THERMO-CATALYTIC DEGRADATION OF POLYSTYRENE OVER Α-FE2O3

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F21%3A10248331" target="_blank" >RIV/61989100:27710/21:10248331 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.confer.cz/nanocon/2020/3719-thermo-catalytic-degradation-of-polystyrene-over-a-fe2o3" target="_blank" >https://www.confer.cz/nanocon/2020/3719-thermo-catalytic-degradation-of-polystyrene-over-a-fe2o3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/nanocon.2020.3719" target="_blank" >10.37904/nanocon.2020.3719</a>

Jazyk výsledku

angličtina

Název v původním jazyce

THERMO-CATALYTIC DEGRADATION OF POLYSTYRENE OVER Α-FE2O3

Popis výsledku v původním jazyce

Polystyrene (PS) is an important plastic material, which is widely used in packaging, home, construction, electrical appliances, medical equipment etc. The widespread use of PS generates large amounts of PS wastes, which is due to poor recycling rates globally end up in landfills as well as in the oceans. The increasing amounts of wastes polystyrene and other wastes plastics thus represent a serious threat to the environment, and also to human and animal health. Chemical recycling is an environmentally friendly approach that can be applied for the recycling of plastics. For chemical recycling, thermal or thermo-catalytic pyrolysis/degradation can be used. During the degradation process, polymeric materials are converted into their monomers or other valuable compounds. This paper deals with the synthesis of α-Fe2O3 nanoparticles and their use as catalyst in thermo-catalytic degradation of PS in a semi-batch reactor. The aim was to study the influence of synthesis parameters on the catalytic properties of α-Fe2O3 in PS degradation. The α-Fe2O3 catalyst samples were prepared by the chemical precipitation method using FeCl3.6H2O as a precursor salt and NaOH as precipitating agent and by calcining the precipitates at different temperatures. All catalyst samples prepared were characterized by XRD and physisorption of nitrogen. It is shown that by increasing the calcination temperature of precipitates, pure α-Fe2O3 (hematite phase) can be obtained. Furthermore, it is demonstrated that PS degradation using pure hematite as catalyst in comparison with mixed phase or non-catalytic degradation gives higher yields of oil and styrene monomer.

Název v anglickém jazyce

THERMO-CATALYTIC DEGRADATION OF POLYSTYRENE OVER Α-FE2O3

Popis výsledku anglicky

Polystyrene (PS) is an important plastic material, which is widely used in packaging, home, construction, electrical appliances, medical equipment etc. The widespread use of PS generates large amounts of PS wastes, which is due to poor recycling rates globally end up in landfills as well as in the oceans. The increasing amounts of wastes polystyrene and other wastes plastics thus represent a serious threat to the environment, and also to human and animal health. Chemical recycling is an environmentally friendly approach that can be applied for the recycling of plastics. For chemical recycling, thermal or thermo-catalytic pyrolysis/degradation can be used. During the degradation process, polymeric materials are converted into their monomers or other valuable compounds. This paper deals with the synthesis of α-Fe2O3 nanoparticles and their use as catalyst in thermo-catalytic degradation of PS in a semi-batch reactor. The aim was to study the influence of synthesis parameters on the catalytic properties of α-Fe2O3 in PS degradation. The α-Fe2O3 catalyst samples were prepared by the chemical precipitation method using FeCl3.6H2O as a precursor salt and NaOH as precipitating agent and by calcining the precipitates at different temperatures. All catalyst samples prepared were characterized by XRD and physisorption of nitrogen. It is shown that by increasing the calcination temperature of precipitates, pure α-Fe2O3 (hematite phase) can be obtained. Furthermore, it is demonstrated that PS degradation using pure hematite as catalyst in comparison with mixed phase or non-catalytic degradation gives higher yields of oil and styrene monomer.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

21000 - Nano-technology

Projekt

<a href="/cs/project/EF16_019%2F0000853" target="_blank" >EF16_019/0000853: Institut environmentálních technologií - excelentní výzkum</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název statě ve sborníku

NANOCON 2020 : 12th International Conference on Nanomaterials - Research &amp; Application : conference proceedings : October 21-23, 2020, Brno, Czech Republic, EU

ISBN

978-80-87294-98-7

ISSN

2694-930X

e-ISSN

2694-930X

Počet stran výsledku

5

Strana od-do

267-271

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

21. 10. 2020

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000664505500045