Base-free hydrogen generation from methanol using a bi-catalytic system

2014 ◽  
Vol 50 (6) ◽  
pp. 707-709 ◽  
Author(s):  
Angèle Monney ◽  
Enrico Barsch ◽  
Peter Sponholz ◽  
Henrik Junge ◽  
Ralf Ludwig ◽  
...  
Keyword(s):  
Catalytic System ◽  
Hydrogen Generation ◽  
Free Hydrogen

High-Purity, CO2-Free Hydrogen Generation from Crude Oils in Crushed Rocks Using Microwave Heating

2021 ◽  
Author(s):  
Qingwang Yuan ◽  
Xiangyu Jie ◽  
Bo Ren
Keyword(s):  
Microwave Heating ◽  
Environmental Impacts ◽  
High Purity ◽  
Oil And Gas ◽  
Hydrogen Generation ◽  
Petroleum Industry ◽  
Petroleum Reservoirs ◽  
Crude Oils ◽  
Hydrogen Yield ◽  
Free Hydrogen

Abstract While the demand for hydrocarbon resources has been continuously increasing in the past 150 years, the industry is, however, criticized for carbon dioxide (CO2) emissions and concomitant global warming concerns. The oil and gas industry also face growing pressures in the ongoing energy transition. Generating and producing hydrogen (H2) directly from petroleum reservoirs has the potential to mitigate environmental impacts while revolutionizing the traditional petroleum industry and enabling it to become a clean hydrogen industry. This paper proposes a novel approach to generate high-purity, CO2-free hydrogen from the abundant oil and gas resources in petroleum reservoirs using microwave heating. In this work, laboratory experiments were conducted to validate this scientific proof-of-concept and examine the roles of crushed rocks, catalysts, and water/oil ratio in hydrogen generation from crude oils in a reactor. A maximum of 63% ultimate hydrogen content is obtained in the generated gas mixtures, while the original CO2content in all experiments is negligible (<1%). Catalysts can promote hydrogen generation by accelerating rate and locally enhancing microwave (MW) absorption to create ‘super-hot spots'. Water also participates in reactions, and additional hydrogen is generated through water-gas shift reactions. The water-oil ratio in porous rocks affects the ultimate hydrogen yield. Overall, this research demonstrates the great potential of using MW heating to generate high-purity, CO2-free hydrogen from in situ petroleum reservoirs. Further research and wide application of this technology would potentially transform petroleum reservoirs to hydrogen generators, thus mitigating the environmental impacts of traditional petroleum industry while meeting the increasing demand for clean hydrogen energy. This technology would also benefit the safe transition towards a decarbonized society.

Marrying gas power and hydrogen energy: A catalytic system for combining methane conversion and hydrogen generation

2009 ◽  
Vol 11 (7) ◽  
pp. 921 ◽  
Author(s):  
Jurriaan Beckers ◽  
Cyril Gaudillère ◽  
David Farrusseng ◽  
Gadi Rothenberg
Keyword(s):  
Catalytic System ◽  
Methane Conversion ◽  
Hydrogen Generation ◽  
Hydrogen Energy

Base-free hydrogen generation from formaldehyde and water catalyzed by copper nanoparticles embedded on carbon sheets

2019 ◽  
Vol 9 (3) ◽  
pp. 783-788 ◽  
Author(s):  
Xiao Chen ◽  
Huan Zhang ◽  
Zhaoming Xia ◽  
Sai Zhang ◽  
Yuanyuan Ma
Keyword(s):  
Copper Nanoparticles ◽  
Hydrogen Generation ◽  
Cu Nanoparticles ◽  
Free Hydrogen

Base-free hydrogen generation through complete dehydrogenation from formaldehyde and water catalyzed by Cu nanoparticles embedded on carbon sheets.

