Unusual magnetic properties of high-temperature reaction products of cerium metal and C[sub 60] solid

2001 ◽  
Author(s):  
S. Motohashi
Keyword(s):  
Magnetic Properties ◽  
High Temperature ◽  
Temperature Reaction ◽  
Reaction Products ◽  
High Temperature Reaction

Investigation of the high-temperature reaction products of boron carbide and silicon

Refractories ◽  
1988 ◽  
Vol 29 (3-4) ◽  
pp. 222-224 ◽  
Author(s):  
A. L. Yurkov ◽  
B. S. Skidan ◽  
S. V. Grigor'eva ◽  
S. M. Kromov
Keyword(s):  
High Temperature ◽  
Boron Carbide ◽  
Temperature Reaction ◽  
Reaction Products ◽  
High Temperature Reaction

scholarly journals High-pressure Synthesis of New layered Oxyhalide Perovskites

2014 ◽  
Vol 70 (a1) ◽  
pp. C762-C762
Author(s):  
Yoshihiro Tsujimoto ◽  
Yoshitaka Matsushita ◽  
Kazunari Yamaura ◽  
Tetsuo Uchikoshi
Keyword(s):  
High Pressure ◽  
Magnetic Properties ◽  
High Temperature ◽  
Transition Metal Oxides ◽  
Temperature Reaction ◽  
High Temperature Reaction ◽  
Square Planar ◽  
Pressure Synthesis ◽  
Structural And Magnetic Properties ◽  
High Valent

The development of transition metal oxides with perovskite-based structure has stimulated the search for mixed anion systems such as oxynitrides, oxyhalides and oxysulfides because incorporation of two different anions in one structure offers further opportunity to effectively induce chemical and physical properties that the pure oxides cannot possess. Such mixed anion phases, however, are difficult to be synthesized by a conventional high-temperature reaction. In this study, we have employed a high pressure technique to overcome this issue, and succeessfully synthesized a series of new layered oxhalide compounds. We present structural and magnetic properties of high-valent nickel oxyhalides Sr2NiO3X (X = F, Cl), and square-planar coordinated oxychlorides Sr2MO2Cl2 (Mn, Ni) and Ba2PdO2Cl2, isostructural with superconducting parent compund Ca2CuO2Cl2.

Study of high-pressure air jet controlled compression ignition with compound thermodynamic cycle for combustion and emission formation process

2020 ◽  
pp. 146808742096933
Author(s):  
Xiangyu Meng ◽  
Sicheng Liu ◽  
Jingchen Cui ◽  
Jiangping Tian ◽  
Wuqiang Long ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Low Temperature ◽  
Formation Process ◽  
Combustion Process ◽  
Thermodynamic Cycle ◽  
Compression Ignition ◽  
Temperature Reaction ◽  
Air Jet ◽  
High Temperature Reaction

A novel method called high-pressure air (HPA) jet controlled compression ignition (JCCI) based on the compound thermodynamic cycle was investigated in this work. The combustion process of premixed mixture can be controlled flexibly by the high-pressure air jet compression, and it characterizes the intensified low-temperature reaction and two-stage high-temperature reaction. The three-dimensional (3D) computational fluid dynamics (CFD) numerical simulation was employed to study the emission formation process and mechanism, and the effects of high-pressure air jet temperature and duration on emissions were also investigated. The simulation results showed that the NOx formation is mainly affected by the first-stage high-temperature reaction due to the higher reaction temperature. Overall, this combustion mode can obtain ultra-low NOx emission. The second-stage high-temperature reaction plays an important role in the CO and THC formation caused by the mixing effect of the high-pressure air and original in-cylinder mixture. The increasing air jet temperature leads to a larger high-temperature in-cylinder region and more fuel in the first-stage reaction, and therefore resulting in higher NOx emission. However, the increasing air jet temperature can significantly reduce the CO and THC emissions. For the air jet duration comparisons, both too short and too long air jet durations could induce higher NOx emission. A higher air jet duration would result in higher CO emission due to the more high-pressure air jet with relatively low temperature.

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