scholarly journals Advances in Hypergolic Propellants: Ignition, Hydrazine, and Hydrogen Peroxide Research

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Stephen M. Davis ◽  
Nadir Yilmaz
Keyword(s):  
Hydrogen Peroxide ◽  
Wide Temperature Range ◽  
High Purity ◽  
Room Temperature ◽  
Specific Impulse ◽  
Review Of The Literature ◽  
Low Toxicity ◽  
Large Effort ◽  
Hypergolic Propellants ◽  
High Purity Hydrogen

A review of the literature pertaining to hypergolic fuel systems, particularly using hydrazine or its derivatives and hydrogen peroxide, has been conducted. It has been shown that a large effort has been made towards minimizing the risks involved with the use of a toxic propellant such as the hydrazine. Substitution of hydrazines for nontoxic propellant formulations such as the use of high purity hydrogen peroxide with various types of fuels is one of the major areas of study for future hypergolic propellants. A series of criteria for future hypergolic propellants has been recommended, including low toxicity, wide temperature range applicability, short ignition delay, high specific impulse or density specific impulse, and storability at room temperature.

Catalytic Properties of Nanoporous Manganese Oxides in Decomposition of High-Purity Hydrogen Peroxide

2016 ◽  
Vol 16 (9) ◽  
pp. 9153-9159 ◽  
Author(s):  
Goun Kim ◽  
Ji Man Kim ◽  
Choul-Ho Lee ◽  
Jeongsik Han ◽  
Byung-Hun Jeong ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
High Purity ◽  
Manganese Oxides ◽  
Catalytic Properties ◽  
High Purity Hydrogen

Improved Performance of High Energy Materials Based on Dinitramide Salts and Its Liquid Monopropellant

2021 ◽  
Vol 21 (8) ◽  
pp. 4524-4531
Author(s):  
Wooram Kim ◽  
Sujeong Heo ◽  
Jong-Ki Jeon ◽  
Youngmin Jo
Keyword(s):  
High Purity ◽  
Liquid Fuel ◽  
Room Temperature ◽  
Specific Impulse ◽  
Catalytic Decomposition ◽  
High Energy ◽  
Energy Materials ◽  
Practical Applications ◽  
Dinitramide Salts ◽  
Improved Performance

As an eco-friendly alternative fuel material, ammonium dinitramide (ADN, NH4N(NO2)2) is safe and stable at room temperature; however, it requires high purity for practical applications. A small amount of impurities can retard the catalytic decomposition of the monopropellant in the thruster, lower the specific impulse, and induce side effects such as clogging of the nozzle. Therefore, we purified NH4N(NO2)2 by performing repeated extractions, adsorption by powdered activated carbon, and low-temperature extractions. In this study, we evaluated the chemical density of purified NH4N(NO2)2 through Fourier-transform infrared spectroscopy, ultraviolet-visible spectroscopy, and ion chromatography, and obtained a final purity of 99.8%. Furthermore, we fabricated a liquid fuel using high-purity NH4N(NO2)2 as the main oxidizing agent, and can be prepared a mono-propellant formulation that exhibited decomposition at a minimum temperature of 148 °C.

Evaluation of Electric Load Following Capability on Fuel Cell System Fueled by High-Purity Hydrogen

2011 ◽  
Vol 131 (12) ◽  
pp. 927-935
Author(s):  
Yusuke Doi ◽  
Deaheum Park ◽  
Masayoshi Ishida ◽  
Akitoshi Fujisawa ◽  
Shinichi Miura
Keyword(s):  
Fuel Cell ◽  
High Purity ◽  
Cell System ◽  
Electric Load ◽  
Fuel Cell System ◽  
Load Following ◽  
High Purity Hydrogen

A Strategy for Preparing High-efficiency and Economical Catalytic Electrodes toward Overall Water Splitting

Nanoscale ◽  
2021 ◽  
Author(s):  
Dongxue Yao ◽  
Lingling Gu ◽  
Bin Zuo ◽  
Shuo Weng ◽  
Shengwei Deng ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Production Technology ◽  
High Purity ◽  
High Efficiency ◽  
Energy Development ◽  
Overall Water Splitting ◽  
Important Field ◽  
High Purity Hydrogen

The technology of electrolyzing water to prepare high-purity hydrogen is an important field in today's energy development. However, how to prepare efficient, stable, and inexpensive hydrogen production technology from electrolyzed...

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