity decreased after exchanging Na+with Sr2+. With the increase of dehydration temperature, Henry's Law constant and micropore diffusivity of CH4decreased in both NaETS-4 and SrETS-4. While for H2in SrETS-4, the increase of Henry's Law constant and the decrease of diffusion rate can be attributed to the shrinks of pore diameter resulting from the relocation of Sr2+. Correspondingly, the kinetic selectivity of H2/CH4reached 8.91 indicating its potentiality in separating H2and CH4. | Yanna Liu Song Xiao Pu Bai Haoquan Hu Lijun Jin | 2014 | Journal of Energy Chemistry2014，23，2： | 1 |
| 3 | 煤层气制备金刚石的研究与应用显示文摘煤层气与煤伴生作为清洁能源,主要用于工业燃料和发电,而对低浓度煤层气,一般做法是排空,因此煤层气应用领域非常有限。本文介绍了煤层气的开采及提纯技术等研究现状,针对煤层气的分子式结构,提出高值利用煤层气路线,即采用化学气相沉积(CVD)方法,以煤层气为原料制备金刚石。介绍了合成原理与工艺过程,提出了不同浓度的煤层气抽采、发电、提纯、金刚石生产及尾气回收于一体的闭环应用系统。总结获得金刚石制品从工具级、热力学级、光学级到电子级的工艺控制规律,比较分析了CVD工艺方法与装备的优势,概述了气相沉积金刚石在相关领域的应用及研究进展,探讨了气相沉积金刚石作为功能材料的应用优势,为煤层气资源高效利用生产炭材料以及金刚石制备技术革新提供参考。 | 吴玉程 邢学刚 于盛旺 唐宾 树学峰 | 2020 | 新型炭材料2020，35，4： | 0 |
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