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Synthesis & Characterization of Micro- and Meso-porous Spherical Carbon Aerogel Particles by Emulsion-Gelation Method

Kamal Mohamed, Seeni Meera and Heinrich, Charlotte and Milow, Barbara (2022) Synthesis & Characterization of Micro- and Meso-porous Spherical Carbon Aerogel Particles by Emulsion-Gelation Method. 6th INTERNATIONAL SEMINAR ON AEROGELS, 2022-09-28 - 2022-09-30, Hamburg, Germany.

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Aerogels are a class of highly porous materials, especially carbon aerogels having high surface area (400-900 m2/g) and ultrafine pore size (˂ 100 nm).1 These porous carbon materials can be applied in electrochemical energy storage, catalysis, adsorption, fuel cells, etc.1 Carbon monolithic aerogels are synthesized conventionally by the sol-gel polymerization of Resorcinol (R) and Formaldehyde (F) in a basic medium followed by supercritical CO2 drying and further carbonization in an inert atmosphere.2 Compared to carbon monoliths, microparticles have attracted several researchers over the years because of their smooth surface, mechanical strength, microstructures, high packing density and easy processability.3 They find an extensive application in various fields such as catalysis, health care, energy, environment, electronics, etc.4 The main objective of this work was to synthesize spherical RF and carbon aerogel particles by using an emulsion-gelation method.5 RF aerogel particles were dried by both supercritical CO2 drying (SCD) and ambient drying (AD) methods. The dried RF particles were carbonized under an Argon atmosphere to form spherical carbon particles in the size range of 150-200 µm. The as prepared carbon particles were characterized using different characterization methods such as gas pycnometry, N2 adsorption, XRD and SEM. The supercritically dried carbon particles have surface areas greater than 1000 m2/g with pores in the sizes of micro- & meso- regions whereas ambient dried carbon microparticles have surface areas of around 800 m2/g with pores predominant in the range of micro- region. The morphologies of the different carbon particles are quite similar to that of their RF particles.5 Further studies are in progress to understand their properties for various applications and also to produce them in large scale.

Item URL in elib:https://elib.dlr.de/188809/
Document Type:Conference or Workshop Item (Poster)
Title:Synthesis & Characterization of Micro- and Meso-porous Spherical Carbon Aerogel Particles by Emulsion-Gelation Method
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Kamal Mohamed, Seeni MeeraUNSPECIFIEDhttps://orcid.org/0000-0002-8812-1362UNSPECIFIED
Heinrich, CharlotteUNSPECIFIEDhttps://orcid.org/0000-0002-8970-9598UNSPECIFIED
Milow, BarbaraUNSPECIFIEDhttps://orcid.org/0000-0002-6350-7728UNSPECIFIED
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Aerogel, Micro-particles, Emulsion-Gelation, Carbon micro-particles, Resorcinol-Formaldehyde
Event Location:Hamburg, Germany
Event Type:international Conference
Event Start Date:28 September 2022
Event End Date:30 September 2022
Organizer:Prof. Irina SMIRNOVA, (Hamburg University of Technology – Harburg, Germany
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Transport System
DLR - Research area:Transport
DLR - Program:V VS - Verkehrssystem
DLR - Research theme (Project):V - Energie und Verkehr (old), V - NGC Fahrzeugstruktur II (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Aerogels and Aerogel Composites
Deposited By: Kamal Mohamed, Seeni Meera
Deposited On:17 Oct 2022 08:21
Last Modified:24 Apr 2024 20:50

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