Feasible production of hydrogen from methanol reforming through single stage DC microplasma reactor

2020 ◽  
Vol 34 (11) ◽  
pp. 2050108
Author(s):  
S. Meiyazhagan ◽  
S. Yugeswaran ◽  
K. Suresh ◽  
P. V. Ananthapadmanabhan ◽  
A. Kobayashi
Keyword(s):  
Conversion Efficiency ◽  
Feed Rate ◽  
Clean Energy ◽  
Methanol Conversion ◽  
Input Power ◽  
Single Stage ◽  
Energy Yield ◽  
Hydrogen Energy ◽  
Methanol Reforming ◽  
Production Of Hydrogen

Plasma-assisted methanol reforming is an effective technology to produce hydrogen for various clean energy applications. In this study, hydrogen was produced from methanol reforming in a unique single stage microplasma reactor. Microplasma was produced between the capillary stainless steel tube electrodes by using high voltage direct current (DC) power supply. Blend of methanol and water was supplied to the microplasma reactor in a controlled flow rate using nitrogen as carrier gas. The effects of applied input power to the discharge and methanol feed rate on the performance of the plasma methanol decomposition were investigated. The experimental results showed that increasing the applied input power expressively increased the methanol conversion and hydrogen energy yield. In contrast, the increased feed rate significantly decreased the methanol conversion efficiency though it enriched the hydrogen energy yield. Under selective conditions, hydrogen energy yield of 24.14 g kW[Formula: see text] h[Formula: see text] was achieved with the conversion efficiency of 71% and 50% selectivity for H2, which is comparatively better than many of plasma-assisted methanol reforming processes. This investigation reveals that methanol reforming through a single stage microplasma reactor has the ability to produce hydrogen efficiently without coke formation at room-temperature and atmospheric pressure.

scholarly journals Nickel Phosphide Electrocatalysts for Hydrogen Evolution Reaction

Catalysts ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 188 ◽  
Author(s):  
Cun Hu ◽  
Chao Lv ◽  
Shuai Liu ◽  
Yan Shi ◽  
Jiangfeng Song ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Preparation Method ◽  
Clean Energy ◽  
High Energy ◽  
Nickel Phosphide ◽  
Hydrogen Energy ◽  
Practical Applications ◽  
Nickel Phosphides ◽  
Production Of Hydrogen

The production of hydrogen through electrochemical water splitting driven by clean energy becomes a sustainable route for utilization of hydrogen energy, while an efficient hydrogen evolution reaction (HER) electrocatalyst is required to achieve a high energy conversion efficiency. Nickel phosphides have been widely explored for electrocatalytic HER due to their unique electronic properties, efficient electrocatalytic performance, and a superior anti-corrosion feature. However, the HER activities of nickel phosphide electrocatalysts are still low for practical applications in electrolyzers, and further studies are necessary. Therefore, at the current stage, a specific comprehensive review is necessary to focus on the progresses of the nickel phosphide electrocatalysts. This review focuses on the developments of preparation approaches of nickel phosphides for HER, including a mechanism of HER, properties of nickel phosphides, and preparation and electrocatalytic HER performances of nickel phosphides. The progresses of the preparation and HER activities of the nickel phosphide electrocatalysts are mainly discussed by classification of the preparation method. The comparative surveys of their HER activities are made in terms of experimental metrics of overpotential at a certain current density and Tafel slope together with the preparation method. The remaining challenges and perspectives of the future development of nickel phosphide electrocatalysts for HER are also proposed.

Hydrogen Energy Harvesting through nanomaterials under Solar Light Irradiation

2019 ◽  
Vol 03 ◽  
Author(s):  
N. R. Khalid ◽  
Muhammad Faheem Malik ◽  
Ho Soon Min ◽  
Sedigheh Abbasi
Keyword(s):  
Continuous Production ◽  
Clean Energy ◽  
Cell System ◽  
Semiconductor Material ◽  
Solar Light ◽  
Hydrogen Energy ◽  
Hybrid Device ◽  
Production Of Hydrogen ◽  
Main Motive ◽  
Clean Energy Source

