Does compound with more hydrogen atoms burn faster?
Best insight from top research papers
The addition of hydrogen to a compound can affect its burning speed. In general, compounds with more hydrogen atoms tend to burn faster. This is because hydrogen is highly reactive and has a rapid flame speed . The laminar flame speeds of methane, ethane, and propane increase linearly with the increase of hydrogen amount . The increase in hydrogen volume fraction leads to an increase in the laminar flame velocity . The reaction rate of H + O2 = O + OH, which is promoted by hydrogen addition, is one of the main reasons for the enhanced burning velocity . However, it is important to note that the burning velocity can also be influenced by other factors such as carbon connectivity, branching, and alkyl substitution .
Answers from top 3 papers
More filters
| Papers (3) | Insight |
|---|---|
47 Citations | The paper states that with the increase of hydrogen amount, the laminar flame speeds of methane, ethane, and propane increase linearly. Therefore, compounds with more hydrogen atoms burn faster. |
| The paper does not directly answer the question of whether a compound with more hydrogen atoms burns faster. The paper discusses the effects of hydrogen and CO addition on the laminar flame speed and flame instabilities of CH4/air mixtures, but it does not compare the burning speeds of different compounds with varying hydrogen content. | |
19 Citations | The paper does not directly answer the question of whether a compound with more hydrogen atoms burns faster. The paper focuses on the effects of hydrogen blending on laminar burning velocity and flame structure, but does not compare different compounds with varying hydrogen content. |
Related Questions
How does hydrogen as new source of fuel?5 answersHydrogen is considered as an innovative system of overall energy, as it can be combined with electricity to serve as an energy carrier. It has properties such as light weight, easy storage, high energy density, and no harmful direct emissions, making it suitable for transportation and secure energy use. Hydrogen can be produced using various methods and resources like fossil fuels, wind, hydro, geothermic, and nuclear products, which makes it a beneficial energy carrier. It can be used as a clean and versatile fuel in the energy sector. Low-emission hydrogen is emerging as a key component for decarbonization, serving as a replacement for high-emitting alternatives in industries such as chemicals, refining, steel production, and transportation. However, challenges such as high production costs, technology costs, and regulatory barriers need to be overcome for the development of a low-emission hydrogen industry. Hydrogen can also be used in the automotive industry to control pollutant emissions and improve engine performance, but there are limitations and challenges that need to be addressed. Hydrogen plays a crucial role in the production of synthetic fuels from renewable resources, and its price and environmental impact can influence the viability of these fuels.
What are the advantages of green hydrogen over conventional fuels.?4 answersGreen hydrogen has several advantages over conventional fuels. Firstly, it is a clean and low-carbon energy source, which helps reduce greenhouse gas emissions. Secondly, hydrogen can be produced through electrolysis using renewable energy sources, such as solar or wind energy, making it a sustainable option. Additionally, green hydrogen serves as a means of energy storage, allowing excess renewable energy to be captured and used during periods of low generation, contributing to a reliable and stable renewable energy system. Furthermore, hydrogen enriched fuels have shown improved performance parameters compared to conventional fuels, making them a viable alternative. Overall, green hydrogen offers a cleaner, more sustainable, and reliable energy option compared to conventional fuels.
How does the addition of hydrogen affect the burning characteristics of methane?5 answersThe addition of hydrogen to methane affects the burning characteristics in several ways. When hydrogen is substituted for methane in a premixed fuel-lean flame, it leads to higher temperatures inside the burner and extends the hot zone inside the combustion chamber. The laminar burning velocity increases with an increase in hydrogen addition, resulting in a higher combustion rate. The addition of hydrogen also increases the maximum deflagration pressure and reduces the deflagration duration. Furthermore, the laminar burning velocity increases as the hydrogen fraction increases for all mixtures, and hydrogen-ammonia blends are the most effective in increasing the laminar burning velocity. The addition of hydrogen to methane/air mixtures increases the rate of pressure rise and measured pressure values, regardless of the air-fuel equivalence ratio. Overall, the addition of hydrogen enhances the combustion process, increases burning velocities, and affects flame propagation characteristics and temperature profiles.
What hydrogen derivatives are there?5 answersHydrogen derivatives mentioned in the abstracts include hydrides of Group V and VI elements, isotopes of hydrogen such as deuterium and tritium, and derivatives of non-steroidal anti-inflammatory drugs (NSAIDs) with hydrogen sulfide (H2S) releasing moieties. Additionally, organosilane hydrogen carriers derivatives are mentioned as a source of hydrogen.
Does hydrogen leak at the same rate as methane?5 answersHydrogen and methane leak at different rates. Numerical simulations show that liquid hydrogen has a downward trend while liquid methane shows a downwind trend when released. In terms of combustible clouds, hydrogen has larger movements than methane in both downwind and vertical directions. However, the dispersion of methane is greater than that of hydrogen in lower Froude numbers, but smaller in larger Froude numbers. When blending hydrogen into natural gas pipelines, the non-uniform concentration distribution caused by the density difference between hydrogen and natural gas can result in fluctuations of local hydrogen partial pressure. Experimental work shows that the addition of less than 25% by volume of hydrogen into pipeline networks does not significantly increase the risk of explosion. Therefore, hydrogen and methane do not leak at the same rate.
How hydrogen burn in an internal combustion engine?4 answersHydrogen burns in an internal combustion engine by being mixed with a hydrocarbon fuel or organic hydride-containing fuel. In the first case, hydrogen gas is contained in the form of minute bubbles in a liquid hydrocarbon fuel, which is then injected into the engine. In the second case, the organic hydride-containing fuel is separated into hydrogen and dehydrogenated fuel through a dehydrogenation reaction. Both hydrogen and dehydrogenated fuel can be supplied to the engine, or only hydrogen can be supplied depending on the mode of operation. Additionally, in a hydrogen using internal combustion engine, the dehydrogenation reactor is warmed up by burning the hydrogen stored in a hydrogen buffer tank, allowing the reactor to reach the active temperature quickly. These methods of hydrogen combustion in internal combustion engines aim to reduce pollution and utilize hydrogen as a cleaner fuel source.