Journal ArticleDOI
Effect of synthesis pH on the structure of carbon xerogels
Chuan Lin,James A. Ritter +1 more
Reads0
Chats0
TLDR
In this article, mesoporous carbon xerogels were prepared from the sol-gel polymerization of resorcinol with formaldehyde (RF) followed by carbonization.About:
This article is published in Carbon.The article was published on 1997-01-01. It has received 346 citations till now. The article focuses on the topics: Carbonization & Carbon.read more
Citations
More filters
Journal ArticleDOI
Highly porous chemically modified carbon cryogels and their coherent nanocomposites for energy applications
TL;DR: In this article, high-pore carbon cryogels with tunable pore structure and chemical composition were synthesized through controlled hydrolysis and polycondensation reactions using different chemicals as precursors and either NaOH or hexamine (C6N12N4) as catalysts.
Journal ArticleDOI
Fabrication of a Fully Infiltrated Three-Dimensional Solid-State Interpenetrating Electrochemical Cell
TL;DR: In this paper, a three-dimensional solid-state interpenetrating electrochemical cell was synthesized by infiltrating a V 2 O 5 ambigel into a macroporous, polymer-coated carbon anode.
Journal ArticleDOI
Preparation of highly mesoporous carbon membranes via a sol–gel process using resorcinol and formaldehyde
TL;DR: In this article, a pyrolysis of sol-gel derived mesoporous polymer membranes using resorcinol and formaldehyde (RF) was reported, and two series of RF carbon membranes were prepared by changing the rescorcinol to catalyst molar ratio.
Journal ArticleDOI
Graphene oxide as an anti-shrinkage additive for resorcinol–formaldehyde composite aerogels
Abstract: In order to strengthen the nanostructure and suppress the collapse of nanopores of resorcinol-formaldehyde (RF) aerogels during the drying process, graphene oxide (GO) was incorporated into the RF matrix to prepare GO-RF composite aerogels by sol-gel polymerization The influences of GO content on the sol-gel process, structure, and physical properties of RF aerogels were investigated The morphologies of composite aerogels were characterized by scanning electron microscopy and transmission electron microscopy, and it was found that GO was well dispersed in the RF matrix In addition, GO can obviously accelerate the gelation of the RF solution and reduce both the drying shrinkage and aerogel density As the content of GO increased from 0 to 2 wt%, both the linear shrinkage and density of composite aerogels decreased progressively from 283% to 20% and 506 to 195 kg m(-3), respectively, implying that GO is an effective additive for inhibiting the volume shrinkage of aerogels during the drying process
Journal ArticleDOI
Fast microwave-assisted synthesis of tailored mesoporous carbon xerogels
TL;DR: A simple and precise method for determining the gelation point (t(g)) of different pH resorcinol-formaldehyde mixtures is illustrated, based on varying the energy consumed by the microwave device during the synthesis of organic gels, without the need for other more complicated techniques.
References
More filters
Book
CRC Handbook of Chemistry and Physics
TL;DR: CRC handbook of chemistry and physics, CRC Handbook of Chemistry and Physics, CRC handbook as discussed by the authors, CRC Handbook for Chemistry and Physiology, CRC Handbook for Physics,
Journal ArticleDOI
Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity (Recommendations 1984)
TL;DR: Mise au point comportant des definitions generales et la terminologie, la methodologie utilisee, les procedes experimentaux, les interpretations des donnees d'adsorption, les determinations de l'aire superficielle, and les donnes sur la mesoporosite et la microporosite.
Sol-gel science
TL;DR: In this article, the authors present and understand the sol-gel processing sequence from beginning to end, including discussions on the chemistry of hydrolysis and condensation of metal-organics and inorganic salts, the growth of polymeric or particulate species in sols, gelation, aging of gels, drying, structure of Gels, and sintering.
Journal ArticleDOI
Organic aerogels from the polycondensation of resorcinol with formaldehyde
TL;DR: In this paper, the polycondensation of resorcinol with formaldehyde under alkaline conditions results in the formation of surface functionalized polymer "clusters" which are processed under supercritical conditions to obtain low density, organic aerogels.