Microwave selective effect: a new approach towards oxygen inhibition removal for highly-effective NO decomposition by microwave catalysis over BaMnxMg1−xO3 mixed oxides at low temperature under excess oxygen

2015 ◽  
Vol 51 (19) ◽  
pp. 4073-4076 ◽  
Author(s):  
Wentao Xu ◽  
Jicheng Zhou ◽  
Yingpiao Ou ◽  
Yushang Luo ◽  
Zhimin You
Keyword(s):  
Low Temperature ◽  
Microwave Irradiation ◽  
Mixed Oxides ◽  
No Decomposition ◽  
Excess Oxygen ◽  
New Approach ◽  
Oxygen Inhibition ◽  
Selective Effect ◽  
Highly Effective

Oxygen inhibition removal by microwave selective effect under microwave irradiation.

Selective Catalytic Reduction of NOX on Cr-Mn Mixed Oxide at Low Temperature

2011 ◽  
Vol 233-235 ◽  
pp. 1564-1567
Author(s):  
Zhi Hang Chen ◽  
Xue Hui Li ◽  
Chao Ping Cen ◽  
Xiang Gao ◽  
Le Fu Wang
Keyword(s):  
Citric Acid ◽  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Mixed Oxide ◽  
Mixed Oxides ◽  
Catalytic Reduction ◽  
Space Velocity ◽  
Excess Oxygen ◽  
Mixed Oxide Catalysts ◽  
Acid Method

The solid state reaction method, coprecipitation method and citric acid method were employed for the preparation of Cr-Mn mixed-oxide catalysts. Experimental results showed that this catalytic system has good selective catalytic reduction (SCR) properties of NOxby ammonia in the presence of excess oxygen at low temperature (80-220°C). 97.8% conversion of NOxwith 100% selectivity of N2had been achieved on Cr-MnOxmixed oxide prepared by the citric acid method at 120°C with the space velocity of 30,000 h-1. X-ray diffraction, BET were adopted for the characterization of the active phase. The characterization results showed that a new crystal phase CrMn1.5O4generated in mixed oxides which was the active center of the Cr-Mn catalysts.

Development of MgCo2O4–BaCO3 composites as microwave catalysts for the highly effective direct decomposition of NO under excess O2 at a low temperature

2019 ◽  
Vol 9 (16) ◽  
pp. 4276-4285 ◽  
Author(s):  
Wentao Xu ◽  
Qige Wang ◽  
Kang Peng ◽  
Fengtao Chen ◽  
Xue Han ◽  
...  
Keyword(s):  
Low Temperature ◽  
Decomposition Reaction ◽  
Research Topic ◽  
Direct Decomposition ◽  
No Decomposition ◽  
Highly Effective ◽  
Decomposition Of No

The catalytic NO decomposition reaction is a hot research topic.

scholarly journals Rolling membrane powered by low-temperature steam as a new approach to generate mechanical energy

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Chongshan Yin ◽  
Qicheng Liu ◽  
Qing Liu
Keyword(s):  
Water Vapor ◽  
Low Temperature ◽  
Combustion Engine ◽  
Mechanical Energy ◽  
Heat Energy ◽  
Steam Engine ◽  
Low Grade ◽  
Human Society ◽  
New Approach ◽  
Low Grade Heat

Abstract How to convert heat energy into other forms of usable energy more efficiently is always crucial for our human society. In traditional heat engines, such as the steam engine and the internal combustion engine, high-grade heat energy can be easily converted into mechanical energy, while a large amount of low-grade heat energy is usually wasted owing to its disadvantage in the temperature level. In this work, for the first time, the generation of mechanical energy from both high- and low-temperature steam is implemented by a hydrophilic polymer membrane. When exposed to water vapor with a temperature ranging from 50 to 100 °C, the membrane repeats rolling from one side to another. In nature, this continuously rolling of membrane is powered by the steam, like a miniaturized “steam engine”. The differential concentration of water vapor (steam) on the two sides of the membrane generates the asymmetric swelling, the curve, and the rolling of the membrane. In particular, results suggest that this membrane based “steam engine” can be powered by the steam with a relatively very low temperature of 50 °C, which indicates a new approach to make use of both the high- and low-temperature heat energy.

Highly effective microwave plasma application for catalyst-free and low temperature hydrogenation of biodiesel

Fuel ◽  
2021 ◽  
Vol 305 ◽  
pp. 121524
Author(s):  
Wijittra Wongjaikham ◽  
Grittima Kongprawes ◽  
Doonyapong Wongsawaeng ◽  
Kanokwan Ngaosuwan ◽  
Worapon Kiatkittipong ◽  
...  
Keyword(s):  
Low Temperature ◽  
Microwave Plasma ◽  
Catalyst Free ◽  
Highly Effective
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