Why is it colorless after hydrogenation?
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Why does the product become colorless and transparent after hydrogenation in the hydrogenation unit?
Based on its main reactions, it can be seen that hydrogenation helps to modify the composition and physicochemical properties of the product, as well as to remove impurities from the original product; therefore, all hydrogenated products are relatively pure!
The substance that produces color has been converted into a colorless substance.
Hydrogenation alters the composition and physical-chemical properties of the product, removing impurities, sulfur, nitrogen, and unstable olefins from it; therefore, the hydrogenated product is colorless
The various colors are related to functional groups; the specific relationship was given back to the teacher long ago. Those who want to learn more can refer to the course on fine chemicals
It is mainly the nitrides and unsaturated alkenes that have a significant impact
You need to consider the degree of hydrogenation. Generally, coking and catalytic products turn light yellow after medium-pressure hydrogenation, while atmospheric and vacuum distillation diesel takes on a light blue color after such hydrogenation. Regular gasoline, on the other hand, has too short carbon chains to allow the formation of functional groups that can produce color.