New insights on the direct activation of isotropic petroleum pitch by alkaline hydroxides

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Title: New insights on the direct activation of isotropic petroleum pitch by alkaline hydroxides
Authors: Vilaplana-Ortego, Eduardo | Lillo-Rodenas, Maria Angeles | Alcañiz-Monge, Juan | Cazorla-Amorós, Diego | Linares-Solano, Angel
Research Group/s: Materiales Carbonosos y Medio Ambiente
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica
Keywords: Isotropic pitch | Chemical activation | Microporosity | Activated carbon
Knowledge Area: Ciencia de los Materiales e Ingeniería Metalúrgica | Química Inorgánica
Date Created: 2009
Issue Date: Feb-2010
Publisher: Elsevier
Citation: VILAPLANA-ORTEGO, E., et al. "New insights on the direct activation of isotropic petroleum pitch by alkaline hydroxides". Fuel Processing Technology. Vol. 91, Issue 2 (Feb. 2010). ISSN 0378-3820, pp. 145-149
Abstract: The paper provides interesting evidences that a low softening point isotropic petroleum pitch can be used as a good carbon precursor for the preparation of activated carbons. The activation is carried out by KOH and/or NaOH and the resulting activated carbons present well developed porosity. Such hydroxide activations can be done directly on the pristine petroleum pitch (P) or on the pitch that has been submitted to an air stabilisation followed by a N2 heat treatment (TAN). In general, KOH activation produces better results than NaOH, both in terms of porosity and yield, the results obtained for the activation of TAN being impressive because of the good porosity developments and high yields reached. The different treatments carried out over the petroleum pitch precursor clearly show that they significantly influence the extent of microporosity development. This is due to different changes occurring in the porous structure of the precursor as a function of the treatment carried out. The efficiency of the activation process increases as the mesophase content of the precursor decreases, as well as the mesophase formation during the activation process is avoided.
Sponsor: MEC (project CTQ2006-08958/PPQ) and Generalitat Valenciana (ARVIV/2007/063) and Prometeo/2009/047.
ISSN: 0378-3820 (Print) | 1873-7188 (Online)
DOI: 10.1016/j.fuproc.2009.08.024
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
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Appears in Collections:INV - MCMA - Artículos de Revistas

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