terminology - Is reforming and isomerization the same thing ...
2020年12月12日 · Reforming is a processing technique by which the molecular structure of a hydrocarbon is rearranged to alter its properties. The process is frequently applied to low-quality gasoline stocks to improve their octane number and thereby improving combustion. There are four major types of reforming process: Dehydrogenation of naphthenes
Conversion of propane to methane - Chemistry Stack Exchange
2014年9月15日 · This probably defies the purpose, but still. Two-step process with steam reforming and Fischer–Tropsch synthesis $\ce{C3H8 +O2 +H2O -> CO + H2 + CO2}$ This step is usually performed with methane over nickel catalyst, but should work with propane as well. Remaining water is condensed and carbon dioxide is separated using triethanolamine as ...
Is there a reaction to get hydrogen from hydrocarbons?
2016年8月10日 · Hydrocarbons are in fact the main source of hydrogen gas. According to Wikipedia, 95% of all hydrogen is produced by the steam reforming reaction: $$\ce{CH4(g) + H2O(g) -> 3H2(g) + CO(g)}$$ This is a very important …
thermodynamics - Why are hydrogenation reactions exothermic ...
2016年1月28日 · I learned that all reactions that yield hydrogen are endothermic (such has reforming) and reactions that use up hydrogen are exothermic (FCC cracking, hydrogenation, etc.).
What happens to the argon in the Haber-Bosch process?
2017年12月20日 · The steam reforming reaction uses an enormous amount of heat, some of which can be supplied by combustion of process air to generate nitrogen: (Air) + CH4 --> CO2 + 2 H2O + trace argon + x N2 (x = 8 approx) However there is insufficient heat from the partial combustion of air to generate all the hydrogen needed to consume the nitrogen produced.
Which has stronger hydrogen bonds: water or ice?
2018年5月6日 · As ice is the solid form of water and it has more hydrogen bonds than water because its oxygen atoms are precisely tetrahedrally positioned and each oxygen is hydrogen bonded by four neighbouring o...
Can we make chemical bonds using light, instead of breaking them?
2022年7月8日 · Surely, if light can break bonds, it can make bonds as well. We find some simple examples in high school textbooks as well, such as the chlorination of olefin compounds under the presence of UV light.
Why is the Gibbs free energy for phase changes zero at constant ...
2015年11月23日 · The liquid is not reforming. We are removing heat until all the liquid has changed to ice. Look back at the initial and final states that we identified. Whenever you are trying to determine changes in thermodynamic functions, it is important to precisely identify the initial and final states that you are considering. The system is not unchanged.
Why do highly branched alkanes have higher octane numbers …
2018年7月12日 · The reaction desired in an automobile piston is a rapid burning, not an explosion (very very rapid reaction). If the air + gasoline vapor burns much faster than the camshaft is turning, the explosion causes a ping, or high pressure rise in a smaller volume (because the piston has not moved far enoug
Difference between precipitation and crystallisation
What is the main difference between precipitation and crystallization. Is precipitation a chemical change and crystallization a physical change.