Waste Photovoltaic Panels for Ultrapure Silicon and Hydrogen through the Low-Temperature Magnesium Silicide.

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Waste Photovoltaic Panels for Ultrapure Silicon and Hydrogen through the Low-Temperature Magnesium Silicide.

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Waste Photovoltaic Panels for Ultrapure Silicon and Hydrogen through the Low-Temperature Magnesium Silicide.

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/GA15-14228S" target="_blank" >GA15-14228S: Kombinované sorpční systémy pro úschovu energie</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

Industrial and Engineering Chemistry Research

ISSN

0888-5885

e-ISSN

—

Svazek periodika

56

Číslo periodika v rámci svazku

45

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

12863-12869

Kód UT WoS článku

000415785500003

EID výsledku v databázi Scopus

2-s2.0-85034224326