排序方式: 共有2条查询结果,搜索用时 0 毫秒
1
1.
Yang Wang Qiubing Dong Haifei Cao Dr. Wei Ji Prof. Dr. Jingui Duan Prof. Dr. Su Jing Prof. Dr. Wanqin Jin 《Chemistry (Weinheim an der Bergstrasse, Germany)》2019,25(37):8790-8796
Absorbents with high breakthrough efficiency and weak host–guest interaction are considered to be promising candidates for an energy-saving process in feasible pressure/volume swing adsorption (PSA/VSA). Herein, two groups of finely designed Fe- and Co-based porous coordination polymers (PCPs) are proposed and validated; these possess hourglass-shaped nanochannels, through the cooperation of T-shaped ligands with shifted methyl groups. Featuring optimal nanochannels, high static adsorption, and relatively lower binding energy, one of these polymers, named NTU-30, enables significant C2H6/CH4 and C2H4/CH4 breakthrough efficiency, with approximately 1.0 or 0.6 g CH4 (100 %) harvested from the corresponding mixtures using 1 g of sample at ambient temperature. Furthermore, the positive effect of aromatic sites within NTU-30 is detected and investigated through an in situ IR study. 相似文献
2.
Qiuling Zhou Ling Zhang Chunzhong Li Wei Shao 《中国颗粒学报》2006,4(5):254-256
In a novel method for synthesizing ultrafine aluminum hydroxide particles presented in this paper, the morphology and crystal structure of the particles were investigated by TEM, XRD, etc. The process consisted of two steps: chemical precipitation by acid and carbonation. The product has an hourglass or half-hourglass morphology with a narrow size distribution of 150-200 nm. Major endothermal peak of decomposition was found at 270℃ by differential thermal analysis. X-ray diffraction identified the product as bayerite. Those properties were compared with those of alusminum hydroxide prepared by carbonization only. 相似文献
1