Tailoring water adsorption capacity of APO-Tric

Mal, Suzana (avtor), Ristić, Alenka (avtor), Golobič, Amalija (avtor), Zabukovec Logar, Nataša (avtor)

Microporous triclinic AlPO$_4$-34, known as APO-Tric, serves as an excellent water adsorbent in thermal energy storage, especially for low temperature thermochemical energy storage. Increased water adsorption capacity of thermochemical material usually leads to higher thermal energy storage capacity, thus offering improved performance of the adsorbent. The main disadvantage of aluminophosphate-based TCM materials is their high cost due to the use of expensive organic templates acting as structure directing agents. Using ionic liquids as low cost solvents with associated structure directing role can increase the availability of these water adsorbents for TES applications. Here, a green synthesis of APO-Tric crystals at elevated and ambient pressure by using 1-ethyl-3-methyl imidazolium bromide ionic liquid is presented. Large 200 µm romboid shaped monocrystals were obtained at 200 °C after 6 days. The structure of APO-Tric and the presence of 1,3-dimetylimidazolium cation in the micropores were determined by single crystal XRD at room temperature and 150 K. Water sorption capacity of APO-Tric prepared by ionothermal synthesis at elevated pressure increased in comparison to the material obtained at hydrothermal synthesis most probably due to additional structural defects obtained after calcination. The reuse of exhausted ionic liquid was also confirmed, which adds to the reduction of toxicity and cost production of the aluminophosphate synthesis.

• Jezik: Angleški jezik
• Ključne besede: APO-Tric, water adsorption capacity, thermal energy storage, green ionothermal synthesis, single-crystal structure determination
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FKKT - Fakulteta za kemijo in kemijsko tehnologijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2021
• Št. strani: 12 str.
• Številčenje: Vol. 11, iss. 7, art. 773
• PID: 20.500.12556/RUL-135867
• UDK: 544.5/.6
• ISSN pri članku: 2073-4352
• DOI: 10.3390/cryst11070773
• COBISS.SI-ID: 70093315
• Datum objave v RUL: 30.03.2022

Gradivo je del revije

• Naslov: Crystals
• Skrajšan naslov: Crystals
• Založnik: MDPI
• ISSN: 2073-4352
• COBISS.SI-ID: 36677893

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 02.07.2021

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: elektrokemija, hranilniki toplote, absorpcija, sinteza

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P1-0021
• Naslov: Nanoporozni materiali