Propellant Chemistry Principles

In summary, the principles of propellant chemistry are often used in determining the ratios of complexants and metal salts in the preparation of ferrites using sol gel technology. For example, in the case of NiFe2O4, using metal nitrates and citric acid, the stoichiometric composition requires 2.22 mol of citric acid based on the total valences of -10, -15, and +18 for Ni, Fe, and citric acid respectively. The term "propellant" may be a typo and should likely be "reactant", as the choice of reactants is crucial in obtaining desired products while minimizing side reactions and impurities. The value of -40 comes from the stoichiometric equation for
  • #1
VASUbhagwat
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Time and again one comes across various authors using the sentence "" by the principles of propellant chemistry"", in order to determine the ratios of the complexant (fuel, like glycene, citric acid etc) and the metal salt, in preparatioin of ferrites by sol gel technology. Say for example in case of NiFe2O4 when metal nitrates as Ni(NO3)2, Fe(NO3)3 and citric acid are used, the total valences are – 10, – 15 and + 18, respectively. Hence the stoichiometric composition by the principles of Propellant chemistry requires that – 40 + 18n = 0 or n = 2.22 mol of citric acid.

1)How does it work out to -40?

2)what is this principle of Propellant chemistry?
 
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  • #2
I think the term "propellant" should be "reactant". In many chemical systems, the desired products are determined by stoichiometry, pH, temperature, electrochemical potential (ECP), etc, . . . , so choices of reactants/reagents and environment are critical in obtaining the desired products while minimizing side (or unintended) reactions and impurities.

The "-40" comes from -10 for Ni and 2* -15 = -30 for 2 Fe from Ni + 2Fe => NiFe2 in NiFe2O4.
 
  • #3
Sir

Thanks once again.

regards
vasudev
 

1. What is propellant chemistry?

Propellant chemistry is the study of the chemical processes involved in the creation and combustion of propellants, which are substances used to produce thrust in rockets and other propulsion systems.

2. What are the main components of a propellant?

The main components of a propellant are a fuel and an oxidizer. The fuel is a substance that reacts with the oxidizer to release energy, while the oxidizer supplies the oxygen needed for the reaction to occur. Other additives, such as binders and stabilizers, may also be included in the propellant formulation.

3. How are propellants classified?

Propellants can be classified based on their physical state, composition, and mode of ignition. They can be solid, liquid, or hybrid (a combination of solid and liquid). They can also be classified as monopropellants or bipropellants, depending on whether they contain one or two components that react to produce thrust.

4. What factors affect the performance of a propellant?

The performance of a propellant is influenced by several factors, including its chemical composition, density, and combustion temperature. Other factors such as particle size, shape, and distribution also play a role in determining the propellant's performance.

5. What safety considerations should be taken into account when working with propellants?

Handling and working with propellants can be dangerous due to their potential for combustion and explosion. It is important to follow proper safety protocols and handle propellants in a well-ventilated area. Protective gear, such as gloves and goggles, should also be worn when handling propellants. Additionally, proper storage and disposal of propellants are crucial to ensure safety.

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