The storage of CO2 and hydrogen within depleted gas and oil reservoirs holds immense potential for mitigating greenhouse gas emissions and advancing renewable energy initiatives. However, achieving effective storage necessitates a thorough comprehension
Carbon dioxide hydrogenation to methane, or methanation of carbon dioxide, also known as the Sabatier reaction, is the hydrogenation of carbon dioxide with hydrogen to form methane. The methanation of CO2 is the conversion of carbon dioxide and hydrogen to methane and water accruing to catalytic re...
HydrogenCarbon dioxideInternal combustion enginesExhaust emissionsHydrogen reduces intake temperature and pressure requirements for HCCI combustion.Maximum in-cylinder pressure is highly sensitive to intake temperature and pressure.Findings indicated excellent combustion stability and Indicated efficiency of 40%....
Gigatonne scale geological storage of carbon dioxide and energy (such as hydrogen) will be central aspects of a sustainable energy future, both for mitigating CO2 emissions and providing seasonal-based green energy provisions. In this Review, we evaluate the feasibility and challenges of expanding su...
Carbon dioxide (CO2), a key greenhouse gas produced from both anthropogenic and natural sources, has been recently considered to be an important C1 building-block for the synthesis of many industrial fuels and chemicals. Catalytic hydrogenation of CO2using a homogeneous system is regarded as an eff...
6. During the oxyhydrogen reaction little or no oxygen is consumed for normal respiratory processes. 7. Small concentrations of cyanide, affecting neither photosynthesis nor photoreduction in the same cells, first inhibit the induced reduction of carbon dioxide and then lead to a complete inactivation...
Developing bi-functional electrocatalysts for both oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER) is crucial for enhancing the energy transfer efficiency of metal–air batteries and fuel cells, as well as producing hydrogen with a high purity. Herein, a series of Pd–Ru allo...
Complex wells with high temperature and the presence of carbon dioxide and hydrogen sulfide acid gas require the use of high-temperature and high-density anti-corrosion cement slurry for cementing operations, and conventional cement slurry does not have the advantages of high density, high-temperature...
Carbon dioxide dissolves slightly in water to form a weak acid called carbonic acid, H2CO3, according to the following reaction: CO2 + H2O --> H2CO3 After that, carbonic acid reacts slightly and reversibly in water to form a hydronium cation, H3O+, and the bicarbonate ion, HCO3-, accor...
After reduction, metallic nickel and surface oxygen vacancies were concluded to be the active sites for carbon dioxide conversion. As nickel is easily oxidised, the ease of its reduction to the metallic phase is important for methanation. Given photothermal methanation is solely dependent on light ...