Electrochemical Nitrogen Reduction Kinetics on a Copper Sulfide Catalyst for NH3 Synthesis at Low Temperature and Atmospheric Pressure

AbstractWe have studied oxidation of various Si samples including: Ge implanted Si, CVD and MBE grown Si(0.4–4% Ge) alloys, and MBE grown Si-Si(Ge) superlattices. The samples were oxidized in pyrogenic steam (800–1000°C, atmospheric pressure) and at low temperature and high pressure (740°C, 205 atm of dry O2). The oxidized samples were analyzed with RBS/channeling and ellipsometry.An enhanced oxidation rate was seen for all Ge doped samples, compared with rates for pure Si. The magnitude of the enhancement increased with decreasing oxidation temperature. For steam oxidations the Ge was segregated from the oxide and formed an epitaxial layer at the Si-SiO2 interface; the quality of the epitaxy was highest for the highest oxidation temperatures. For high pressure oxidation the Ge was trapped in the oxide and the greatest enhancement in oxidation rate (>100%) was observed.

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CO2 hydrogenation into CH4 over Ni–Fe catalysts

Functional Materials Letters ◽

10.1142/s1793604718500571 ◽

2018 ◽

Vol 11 (03) ◽

pp. 1850057 ◽

Cited By ~ 8

Author(s):

Reza Meshkini Far ◽

Olena V. Ischenko ◽

Alla G. Dyachenko ◽

Oleksandr Bieda ◽

Snezhana V. Gaidai ◽

...

Keyword(s):

Low Temperature ◽

Synergistic Effect ◽

Atmospheric Pressure ◽

High Efficiency ◽

Co2 Hydrogenation ◽

Hydrogenation Catalysts ◽

Fe Catalysts ◽

First Time ◽

Supported Ni ◽

Hydrogenation Of Co

Here, we report, for the first time, on the catalytic hydrogenation of CO2 to methane at atmospheric pressure. For the preparation of hydrogenation catalysts based on Ni and Fe metals, a convenient method is developed. According to this method, low-temperature reduction of the co-precipitated Ni and Fe oxides with hydrogen gives the effective and selective bimetallic Ni[Formula: see text]Fe[Formula: see text], Ni[Formula: see text]Fe[Formula: see text] and Ni[Formula: see text]Fe[Formula: see text] catalysts. At the temperature range of 300–400[Formula: see text]C, they exhibit a high efficiency of CH4 production with respect to monometallic Ni and Fe catalysts. The results imply a synergistic effect between Ni and Fe which caused the superior activity of the Ni[Formula: see text]Fe[Formula: see text] catalyst conversing [Formula: see text]% of CO2 into CH4 at 350[Formula: see text]C. To adapt the Ni–Fe catalysts in the industry, the effect of two different carriers on the efficiency of the alumina-supported Ni[Formula: see text]Fe[Formula: see text] catalyst was investigated. It is found that the Ni[Formula: see text]Fe[Formula: see text]/[Formula: see text]-Al2O3 catalyst effectively conversed CO2 giving 100% methane yield already at 275[Formula: see text]C.

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Particle charge distributions in the effluent of a flow-through atmospheric pressure low temperature plasma

Plasma Sources Science and Technology ◽

10.1088/1361-6595/ac12c1 ◽

2021 ◽

Author(s):

Eric Husmann ◽

Elijah Thimsen ◽

Xiaoshuang Chen

Keyword(s):

Low Temperature ◽

Atmospheric Pressure ◽

Particle Charge ◽

Low Temperature Plasma ◽

Temperature Plasma ◽

Charge Distributions ◽

Flow Through

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Erratum to: Benzylammonium Thermometer Ions: Internal Energies of Ions Formed by Low Temperature Plasma and Atmospheric Pressure Chemical Ionization

Journal of the American Society for Mass Spectrometry ◽

10.1007/s13361-015-1292-x ◽

2015 ◽

Vol 26 (12) ◽

pp. 2085-2085

Author(s):

Edward R. Stephens ◽

Morphy Dumlao ◽

Dan Xiao ◽

Daming Zhang ◽

William A. Donald

Keyword(s):

Low Temperature ◽

Atmospheric Pressure ◽

Chemical Ionization ◽

Atmospheric Pressure Chemical Ionization ◽

Low Temperature Plasma ◽

Temperature Plasma ◽

Pressure Chemical Ionization ◽

Pressure Chemical ◽

Thermometer Ions

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Low-temperature synthesis of copper sulfide nano-crystals of novel morphologies by hydrothermal process

Materials Letters ◽

10.1016/j.matlet.2007.03.111 ◽

2007 ◽

Vol 61 (28) ◽

pp. 5029-5032 ◽

Cited By ~ 28

Author(s):

Jing Zou ◽

Jianxue Zhang ◽

Baohua Zhang ◽

Pingtang Zhao ◽

KaiXun Huang

Keyword(s):

Low Temperature ◽

Copper Sulfide ◽

Hydrothermal Process ◽

Low Temperature Synthesis ◽

Temperature Synthesis

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Research of Water Damage Resistance Performance of CAM in Low Temperature Condition

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.723.157 ◽

2013 ◽

Vol 723 ◽

pp. 157-162

Author(s):

Jian Li ◽

Qu Chao ◽

He Ping

Keyword(s):

Low Temperature ◽

Atmospheric Pressure ◽

Asphalt Pavement ◽

Natural World ◽

Chloride Salt ◽

The Road ◽

Normal Atmospheric Pressure ◽

Water Damage ◽

Resistance Performance ◽

Complex Polymer

Under normal atmospheric pressure conditions, volume suddenly increases about 11% when the water freezes and decreased when the ice melts. The pressure can reach up to 2500 times of atmospheric pressure in the closed space when the water freezing. This is a very important characteristic of the natural world and the industrial. In low temperature condition, the snow on the pavement is easy to melt and freeze, and it will affect the road safety, increase the cracking of the road and accelerate asphalt pavement water damage. Bitumen is a mixture consisting of some extremely complex polymer hydrocarbons and hydrocarbon derivatives of non-metallic (oxygen, sulfur, nitrogen). Deicing salt is used to prevent freezing in that area, chloride salt is its main ingredient. When the water melting point reduced, it is not easy to icing but to penetrate the asphalt pavement. If the temperature is continued to reduce, salt solution will still freezing. At last, the pavement will form water damage in repeated freeze-thaw cycles conditions.

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