In this review, the evolution of hydrogen in combined cell system of Photoelectrocatalytic and microbial fuel disused. Hydrogen is used as chemical fuel. Hydrogen is being produced through Photoelectrocatalytic method. The semiconductor material put into the water and irradiated with solar light after which the hydrogen produced by different steps and accumulated. Production of hydrogen also occur in microbial fuel cell system. These are electrochemical devices that initially used to treat the wastewater. But now this cell has entered into very interesting field of research which is Bioelectrochemical (BES). BES produces hydrogen using biomass as a catalyst using small consumption voltage rather than simple electrolysis of water. The first sections explain how hydrogen is produced individually by these two methods. And then we make comprehensive review on the evolution of hydrogen by combined microbial fuel and photoelectrocatalytic cell system, which is our main motive of writing this article. The continuous production of hydrogen by (PEC-MFC) hybrid device, using sunlight and splitting of water and electrohydrogenesis of microbial cell in fusion device (PEC-MFC) were also reported. This method gives continuous production of hydrogen using wastewater under solar light and also gives the treatment of wastewater. It is the clean energy source and also fulfills the today’s demand of energy. At last, a review on production of hydrogen by microbial photoelectrochemical system which is constructed by photocathode of semiconductor material and an anode of microbial. Production of hydrogen was continuously achieved without external voltage under ultraviolet irradiation.

Compressor Issues for Hydrogen Production and Transmission Through a Long Distance Pipeline Network

2008 ◽  
Vol 59 (4) ◽  
Author(s):  
Fred Starr ◽  
Calin-Cristian Cormos ◽  
Evangelos Tzimas ◽  
Stathis Peteves
Keyword(s):  
Pressure Ratio ◽  
High Strength Steels ◽  
High Strength ◽  
Energy System ◽  
Pipeline System ◽  
Hydrogen Energy ◽  
Long Distance ◽  
System Pressure ◽  
Production Of Hydrogen ◽  
Plant Exit

A hydrogen energy system will require the production of hydrogen from coal-based gasification plants and its transmission through long distance pipelines at 70 � 100 bar. To overcome some problems of current gasifiers, which are limited in pressure capability, two options are explored, in-plant compression of the syngas and compression of the hydrogen at the plant exit. It is shown that whereas in-plant compression using centrifugal machines is practical, this is not a solution when compressing hydrogen at the plant exit. This is because of the low molecular weight of the hydrogen. It is also shown that if centrifugal compressors are to be used in a pipeline system, pressure drops will need to be restricted as even an advanced two-stage centrifugal compressor will be limited to a pressure ratio of 1.2. High strength steels are suitable for the in-plant compressor, but aluminium alloy will be required for a hydrogen pipeline compressor.

High-performance anion exchange membrane alkaline seawater electrolysis

2021 ◽  
Author(s):  
Yoo Sei Park ◽  
Jooyoung Lee ◽  
Myeong-Je Jang ◽  
Juchan Yang ◽  
Jae Hoon Jeong ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Anion Exchange Membrane ◽  
Hydrogen Energy ◽  
Highly Active ◽  
Production Of Hydrogen ◽  
Exchange Membrane ◽  
Seawater Electrolysis

Seawater electrolysis is a promising technology for the production of hydrogen energy and seawater desalination. To produce hydrogen energy through seawater electrolysis, highly active electrocatalysts for the oxygen evolution reaction...

scholarly journals Synthetic models of hydrogenases based on framework structures containing coordinating P, N-atoms as hydrogen energy electrocatalysts – from molecules to materials

2020 ◽  
Vol 92 (8) ◽  
pp. 1305-1320 ◽  
Author(s):  
Yulia H. Budnikova ◽  
Vera V. Khrizanforova
Keyword(s):  
Fossil Fuels ◽  
High Current Density ◽  
Clean Energy ◽  
Hydrogen Energy ◽  
Energy Technologies ◽  
Highly Active ◽  
Synthetic Materials ◽  
Metal Derivatives ◽  
Metal Organic ◽  
Metal Doped

