

Carbon Aerogels: a study with different models of the effect resorcinol/catalyst at different ratios after pyrolysis and the effect on textural properties
Rafael Alberto Fonseca-Correa (1)




(1) Facultad de Ciencias, Departamento de Química, Grupo de Investigación en Sólidos Porosos y Calorimetría, Universidad de los Andes, Bogotá, 11001000, Colombia
(2) Facultad de Ingeniería, Grupo DestaCar, Universidad de la Guajira, Guajira, 440001, Colombia
(3) Facultad de Ciencias, Departamento de Química, Universidad Nacional de Colombia, Bogotá, 11001000, Colombia
(4) Facultad de Ciencias, Departamento de Química, Grupo de Investigación en Sólidos Porosos y Calorimetría, Universidad de los Andes, Bogotá, 11001000, Colombia
(*) Corresponding Author
Received: 03 Jun 2017 | Revised: 31 Jul 2017 | Accepted: 05 Aug 2017 | Published: 30 Sep 2017 | Issue Date: September 2017
Abstract
Eight samples of carbon aerogels were prepared at various resorcinol/catalytic (R/C) ratios (ranging from 25 to 1500) and followed the changes in structure after pyrolysis. Isotherms of N2 to 77 K were determined to calculate the textural parameters using Dubinin-Astakhov (DA), Barret Joyner and Halenda (BJH), Non-Local Density Functional Theory (NLDFT) and Quenched Solid Density Functional Theory (QSDFT) models. The results generated two series of samples. In series I, a single type of pores developed (microporous, at low R/C weight ratio). Series II developed mesoporosity to top gears of R/C (> 400). The specific areas ranged from 64 to 990 m2/g. Additional models were applied to the materials synthesized, which allowed for adjustment to a system of “cylinder-slit” pores by applying the QSDFT kernel, with an error percentage ranging from 0.03 to 0.74.
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DOI: 10.5155/eurjchem.8.3.279-287.1593
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Funding information
Grant Basic Sciences by the University of the Andes through the Faculty of Science and the Vice-rectory of Research; and the Bank of the Republic of Colombia for their funding and the Convention 3580.
Citations
[1]. Xu Han, Mei Wang, My Linh Le, Nicholas M. Bedford, Taylor J. Woehl, V. Sara Thoi
Effects of substrate porosity in carbon aerogel supported copper for electrocatalytic carbon dioxide reduction
Electrochimica Acta 297, 545, 2019
DOI: 10.1016/j.electacta.2018.11.203

[2]. Rafael A. Fonseca-Correa, Liliana Giraldo, Juan Carlos Moreno-Piraján
Thermodynamic study of adsorption of nickel ions onto carbon aerogels
Heliyon 5(6), e01789, 2019
DOI: 10.1016/j.heliyon.2019.e01789

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