Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/103613
Author(s): Rui Afonso
Luís Gales
Adélio Mendes
Title: Kinetic derivation of common isotherm equations for surface and micropore adsorption
Issue Date: 2016
Abstract: t The Langmuir equation is one of the most successful adsorption isotherm equations, being widely used tofit Type I adsorption isotherms. In this article we show thatthe kinetic approach originally used by Langmuir for 2Dmonolayer surface adsorption can also be used to derive a1D analogue of the equation, applicable in ultramicroporeswith single-file diffusion. It is hoped that such a demonstration helps dispel the idea that the Langmuir isothermequation cannot apply to some micropores as more than amathematical correlation. We furthermore seek to extendthe insight provided by the simple kinetic derivation of theLangmuir equation to other isotherm equations capable ofmodelling Type I isotherms. The same kinetic approach isthus also used to derive the Volmer, Fowler-Guggenheimand Hill-de Boer equations, both for surface (2D adsorbedphase) and micropore adsorption (1D and 3D adsorbedphases). It is hoped that this will help make more intuitively clear that these equations can be used as phenomenological models in some instances of adsorption inmicropores
Subject: Ciências Tecnológicas
Technological sciences
URI: https://hdl.handle.net/10216/103613
Related Information: info:eu-repo/grantAgreement/Comissão de Coordenação e Desenvolvimento Regional do Norte/P2020|Norte2020-Projetos Integrados ICDT/NORTE-01-0145-FEDER-000005/LEPABE-2-ECO-INNOVATION/LEPABE-2-ECO-INNOVATION
info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Projetos Estratégicos/UID/EQU/00511/2013 - POCI-01-0145-FEDER-006939/Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia/LEPABE
info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Projectos de I&DT em Todos os Domínios Científicos/PTDC/EQU-EQU/114944/2009/Desenvolvimento de um sistema autorregenerativo para a remoção de CO2 de sistemas anestésicos em circuito fechado/PTDC/EQU-EQU/114944/2009
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FCUP - Artigo em Revista Científica Internacional
FEUP - Artigo em Revista Científica Internacional

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