AbstractNowadays, hydrogen has become not only an extremely important chemical product but also a promising clean energy carrier for replacing fossil fuels. Production of molecular H2 through electrochemical hydrogen evolution reactions is crucial for the development of clean-energy technologies. The development of economically viable and efficient H2 production/oxidation catalysts is a key step in the creation of H2-based renewable energy infrastructure. Intrinsic limitations of both natural enzymes and synthetic materials have led researchers to explore enzyme-induced catalysts to realize a high current density at a low overpotential. In recent times, highly active widespread numerous electrocatalysts, both homogeneous or heterogeneous (immobilized on the electrode), such as transition metal complexes, heteroatom- or metal-doped nanocarbons, metal-organic frameworks, and other metal derivatives (calix [4] resorcinols, pectates, etc.), which are, to one extent or another, structural or functional analogs of hydrogenases, have been extensively studied as alternatives for Pt-based catalysts, demonstrating prospects for the development of a “hydrogen economy”. This mini-review generalizes some achievements in the field of development of new electrocatalysts for H2 production/oxidation and their application for fuel cells, mainly focuses on the consideration of the catalytic activity of M[P2N2]22+ (M = Ni, Fe) complexes and other nickel structures which have been recently obtained.

scholarly journals Household willingness to adopt a single-stage solar-supported hyper-thermophilic anaerobic biogas digester in Ghana

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Isaac Mbir Bryant ◽  
Abdul-Rahaman Afitiri
Keyword(s):  
Low Income ◽  
Interactive Effect ◽  
Clean Energy ◽  
Simple Random Sampling ◽  
High Income ◽  
Single Stage ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Quality Life ◽  
Willingness To Adopt

Abstract Background Sustainability of energy is key for quality life; thus, the use of clean energy at the household level warrants moving from fossil-based energy to modern forms like biogas. However, the joint interactive effect of household income, biogas usage and willingness to adopt a single-stage solar-supported hyper-thermophilic anaerobic biogas digester (SSHTABD) is not known. Methods A cross-sectional survey was carried out to assess the willingness of residents of Elmina to adopt the SSHTABD. Stratified and simple random sampling techniques were used to select 219 respondents fitted into a complementary log–log regression model. Results Household willingness to adopt the SSHTABD was 86%. Among them are households not willing to use biogas but have high income and households willing to use biogas but have either low or high income are more likely to adopt the technology compared to households not willing to use biogas and have low income. Households not willing to use biogas, but have high income (OR = 1.725, confidence interval [CI] 0.803–3.706) and households willing to use biogas, but have low income (OR = 1.877, CI 1.103–3.188) compared to households willing to use biogas and have high income (OR = 1.725, CI 1.080–3.451) are more likely to adopt the technology as households not willing to use biogas and have low income. Additionally, households employed under the formal government sector, formal and informal private sectors are 40%, 136% and 103%, respectively, more likely to adopt the technology than those unemployed. Conclusion The high willingness of households to adopt the technology calls for government to support households to own biogas digesters thus requires policy interventions and interdisciplinary research.

scholarly journals A Mini Review on Doped Nickel-Based Electrocatalysts for Hydrogen Evolution Reaction

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4651
Author(s):  
Yilin Deng ◽  
Wei Lai ◽  
Bin Xu
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Water Electrolysis ◽  
Energy Resources ◽  
Alkaline Media ◽  
Hydrogen Energy ◽  
Heteroatom Doping ◽  
Highly Active ◽  
Production Of Hydrogen

The energy crisis and environmental pollution have attracted much attention and have promoted researches on clean and sustainable hydrogen energy resources. With the help of highly active and stable transition metal nickel-based catalysts, the production of hydrogen from water electrolysis from electrolyzed water has become an inexpensive and efficient strategy for generating hydrogen energy. In recent years, heteroatom doping has been found to be an effective strategy to improve the electrocatalytic hydrogen evolution reaction (HER) performances of nickel-based catalysts in acidic, neutral, and alkaline media. This review will highlight many recent works of inexpensive and readily available heteroatom-doped nickel-based HER catalysts. The evaluation methods for the performances of HER catalyst will be briefly described, and the role of heteroatom doping and its application in nickel-based catalyst will be summarized. This article will also point out some heteroatom doping strategies, which may provide references and inspire the design of other catalysts with dopants.

Progress in the production of hydrogen energy from food waste: A bibliometric analysis

2021 ◽  
Author(s):  
Adithya Sridhar ◽  
Muthamilselvi Ponnuchamy ◽  
Ponnusamy Senthil Kumar ◽  
Ashish Kapoor ◽  
Leilei Xiao
Keyword(s):  
Bibliometric Analysis ◽  
Food Waste ◽  
Hydrogen Energy ◽  
Production Of Hydrogen
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