Year1
- 含量：
- 99
- 外观：
- 白色
- 包装：
- 25公斤
Desorption stage
Use metallic carbon to adsorb double bond intermediates
Simultaneous desorption of hydrogen into saturated alkanes
Synthetic route and new process of stearic acid
Currently Most of the domestic products are produced using imported palm oil or refined vegetable oil as raw materials, followed by hydrogenation, hydrolysis, acid treatment, distillation and pressing. In addition to oleic acid, the main components of natural oils and fats include
linoleic acid containing
double bonds and
linolenic acid
containing
double bonds, especially for For vegetable oil, the content of these two acid lipids is relatively high. Linoleic acid is first hydrogenated to oleic acid and then further added
to stearic acid
The new stearic acid production technology uses high-acid value, low-quality oils and oil residues with more impurities as the base
The raw materials are first hydrolyzed and distilled to obtain refined mixed fatty acids
Mixed fatty acids can be hydrogenated directly
or oleic acid can be separated and the solid fatty acids
can be hydrogenated
[]
. The process route is simple
Raw materials and production
Low cost and good product quality.
Synthesis of stearic acid
Principle of synthesis of stearic acid
Stearic acid is produced by hydrogenation of fatty acids, that is, the reaction of fatty acids and hydrogen under the action of
catalyst
/> Make the unsaturated
double bond into a saturated bond to obtain stearic acid. The reaction is carried out in a gas-liquid-solid three-phase system. The hydrogenation reaction process
is divided into the following steps
)
Diffusion stage
Hydrogen diffuses into the fatty acid
Dissolution)
Adsorption stage
Dissolution Hydrogen is adsorbed on the catalyst surface
The surface is activated to form a metallic hydrogen active intermediate)
Reaction stage
Alkene
The double bonds in the olefin are coordinated on the active intermediate to form an activated metal complex
br/>
WhatsApp