Oxygen flux and process analysis of hydrogen separation from water through mixed conducting membrane

2005 ◽  
Vol 885 ◽  
Author(s):  
Annamalai Karthikeyan ◽  
Hengdong Cui ◽  
Srikanth Gopalan ◽  
Uday B. Pal
Keyword(s):  
Hydrogen Generation ◽  
Process Analysis ◽  
Experimental Conditions ◽  
Surface Exchange ◽  
Oxygen Ions ◽  
Hydrogen Flux ◽  
Oxidation Of Methane ◽  
Free Hydrogen ◽  
Surface Exchange Coefficient ◽  
Hydrogen Synthesis

ABSTRACTHydrogen synthesis and segregation from water splitting with simultaneous partial oxidation of methane can be achieved using MIEC membranes that conduct oxygen ions and electrons. The process offers hydrocarbon free hydrogen production on the feed side of the membrane (steam side) and syn-gas on the permeate side (methane side). A composite MIECs system comprising GdxCe1−xO2−x/2 (GDC) and GdxSr1−xTi1−yAlyO3 (GSTA) has been used and the hydrogen flux has been estimated. The oxygen diffusion coeffcient for oxygen transport through the bulk of the membrane and surface exchange coefficient of oxygen at the solid/gas interface were obtained using electrical conductivity relaxation (ECR) experiments and the hydrogen generation flux was measured for membranes of different thicknesses, with and without surface exchange catalysts for various experimental conditions.

Examples of Solar Thermal Fuel Production

2011 ◽  
Author(s):  
Christian Sattler ◽  
Hans Mu¨ller-Steinhagen ◽  
Martin Roeb ◽  
Dennis Thomey ◽  
Martina Neises
Keyword(s):  
Large Scale ◽  
Hydrogen Generation ◽  
Solar Fuels ◽  
Solar Thermal ◽  
Fuel Production ◽  
Solar Hydrogen ◽  
Final Goal ◽  
Main Challenge ◽  
Free Hydrogen ◽  
Energy Economy

The conversion of renewable energy especially solar energy into versatile fuels is a key technology for an innovative and sustainable energy economy. To finally benefit from solar fuels they have to be produced with high efficiencies and low to no greenhouse gas emissions in large quantities. The final goal will most probably be the carbon free fuel hydrogen. But the main challenge is its market introduction. Therefore a strategy incorporating transition steps has to be developed. Solar thermal processes have the potential to be amongst the most efficient alternatives for large scale solar fuel production in the future. Therefore high temperature solar technologies are under development for the different development steps up to the final goal of carbon free hydrogen. This paper discusses the strategy based on the efficiencies of the chosen solar processes incorporating carbonaceous materials for a fast market introduction and processes based on water splitting for long term solar hydrogen generation. A comparison with the most common industrial processes shall demonstrate which endeavors have to be done to establish solar fuels.

COx-free hydrogen generation via decomposition of ammonia over al, Ti and Zr−Laponite supported MoS2 catalysts

2020 ◽  
Vol 45 (15) ◽  
pp. 8568-8583 ◽  
Author(s):  
P. Santhana Krishnan ◽  
M. Neelaveni ◽  
P. Tamizhdurai ◽  
M. Mythily ◽  
S. Krishna Mohan ◽  
...  
Keyword(s):  
Hydrogen Generation ◽  
Free Hydrogen ◽  
Mos2 Catalysts

scholarly journals Perspectives on Low-Temperature Electrolysis and Potential for Renewable Hydrogen at Scale

2019 ◽  
Vol 10 (1) ◽  
pp. 219-239 ◽  
Author(s):  
Katherine Ayers ◽  
Nemanja Danilovic ◽  
Ryan Ouimet ◽  
Marcelo Carmo ◽  
Bryan Pivovar ◽  
...  
Keyword(s):  
Low Temperature ◽  
Hydrogen Generation ◽  
Low Cost ◽  
Operating Cost ◽  
Current Status ◽  
Manufacturing Optimization ◽  
Process Gas ◽  
Free Hydrogen ◽  
Renewable Hydrogen ◽  
Transportation Applications

Hydrogen is an important part of any discussion on sustainability and reduction in emissions across major energy sectors. In addition to being a feedstock and process gas for many industrial processes, hydrogen is emerging as a fuel alternative for transportation applications. Renewable sources of hydrogen are therefore required to increase in capacity. Low-temperature electrolysis of water is currently the most mature method for carbon-free hydrogen generation and is reaching relevant scales to impact the energy landscape. However, costs still need to be reduced to be economical with traditional hydrogen sources. Operating cost reductions are enabled by the recent availability of low-cost sources of renewable energy, and the potential exists for a large reduction in capital cost withmaterial and manufacturing optimization. This article focuses on the current status and development needs by component for the low-temperature electrolysis options.

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