Adsorption and desorption of nitrogen at 77 K on micro- and meso- porous materials: Study of transport kinetics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F16%3AA1701GPK" target="_blank" >RIV/61988987:17310/16:A1701GPK - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Adsorption and desorption of nitrogen at 77 K on micro- and meso- porous materials: Study of transport kinetics

Popis výsledku v původním jazyce

The paper presents and discusses the kinetic results of nitrogen adsorption and desorption experiments performed at 77 K on one aluminium-based and three carbon-based materials differing in their microporous and mesoporous nature. The paper focuses on an examination of the transport phenomena during the adsorption/desorption experiments in different-sized pores (micropores and mesopores) identified by both Horvath-Kawazoe and modified Kelvin equations. Of the eight kinetic relations applied to sorption kinetics data, Crank's intraparticle diffusion model is found to be the best-describing. It was observed that rates of transport phenomena significantly change with gradual pore-filling/emptying. Transport proceeds at a minimal rate for a fine micropore (diameter ? 1 nm) filling region and increases steeply upon filling of wider micropores (diameter 1-2 nm). The maximum transport rate is found to be during the filling of pores between 2 and 4 nm in size.

Název v anglickém jazyce

Adsorption and desorption of nitrogen at 77 K on micro- and meso- porous materials: Study of transport kinetics

Popis výsledku anglicky

The paper presents and discusses the kinetic results of nitrogen adsorption and desorption experiments performed at 77 K on one aluminium-based and three carbon-based materials differing in their microporous and mesoporous nature. The paper focuses on an examination of the transport phenomena during the adsorption/desorption experiments in different-sized pores (micropores and mesopores) identified by both Horvath-Kawazoe and modified Kelvin equations. Of the eight kinetic relations applied to sorption kinetics data, Crank's intraparticle diffusion model is found to be the best-describing. It was observed that rates of transport phenomena significantly change with gradual pore-filling/emptying. Transport proceeds at a minimal rate for a fine micropore (diameter ? 1 nm) filling region and increases steeply upon filling of wider micropores (diameter 1-2 nm). The maximum transport rate is found to be during the filling of pores between 2 and 4 nm in size.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

—

Projekt

<a href="/cs/project/LO1208" target="_blank" >LO1208: Teoretické aspekty energetického zpracování odpadů a ochrany prostředí před negativními dopady</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

MICROPOR MESOPOR MAT

ISSN

1387-1811

e-ISSN

—

Svazek periodika

227

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

202-209

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—