Tannin-based xerogels with distinctive porous structures

被引：57

作者：

Amaral-Labat, G. ^{[1
,2
]}

Grishechko, L. I. ^{[1
,2
,3
]}

Fierro, V. ^{[2
]}

Kuznetsov, B. N. ^{[3
]}

Pizzi, A. ^{[1
,4
,5
]}

Celzard, A. ^{[1
,2
]}

机构：

[1] Univ Lorraine, ENSTIB, CS 60036, F-88026 Epinal, France

[2] Univ Lorraine, Inst Jean Lamour, ENSTIB, UMR,CNRS 7198,CS 60036, F-88026 Epinal, France

[3] SB RAS, Inst Chem & Chem Technol, Krasnoyarsk 660049, Russia

[4] ENSTIB, LERMAB, EA 4370, CS 60036, F-88026 Epinal, France

[5] King Abdulaziz Univ, Jeddah 21413, Saudi Arabia

来源：

BIOMASS & BIOENERGY | 2013年 / 56卷

关键词：

Xerogels; Tannin; Surfactant; Porous structure; Gel point; CARBON AEROGEL ELECTRODES; TEXTURAL PROPERTIES; ORGANIC AEROGELS; FORMALDEHYDE; RESORCINOL; FOAMS; SUPERCAPACITORS; CRYOGELS; GELS; PERFORMANCES;

D O I：

10.1016/j.biombioe.2013.06.001

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Highly porous organic materials have been obtained from the gelation of a tannin-based resin at different pHs in the presence of F-127 Pluronic (R) surfactant. After subcritical drying in ambient conditions, and without the need of any solvent exchange step, the resultant xerogels had bulk densities typical of most organic aerogels. Their porous structures revealed unique features, depending on the initial pH, such as the possibility of getting either purely macroporous materials with narrow pore size distributions, or bimodal textures having a significant amount of mesoporosity. Correlations between porous texture and gelation time were clearly evidenced. On top of being easy to prepare, these xerogels are based on a cheap, renewable and abundant resource making them valuable precursors of porous carbon materials for a broad range of applications. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：437 / 445

页数：9

共 60 条

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