scholarly journals Conversion of Biogas to Renewable Energy by Microwave Reforming

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4093
Author(s):  
Ha Jin Kim ◽  
Young Nam Chun
Keyword(s):  
Carbon Dioxide ◽  
Renewable Energy ◽  
Catalytic Activity ◽  
Conversion Efficiency ◽  
Oxidation Reaction ◽  
Methane Reforming ◽  
Complete Oxidation ◽  
High Quality ◽  
Product Gas ◽  
Main Components

Biogas consists of methane and carbon dioxide, the main components, which are major greenhouse gases that affect global warming. As such, in order to convert greenhouse gas into renewable energy, which is a high-quality fuel, the biogas microwave reforming characteristics were studied and the results are as follows: In the main components of biogas, methane and carbon dioxide, the conversion efficiency of both methane and carbon dioxide increased as the amount of CO2 relatively increased. This is because the problem of active pore failure due to gasification of the attached carbon generated during methane reforming was overcome. When nitrogen, a biogas-containing component, was added, the activity of catalytic activity pores was enhanced by promoting the production of microplasma, resulting in increased conversion efficiency. When the concentration of oxygen, which is a biogas-containing component, increased, the conversion efficiency increased, but when the concentration is more than 10%, the fuel value of the product gas decreased due to the complete oxidation reaction.

scholarly journals Biogas Reforming Conversion Character on Microwave-heating Carbon Receptor

2020 ◽  
Vol 42 (2) ◽  
pp. 40-46
Author(s):  
Hee Gaen Song ◽  
Young Nam Chun
Keyword(s):  
Carbon Dioxide ◽  
Global Warming ◽  
Space Velocity ◽  
Quartz Tube ◽  
Carbon Adsorption ◽  
Product Gas ◽  
Decomposition Of Methane ◽  
Main Components ◽  
Gasification Reaction ◽  
Reforming Gas

Objectives:Methane (CH<sub>4</sub>) and carbon dioxide (CO<sub>2</sub>) are the main components of biogas and are produced from biomass gasification. These two gases are a by-product gases that can be used as an energy source and is known as a greenhouse gas that affects global warming. In order to convert the gas which is the main cause of global warming into high-quality fuel energy, the microwave reforming characteristic research was conducted. In this study, the reforming characteristics of microwave carbon receptor pyrolysis-gasification gas were investigated. In addition, reforming gas conversion characteristics according to the reforming temperature, flow rate, and CH<sub>4</sub> / CO<sub>2</sub> ratio, which are the main influence variables, were studied.Methods:Experiment was achieved in a microwave convertor which was installed a quartz tube reactor. The reactor was irritated by a microwave energy to heat carbon receptor in a sample basket which was placed at the center of the quartz tube. A simulated gas mixture of methane and carbon dioxide was fed into the carbon receptor in the reactor, and a reformed product gas was collected and analyzed using a GC-TCD.Results and Discussion:In the case of microwave reforming of a mixture gas of carbon dioxide and methane, hydrogen and carbon was produced by thermal decomposition of methane. The produced carbon was adsorbed to the receptor and interfered with the catalytic activity. The attached carbon was reacted with the carbon dioxide by gasification reaction to produce carbon monoxide, and was cleaned to maintain a constant reforming conversion.Conclusions:As a result, the conversion rate and the product gas yield were high when the receptor bad reforming temperature was high and the space velocity in the convertor was low. The increase in methane in the simulated gas resulted in low conversion due to carbon adsorption.

Catalytic activity of palladium-doped silver dilute nanoalloys for formate oxidation from a theoretical perspective

2019 ◽  
Vol 21 (40) ◽  
pp. 22598-22610 ◽  
Author(s):  
Nan Zhang ◽  
Fuyi Chen ◽  
Longfei Guo
Keyword(s):  
Catalytic Activity ◽  
Oxidation Reaction ◽  
Theoretical Perspective ◽  
Single Atom ◽  
High Catalytic Activity ◽  
Formate Oxidation ◽  
First Time ◽  
Single Atom Alloys

We demonstrate for the first time that the Pd1Ag single-atom alloys exhibit a high catalytic activity for formate oxidation reaction.

Reactivities of platinum subnanocluster catalysts for the oxidation reaction of alcohols

RSC Advances ◽  
2015 ◽  
Vol 5 (122) ◽  
pp. 100693-100696 ◽  
Author(s):  
Masaki Takahashi ◽  
Takane Imaoka ◽  
Kimihisa Yamamoto
Keyword(s):  
Catalytic Activity ◽  
Oxidation Reaction ◽  
Alcohol Oxidation ◽  
Template Method ◽  
Size Dependent

The size-dependent catalytic activity for alcohol oxidation was investigated using the platinum subnanoclusters synthesized by the dendrimer template method.

Hydrothermal synthesis of Pt–Ag alloy nano-octahedra and their enhanced electrocatalytic activity for the methanol oxidation reaction

Nanoscale ◽  
2014 ◽  
Vol 6 (21) ◽  
pp. 12310-12314 ◽  
Author(s):  
Geng-Tao Fu ◽  
Ru-Guang Ma ◽  
Xue-Qing Gao ◽  
Yu Chen ◽  
Ya-Wen Tang ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Methanol Oxidation ◽  
Electrocatalytic Activity ◽  
Oxidation Reaction ◽  
Methanol Oxidation Reaction ◽  
High Quality ◽  
One Pot

High-quality Pt48Ag52 alloy nano-octahedra are synthesized via one-pot hydrothermal method showing excellent electrocatalytic activity and stability for methanol oxidation reaction.

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