发明名称 |
MICROPOROUS AND MESOPOROUS CARBON XEROGEL HAVING A CHARACTERISTIC MESOPORE SIZE AND PRECURSORS THEREOF AND ALSO A PROCESS FOR PRODUCING THESE AND THEIR USE |
摘要 |
<p>The invention relates to a microporous and mesoporous carbon xerogel and organic precursors thereof based on a phenol-formaldehyde xerogel. A characteristic parameter common to carbon xerogels is a peak in the mesopore size distribution determined by the BJH method (Barrett-Joyner-Halenda) from nitrogen absorption measurements at 77 K in the range from 3.5 nm to 4 nm. The production process is characterized firstly by the low starting material costs (use of phenol instead of resorcinol) and secondly by very simple and cost-effective processing; convective drying without solvent exchange instead of supercritical drying or freeze drying. The carbon xerogels and their organic phenol-formaldehyde xerogel precursors have densities of corresponding to a porosity of up to 89%, and the xerogels can also have a relevant mesopore volume. The carbon xerogels obtained from the phenol-formaldehyde xerogels are also microporous.</p> |
申请公布号 |
EP2293870(A1) |
申请公布日期 |
2011.03.16 |
申请号 |
EP20090772478 |
申请日期 |
2009.07.01 |
申请人 |
EVONIK CARBON BLACK GMBH |
发明人 |
SCHERDEL, CHRISTIAN;REICHENAUER, GUDRUN |
分类号 |
B01J13/00;C01B31/08;C04B38/00;C08J9/28 |
主分类号 |
B01J13/00 |
代理机构 |
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代理人 |
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地址 |
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