Microporous carbon membranes from sulfonated poly(phthalazinone ether sulfone ketone): Preparation, characterization, and gas permeation
Microporous carbon membranes from sulfonated poly(phthalazinone ether sulfone ketone): Preparation, characterization, and gas permeation
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DOI：
10.1002/app.34261
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发表时间：
2011-10
影响因子：
3
通讯作者：
Bing Zhang;Y. Wu;Tonghua Wang;J. Qiu;Shou-hai Zhang
中科院分区：
文献类型：
--
作者：
Bing Zhang;Y. Wu;Tonghua Wang;J. Qiu;Shou-hai Zhang
以磺化聚芳醚砜酮（SPPESK）为原料，通过稳定化和热解工艺制备了微孔炭膜（MCM）。研究了SPPESK的磺化度（SD）和稳定化温度对MCM结构和气体渗透的影响。采用热重-质谱联用技术研究了SPPESK的热分解行为。用傅里叶变换红外光谱法检测了热处理过程中膜表面官能团的变化。采用X射线衍射、拉曼光谱、氮气吸附和纯气体渗透实验（包括H2、CO2、O2和N2）对MCM进行了表征。结果表明，在250-450 ℃范围内，SPPESK中磺酸基团的脱除导致了一个失重阶段。随着SD从59%增加到75%，MCM的比表面积、最大孔容和气体渗透率增加，但选择性降低。同样，MCM的透气性也随着稳定温度从350 ℃升高到400 ℃而增加，但选择性降低。V C 2011
Microporous carbon membranes (MCM) were prepared from sulfonated poly(phthalazinone ether sulfone ketone) (SPPESK) through stabilization and pyrol- ysis processes. The effects of sulfonation degree (SD) of SPPESK and the stabilization temperature on the structure and gas permeation of MCM were investigated. The ther- mal decomposition behavior of SPPESK was studied by thermogravimetric analysis-mass spectrometry. The evolu- tion of functional groups on membrane surface was detected by Fourier transform infrared spectroscopy dur- ing heat treatment. The resultant MCM was characterized by X-ray diffraction, Raman spectroscopy, nitrogen adsorption technique and pure gas permeation test (including the gases of H2 ,C O 2 ,O 2, and N2), respectively. The results have shown that the removal of sulfonic acid groups in SPPESK leads to a weight loss stage in the tem- perature range of 250-450 � C. The surface area, maximum pore volume, and gas permeability of MCM increase with the SD increasing from 59 to 75%, together with the reduc- tion of selectivity. Similarly, the gas permeability of MCM also increases with elevating the stabilization temperature from 350 to 400 � C at the loss of selectivity. V C 2011 Wiley