Nickel Silicide Catalyst from Photovoltaic Waste for the Methanation Reaction.

0549685 - ÚCHP 2022 RIV CH eng J - Journal Article
Bumba, Jakub - Dřínek, Vladislav - Krystyník, Pavel - Dytrych, Pavel - Šolcová, Olga
Nickel Silicide Catalyst from Photovoltaic Waste for the Methanation Reaction.
Minerals. Roč. 11, č. 12 (2021), č. článku 1412. E-ISSN 2075-163X
R&D Projects: GA ČR GA15-14228S
Institutional support: RVO:67985858
Keywords : electronic waste utilization * carbon monoxide to SNG * energy from waste
OECD category: Chemical process engineering
Impact factor: 2.818, year: 2021
Method of publishing: Open access
https://www.mdpi.com/2075-163X/11/12/1412/htm

A technology designed for recycling photovoltaic (PV) cells at the end of their life was successfully used for the preparation of a nickel silicide catalyst. PV cells were mixed with magnesium scrap to produce magnesium silicide (Mg2Si), with almost total conversion under optimized conditions (400 °C, 5 Pa, 25 min), in a constructed semi-open tubular reactor. Subsequently, magnesium silicide was hydrolyzed by 25% phosphoric acid to produce a mixture of silicon hydrides, which were utilized as chemical vapor deposition (CVD) precursors for the preparation of a nickel silicide catalyst. The activity and stability of the prepared catalyst was repeatedly tested for methanation reactions. It was verified that the nickel silicide catalyst showed an approximately 20% higher activity for the methanation reactions compared to the commonly used nickel catalyst.
Permanent Link: http://hdl.handle.net/11104/0325629