Thermodynamic Study of Selected Cyclohexanediamines–Sorbents of Carbon Dioxide

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F24%3A43929442" target="_blank" >RIV/60461373:22340/24:43929442 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1021/acs.energyfuels.4c01593" target="_blank" >https://doi.org/10.1021/acs.energyfuels.4c01593</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.energyfuels.4c01593" target="_blank" >10.1021/acs.energyfuels.4c01593</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermodynamic Study of Selected Cyclohexanediamines–Sorbents of Carbon Dioxide

Popis výsledku v původním jazyce

Atmospheric processes, especially those related to the greenhouse effect and gradual climate change, are crucial topics of the 21st century. The most abundant pollutant produced by a full spectrum of human activities is carbon dioxide. Carbon capture and storage/utilization (CCS/CCU) processes can serve not only as a means to reduce the carbon dioxide emissions but also to lower its atmospheric concentration to preindustrial times in the future, not to mention the possibility of direct application of captured carbon dioxide for other processes. Among CCS techniques, direct air capture of carbon dioxide (DAC) is a promising technology, but sorbents with sufficient absorption efficiency and feasible consecutive release are still to be searched for. The traditionally used amines and amino alcohols are not very effective, so alternatives are being sought. Recently, cyclohexane-based diamines have been shown to be promising substitutes; moreover, the captured carbon dioxide forms solid reaction products with the sorbents (carbamic acids) that can be easily separated from the process. The easy recovery of the liquid sorbent together with the release of CO2 for further use represents a significant advantage over currently used technologies. Four cyclohexane-based diamines, including the most promising of the previously tested compounds, isophorone diamine, were chosen for a thorough thermodynamic characterization to facilitate the introduction of these compounds for industrial use. A phase behavior study was performed to determine the temperature range of their applicability. Combustion enthalpies were measured with a bomb calorimeter, and heat capacities were measured using a Tian-Calvet calorimeter. Vapor pressures were studied by means of a static method and temperature-dependent enthalpies of vaporization were derived.

Název v anglickém jazyce

Thermodynamic Study of Selected Cyclohexanediamines–Sorbents of Carbon Dioxide

Popis výsledku anglicky

Atmospheric processes, especially those related to the greenhouse effect and gradual climate change, are crucial topics of the 21st century. The most abundant pollutant produced by a full spectrum of human activities is carbon dioxide. Carbon capture and storage/utilization (CCS/CCU) processes can serve not only as a means to reduce the carbon dioxide emissions but also to lower its atmospheric concentration to preindustrial times in the future, not to mention the possibility of direct application of captured carbon dioxide for other processes. Among CCS techniques, direct air capture of carbon dioxide (DAC) is a promising technology, but sorbents with sufficient absorption efficiency and feasible consecutive release are still to be searched for. The traditionally used amines and amino alcohols are not very effective, so alternatives are being sought. Recently, cyclohexane-based diamines have been shown to be promising substitutes; moreover, the captured carbon dioxide forms solid reaction products with the sorbents (carbamic acids) that can be easily separated from the process. The easy recovery of the liquid sorbent together with the release of CO2 for further use represents a significant advantage over currently used technologies. Four cyclohexane-based diamines, including the most promising of the previously tested compounds, isophorone diamine, were chosen for a thorough thermodynamic characterization to facilitate the introduction of these compounds for industrial use. A phase behavior study was performed to determine the temperature range of their applicability. Combustion enthalpies were measured with a bomb calorimeter, and heat capacities were measured using a Tian-Calvet calorimeter. Vapor pressures were studied by means of a static method and temperature-dependent enthalpies of vaporization were derived.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GM23-05476M" target="_blank" >GM23-05476M: Vývoj ab initio modelování pro neuspořádané molekulární polovodiče</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

ENERGY &amp; FUELS

ISSN

0887-0624

e-ISSN

1520-5029

Svazek periodika

38

Číslo periodika v rámci svazku

16

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

15446-15459

Kód UT WoS článku

001277889100001

EID výsledku v databázi Scopus

2-s2.0-85199577185