Organic acid catalyzed carbon aerogels with freeze-drying

2017 2nd International Seminar on Advances in Materials Science and Engineering

Xu, Yuelong^1,2 ; Yan, Meifang^1,2,3 ; Liu, Zhenfa^1,2

Institute of Energy Resources, Hebei Academy of Sciences, Shijiazhuang

050081, China^1

Hebei Engineering Research Center for Water Saving in Industry, Shijiazhuang

050081, China^2

Institute of Process Engineering, Chinese Academy of Sciences, Beijing

100190, China^3

关键词: Acid catalyst;    Carbon aerogels;    Freeze drying;    Freeze drying method;    Phloroglucinol;    Surface area analyzers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/231/1/012113/pdf
DOI  :  10.1088/1757-899X/231/1/012113

来源: IOP

【 摘 要 】

Carbon aerogels (CAs) were synthesized via a sol-gel process by condensation-polymerization of phloroglucinol, resorcinol and formaldehyde using 2,4-dihydroxybenzoic acid as catalyst with freeze-drying. The effects of the freeze-drying method on the texture and pore structure were studied. Meanwhile the structure of carbon aerogels was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and a surface-area analyzer. The results show that the freeze-drying method and acid catalyst were good for the specific surface area of carbon aerogel, up to 765m2g-1, and pore size distribution.