It's hard to think about it... I can only think of one, and that is the reaction between sodium peroxide
and carbon dioxide. We know that dry carbon dioxide does not react with sodium peroxide. Sodium peroxide and water form
Sodium hydroxide
Sodium hydroxide reacts with CO2 to form water, so the water acts as a catalyst
Why can't we use it. hydroelectricity and electrolysis of water to produce hydrogen as a fuel?
Your idea is correct. The energy supply is provided by photons, but when writing the chemical formula, you only need to write the reaction conditions on it. You don't need to write the photons, because the chemical. the reaction occurs only at the molecular level. The reaction does not involve the supply of energy. Just like a chemical reaction that requires oven heatingnite energy, you only need to indicate the reaction conditions when writing the reaction equation, and this is not necessary. add specific energy to the reaction equation!
Basically, hydrogen is not the primary form of energy in modern society, and there aren't many places to use it. When the cost is high, few people naturally use it. is concerned, on the one hand, the method of electricity transmission is relatively mature and inexpensive, on the other hand, hydroelectric plants have more efficient energy storage measures in case of peak: when the consumption of energy is low, just use the remaining electricity to. pump water. But this does not mean that there are no applications for the production of hydrogen by electrolysis of water: substances with high energy density like oil can be used as clean energy to replaceer oil in places where electricity is not suitable, such as rockets. , planes, ships, etc. Additionally, as an intermediate substance for energy storage, wind power and photovoltaic power can be used to electrolyze water to produce hydrogen, and then produce electricity via gas turbines , which can effectively solve the problem of the new one. connection to the energy network. The problem with liquid hydrogen is that there is currently no particularly efficient and safe storage method. Large-scale storage still relies on low temperature and high pressure, which are not only expensive but also dangerous. This is still acceptable, but not acceptable for civil and commercial use. As a solution, solid-state storage of metal hydrides has sweet dreams and a cruel reality. It still belongs to the category of rare metals, and it is lIt is unlikely to be possible to have safe and efficient storage in the future, associated with wind energy. photovoltaic and electrical energy provided by nuclear energy have declined considerably, and it is quite possible that hydrogen energy will replace oil energy in some regions.