Waste Photovoltaic Panels for Ultrapure Silicon and Hydrogen through the Low-Temperature Magnesium Silicide.
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F17%3A00484211" target="_blank" >RIV/67985858:_____/17:00484211 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1021/acs.iecr.7b01156" target="_blank" >http://dx.doi.org/10.1021/acs.iecr.7b01156</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.iecr.7b01156" target="_blank" >10.1021/acs.iecr.7b01156</a>
Alternative languages
Result language
angličtina
Original language name
Waste Photovoltaic Panels for Ultrapure Silicon and Hydrogen through the Low-Temperature Magnesium Silicide.
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20402 - Chemical process engineering
Result continuities
Project
<a href="/en/project/GA15-14228S" target="_blank" >GA15-14228S: Combined sorption modes for energy storage</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Industrial and Engineering Chemistry Research
ISSN
0888-5885
e-ISSN
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Volume of the periodical
56
Issue of the periodical within the volume
45
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
12863-12869
UT code for WoS article
000415785500003
EID of the result in the Scopus database
2-s2.0-85034224326