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Waste Photovoltaic Panels for Ultrapure Silicon and Hydrogen through the Low-Temperature Magnesium Silicide.
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SYSNO ASEP 0484211 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Waste Photovoltaic Panels for Ultrapure Silicon and Hydrogen through the Low-Temperature Magnesium Silicide. Tvůrce(i) Dytrych, Pavel (UCHP-M) RID, ORCID, SAI
Bumba, Jakub (UCHP-M) SAI
Kaštánek, František (UCHP-M) RID, SAI, ORCID
Fajgar, Radek (UCHP-M) RID, ORCID, SAI
Koštejn, Martin (UCHP-M) RID, SAI, ORCID
Šolcová, Olga (UCHP-M) RID, ORCID, SAIZdroj.dok. Industrial and Engineering Chemistry Research. - : American Chemical Society - ISSN 0888-5885
Roč. 56, č. 45 (2017), s. 12863-12869Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova magnesium silicide ; waste photovoltaic panels ; ultrapure silicon Vědní obor RIV CI - Průmyslová chemie a chemické inženýrství Obor OECD Chemical process engineering CEP GA15-14228S GA ČR - Grantová agentura ČR Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000415785500003 EID SCOPUS 85034224326 DOI 10.1021/acs.iecr.7b01156 Anotace Circulation technology of waste photovoltaic panels for production of ultrapure silicon and energy in the form of hydrogen storage was designed and verified. Preparation of magnesium silicide from waste photovoltaic panel's silicon and partially oxidized magnesium was thoroughly studied. Work was focused on process optimization, thus, three groups of reactors were tested, namely the continuously evacuated open reactor, pre evacuated batch reactor and semiopened reactors. The influence of reaction temperature was evaluated in the range of 330-630 degrees C for various reaction atmospheres, argon and/or air at pressures of 5, 33, and 100 kPa and vacuum in the range of 5-30 Pa. The effect of nitrogen and oxygen presence in the atmosphere on the resulted reaction and reaction rate was also thoroughly studied. The minimum reaction time guaranteeing the total conversion of silicon for two purifies of used magnesium was also determined. The produced materials were analyzed by dispersive Raman spectroscopy, scanning electron microscopy with energy dispersive X-ray spectroscopy, and X-ray diffraction. Finally, the reactor filling, which significantly influenced the formation of magnesium silicide, was tested and established minimally at 30% of reactors volume. Hydrolysis of obtained magnesium silicide by diluted acid for silicon hydrides' (silanes) production and their subsequent thermal decomposition into the ultrapure silicon and hydrogen were successfully verified. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2018
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