What Is Mechanochemical Reaction?

Mechanochemical treatment as a method of high energy mechanical treatment of a solid body can be divided into two main types: mechanical milling (or ball milling), and mechanical alloying (or mechanochemical synthesis). In both cases, various designs of planetary and jet mills, or disintegrators are used.

What is mechanochemical activation?

Mechanochemical activation can be defined as a process able to induce structural disorder through intensive grinding. In certain conditions, it may increase the chemical reactivity of the processed material. The process is extensively utilized in extractive metallurgy, synthesis of nanocomposites or pharmacology.

What is meant by mechano chemistry?

: chemistry that deals with the conversion of chemical energy into mechanical work (as in the contraction of a muscle)

How does mechanochemical synthesis work?

Mechanochemical synthesis is a processing technique of solids in which mechanical and chemical phenomena are coupled on a molecular scale.

What is medicine in chemistry?

Medicinal chemistry is a discipline that encloses the design, development, and synthesis of pharmaceutical drugs. … It is also part of medicinal chemistry the evaluation of the properties of existing drugs. The use of plants, minerals, and animal parts as medicines has been recorded since the most ancient civilizations.

What is decomposition synthesis?

Explanation: Synthesis reactions are chemical reactions where two elements combine to make a product. … Decomposition reactions are chemical reactions where a reactant produces another product, usually two or more. This is when the bonds in the compound are broken apart to form new compounds.

What is ball milling method?

Ball milling is a grinding method that grinds nanotubes into extremely fine powders. During the ball milling process, the collision between the tiny rigid balls in a concealed container will generate localized high pressure. Usually, ceramic, flint pebbles and stainless steel are used. 25.

What happens during ball milling?

Ball mills rotate around a horizontal axis, partially filled with the material to be ground plus the grinding medium. Different materials are used as media, including ceramic balls, flint pebbles, and stainless steel balls. An internal cascading effect reduces the material to a fine powder.

What is a SAG mill?

SAG mills are autogenous mills that also use grinding balls like a ball mill. A SAG mill is usually a primary or first stage grinder. … Attrition between grinding balls and ore particles causes grinding of finer particles. SAG mills are characterized by their large diameter and short length as compared to ball mills.

What is the use of ball milling?

Ball milling is a mechanical technique widely used to grind powders into fine particles and blend materials.

How do you describe decomposition?

Decomposition is the process by which dead organic substances are broken down into simpler organic or inorganic matter such as carbon dioxide, water, simple sugars and mineral salts. … Animals, such as worms, also help decompose the organic materials. Organisms that do this are known as decomposers.

What is an example of a decomposition reaction?

A decomposition reaction occurs when one reactant breaks down into two or more products. This can be represented by the general equation: AB → A + B. Examples of decomposition reactions include the breakdown of hydrogen peroxide to water and oxygen, and the breakdown of water to hydrogen and oxygen.

Are all medicines drugs?

All medicines are drugs but all drugs are not medicines. Medicines generally are not addictive in nature, unlike drugs. Medicines are made for the treatment of a particular disease, while drug is often considered as narcotic, a stimulant or hallucinogen. Medicines never cause stupefaction while drugs do.

What are 4 types of drugs?

There are four main groups of drugs, divided according to their major effects, plus a few substances that do not easily fit into any category.

What types of drug are there?

  • stimulants (e.g. cocaine)
  • depressants (e.g. alcohol)
  • opium-related painkillers (e.g. heroin)
  • hallucinogens (e.g. LSD)

Can a chemist make drugs?

In the pharmaceutical industry chemists develop drugs and study their properties in order to determine the quality and stability of medicines. Some chemists even work in forensic science to establish evidence in criminal investigations.

What is Schiff base reaction?

The Schiff’s base reaction is a group-specific reaction for aldehydes. The reaction usually occurs under basic conditions with aromatic amines to form a Schiff’s base. Aniline is normally used to form a coloured anil or Schiff’s base with an aldehyde.

What decompose mean?

1 : to break down or be broken down into simpler parts or substances especially by the action of living things (as bacteria and fungi) Leaves decomposed on the forest floor. 2 : to separate a substance into simpler compounds Water can be decomposed into hydrogen and oxygen.

What does fully decompose mean?

1(with reference to a dead body or other organic matter) make or become rotten; decay or cause to decay. … ‘It takes several weeks or longer, depending upon the size, for the body to completely decompose.

What is decomposition explain it in your words?

Decomposition is the process of decaying or rotting. If you’ve ever left a carved pumpkin on the porch into late November, you have seen and smelled decomposition. … You can use the noun decomposition for rotting plants and animals.

How does a planetary ball mill work?

Planetary Ball Mill Working Principle

Like in a planetary system the grinding jar rotates on a orbit around the centre. This rotational movement is the self-rotation of the grinding container superimposed. The resulting centrifugal and acting acceleration forces lead to strong grinding effects.

What is the difference between a SAG mill and ball mill?

SAG mill is the primary tool for grinding. SAG mill is used before the other mills. Ball mill is a secondary, and it is used after the SAG mill. … SAG mill breaks the raw material into pieces for the further grinding.