Study of micropores accessibility in coals and activated carbon using immersion heats with C1-C4 alkanols

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F17%3AA1801NN9" target="_blank" >RIV/61988987:17310/17:A1801NN9 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10973-016-6041-2" target="_blank" >http://dx.doi.org/10.1007/s10973-016-6041-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10973-016-6041-2" target="_blank" >10.1007/s10973-016-6041-2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Study of micropores accessibility in coals and activated carbon using immersion heats with C1-C4 alkanols

Popis výsledku v původním jazyce

Two natural coals and a sample of activated carbon were studied with respect to micropores accessibility for C1-C4 alkanols using immersion calorimetry. From the immersion enthalpies, micropores volumes were calculated according to the Stoeckli-Kraehenbuehl (SK) equation, and obtained values were compared with the surface characteristics of gas adsorption measurements. Validity of the SK equation was found to be problematic for natural coals giving micropores volumes up to 3 times exceeding those of the CO2 adsorption measurements. The possible reason for such discrepancy is discussed. A drop in immersion heats with branched butanols was generally observed, enabling at least semi-quantitative evaluation of the abundance of micropores with diameters below ca. 0.7 nm that are inaccessible for tert-butanol.

Název v anglickém jazyce

Study of micropores accessibility in coals and activated carbon using immersion heats with C1-C4 alkanols

Popis výsledku anglicky

Two natural coals and a sample of activated carbon were studied with respect to micropores accessibility for C1-C4 alkanols using immersion calorimetry. From the immersion enthalpies, micropores volumes were calculated according to the Stoeckli-Kraehenbuehl (SK) equation, and obtained values were compared with the surface characteristics of gas adsorption measurements. Validity of the SK equation was found to be problematic for natural coals giving micropores volumes up to 3 times exceeding those of the CO2 adsorption measurements. The possible reason for such discrepancy is discussed. A drop in immersion heats with branched butanols was generally observed, enabling at least semi-quantitative evaluation of the abundance of micropores with diameters below ca. 0.7 nm that are inaccessible for tert-butanol.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

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)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

J THERM ANAL CALORIM

ISSN

1388-6150

e-ISSN

—

Svazek periodika

128

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

HU - Maďarsko

Počet stran výsledku

8

Strana od-do

1505-1512

Kód UT WoS článku

000401349800025

EID výsledku v databázi Scopus

2-s2.0-85006751004