Colloidal processing and CO₂ capture performance of sacrificially templated zeolite monoliths

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• 作者：Farid Akhtar ; ^{farid.akhtar@mmk.su.se} ; Linné ; a Andersson ; Neda Keshavarzi ; Lennart Bergströ ; m
• 关键词：Porous ; Zeolite ; Colloidal processing ; Adsorbent ; CO2 capture ; Sacrificial templating
• 刊名：Applied Energy
• 出版年：2012
• 期刊代码：2_03062619
• 类别：pw
• 出版时间：September, 2012
• 卷：97
• 期：Complete
• 页码：289-296
• 文件大小：1859 K

摘要

Sacrificial templating of suspension cast and subsequently thermally treated zeolite monoliths with glassy carbon spheres and fibers yielded zeolite 13X and silicalite-1 monoliths with macroporosities up to 50 vol%. Homogeneous distribution of the macroporosity in hierarchically porous monoliths was obtained by tailoring the surface chemistry of the carbon particles by polyelectrolyte-assisted adsorption of zeolite particles. The effect of amount of kaolin binder and temperature for the thermal treatment on the monoliths strength, surface area and CO₂ uptake was studied by diametral compression tests, electron microscopy, X-ray diffraction and gas adsorption. Cyclic adsorption and regeneration measurements showed that zeolite 13X monoliths display a high CO₂ uptake while the silicalite-1 monoliths could be regenerated with a relatively low energy penalty.