Properties of Pt/C catalyst modified by chemical vapor deposition of Cr as a cathode of phosphoric acid fuel cell

2006 ◽  
Vol 52 (4) ◽  
pp. 1676-1682 ◽  
Author(s):  
Sang Joon Seo ◽  
Han-Ik Joh ◽  
Hyun Tae Kim ◽  
Sang Heup Moon
Keyword(s):  
Chemical Vapor Deposition ◽  
Fuel Cell ◽  
Phosphoric Acid ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Phosphoric Acid Fuel Cell

Effect of Compressive Residual Stress on Film Formed by Mechanochemical Multifunction Cavitation Processing

2021 ◽  
Vol 1016 ◽  
pp. 574-579
Author(s):  
Masataka Ijiri ◽  
Fumihiro Kato ◽  
Daisaku Maeda ◽  
Daichi Shimonishi ◽  
Toshihiko Yoshimura
Keyword(s):  
Residual Stress ◽  
Corrosion Resistance ◽  
Chemical Vapor Deposition ◽  
Fatigue Strength ◽  
Phosphoric Acid ◽  
Vapor Deposition ◽  
Compressive Residual Stress ◽  
Chemical Vapor ◽  
Al Alloys ◽  
Magnesium Surface

Recently, mechanochemical multifunction cavitation (MC-MFC) was developed to improve the corrosion resistance of the magnesium surface. MFC is a technology that combines water jet peening and ultrasound cavitation. MC-MFC is a technology that adds phosphoric acid to water. It can improve the corrosion resistance by forming a phosphate film on the Mg surface. Conventional anodic oxidation, plating, and chemical vapor deposition can improve corrosion resistance by forming a film on the Mg surface, but it is difficult to improve characteristics such as compressive residual stress on the surface. MFC-treated surfaces have previously imparted various properties such as imparting compressive residual stress necessary to improve the fatigue strength to Al alloys and Cr-Mo steels. In this study, the effect of film formed on MC-MFC processed surface on compressive residual stress was investigated.

scholarly journals Nickel Silicide Catalyst from Photovoltaic Waste for the Methanation Reaction

Minerals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1412
Author(s):  
Jakub Bumba ◽  
Vladislav Drinek ◽  
Pavel Krystynik ◽  
Pavel Dytrych ◽  
Olga Solcova
Keyword(s):  
Chemical Vapor Deposition ◽  
Phosphoric Acid ◽  
Vapor Deposition ◽  
Tubular Reactor ◽  
Chemical Vapor ◽  
Nickel Silicide ◽  
Magnesium Silicide ◽  
Total Conversion ◽  
Silicon Hydrides ◽  
Optimized Conditions

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.

Micro-Solid Oxide Fuel Cell Membranes Prepared by Aerosol-Assisted Chemical Vapor Deposition

2013 ◽  
Vol 4 (5) ◽  
pp. 1301383 ◽  
Author(s):  
Meike V. F. Schlupp ◽  
Anna Evans ◽  
Julia Martynczuk ◽  
Michel Prestat
Keyword(s):  
Chemical Vapor Deposition ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Vapor Deposition ◽  
Cell Membranes ◽  
Chemical Vapor ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Fuel Cell Membranes
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