Possibility of Normal Spherical Detonation in a Hydrogen-Oxygen Gas Mixture: Allowable Temperature, Mach Number, and Hydrogen Content

2014 ◽  
Vol 59 (10) ◽  
pp. 980-988
Author(s):  
M.M. Polatayko ◽  
Keyword(s):  
Mach Number ◽  
Hydrogen Content ◽  
Gas Mixture ◽  
Spherical Detonation ◽  
Oxygen Gas ◽  
Allowable Temperature

Preparation of hydrophobic flat sheet membranes from PVDF-HFP copolymer for enhancing the oxygen permeance in nitrogen/oxygen gas mixture

2020 ◽  
Vol 28 (6) ◽  
pp. 1566-1581
Author(s):  
Bahador Akbari ◽  
Asghar Lashanizadegan ◽  
Parviz Darvishi ◽  
Abdolrasoul Pouranfard
Keyword(s):  
Gas Mixture ◽  
Flat Sheet ◽  
Oxygen Gas

Autotrophic biosynthesis of polyhydroxyalkanoate by Ralstonia eutropha from non-combustible gas mixture with low hydrogen content

2020 ◽  
Vol 42 (9) ◽  
pp. 1655-1662 ◽  
Author(s):  
Yuki Miyahara ◽  
Masahiro Yamamoto ◽  
Romeo Thorbecke ◽  
Shoji Mizuno ◽  
Takeharu Tsuge
Keyword(s):  
Hydrogen Content ◽  
Ralstonia Eutropha ◽  
Gas Mixture ◽  
Combustible Gas ◽  
Combustible Gas Mixture

Effects of Aluminum Implantation on the Oxidation Behavior of Silicon Nitride in a Sodium Nitrate-Oxygen Gas Mixture

1996 ◽  
Vol 438 ◽  
Author(s):  
Y. Cheong ◽  
H. Du ◽  
S. P. Withrow
Keyword(s):  
Sodium Nitrate ◽  
Marked Improvement ◽  
Oxidation Behavior ◽  
Morphological Characteristics ◽  
Aluminum Concentration ◽  
Gas Mixture ◽  
Aluminum Implantation ◽  
Oxygen Gas ◽  
Si3n4 Ceramics

AbstractThe role of aluminum in negating the adverse effect of alkali species on the oxidation resistance of Si3N4 ceramics was investigated by exposing unimplanted and aluminum-implanted (1 and 5 at.%) Si3N4 samples to a sodium nitrate (95 ppm)-dry oxygen gas mixture at 1. atm and at 900°1100°C. Oxidation of unimplanted Si3N4 was rapid and linear with an activation energy of 57 kJ/mol. In contrast, samples implanted with aluminum exhibited a considerably reduced oxide growth which was parabolic in nature with activation energies of 103–112 kJ/mol. The morphological characteristics of the oxide layer also showed marked improvement as the aluminum concentration increased.

Revised model coefficients for vibrational relaxation in a nitrogen–oxygen gas mixture

Shock Waves ◽  
2012 ◽  
Vol 22 (6) ◽  
pp. 647-651 ◽  
Author(s):  
R. M. Gehre ◽  
V. Wheatley ◽  
R. R. Boyce
Keyword(s):  
Vibrational Relaxation ◽  
Gas Mixture ◽  
Oxygen Gas

Influence of Hydrogen Concentration on TiO2 Nanoparticles Prepared by Gaseous Detonation

2011 ◽  
Vol 694 ◽  
pp. 278-283
Author(s):  
Hong Hao Yan ◽  
Xian Chao Huang ◽  
Shu Xiong Xi
Keyword(s):  
Tio2 Nanoparticles ◽  
Hydrogen Concentration ◽  
Titanium Tetrachloride ◽  
Mixed Crystal ◽  
Relative Content ◽  
Gaseous Detonation ◽  
Gas Mixture ◽  
Detonation Method ◽  
Oxygen Gas ◽  
Xrd And Tem

This article is mainly introduced the detonation method to prepare TiO2 nanoparticles which use hydrogen-oxygen gas mixture as the explosion source and the titanium tetrachloride as the precursor. It studied TiO2 nanoparticles influenced by different hydrogen concertration. And analyzed the character of prepared TiO2 nanoparticles by XRD and TEM. The results show that the powders are mixed crystal of Rutile and Anatase. It is also found that the relative content of rutile grows larger and the size of grain becomes smaller (about 30~100nm) as the hydrogen content increases, and the TiO2 nanoparticles are mostly spherical. But the dispersion is becomes slightly worse, and the agglomeration appear.

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