【Basic Knowledge Activity】Professional “Basic Knowledge” in the petrochemical industry: What are unsaturated hydrocarbons?
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This post was last edited by Xiao Gong 1985 on 2016-2-25 at 11:25. What are unsaturated hydrocarbons? bg9.png Unsaturated hydrocarbons are open-chain hydrocarbons and alicyclic hydrocarbons whose molecular structure contains double or triple bonds between carbon atoms. Compared to saturated hydrocarbons with the same number of carbon atoms, it contains fewer hydrogen atoms. Olefins (such as olefins, propylene), alkynes (such as acetylene), and cycloolefins (such as cyclopentene) all belong to unsaturated hydrocarbons. Unsaturated hydrocarbons are virtually absent in crude oil and natural gas, but are present in petroleum products derived from their secondary processing. =============================================@crysty @ylb913 @yanran88 @xutaotao @zhangqi1234 @68ZCW @cjhti @swl @liuquan1100 @yan*aoyong @maysee 【Petroleum and Chemicals Section】Compilation of professional “basic knowledge” posts (supported by the main forum; surprises await, and great prizes are up for grabs) http://bbs.hcbbs.com/thread-1557057-1-1.html (Source: Haichuan Chemicals Forum) This initiative encourages various sections to organize or individuals to create posts on basic knowledge (the content can be gathered from the Internet or created originally; participation can take place through multiple topics, with no restrictions on the approach – it could be an explanation of a noun or an introduction to a series of principles). What are some suggestions and methods for getting in touch with cleaners? The regular administrator will reward the content that performs excellently. You will also be rewarded for regions where the activities are more intensive. (Regions should also carry out consolidation and optimization based on the amount of such content available in their area.) ———————————————— The second phase of the campaign runs from February 20, 2016, to the end of June 2016; at least 50 award vouchers are available for you to claim (mugs, power banks, USB drives, and other prizes or campaign benefits). Awards can be given at any time based on performance, and additional rewards can also be granted at any time depending on performance. (12,000 event points and rewards await those regions that perform well)
Unsaturated hydrocarbons are hydrocarbons that contain double or triple bonds. Unsaturated hydrocarbons that contain double bonds are called “enes,” which means that there are few hydrogen atoms ； Those with three bonds are called “alkynes,” which indicates a lack of hydrogen atoms. In addition, there are aromatic hydrocarbons, such as “benzene”. The double and triple bonds in unsaturated hydrocarbons are not very strong, so they break easily, allowing for electrophilic substitution and electrophilic addition reactions to occur.
Unsaturated hydrocarbons are hydrocarbons that contain double or triple bonds. Unsaturated hydrocarbons that contain double bonds are called “enes,” which means that there are few hydrogen atoms ； Those with three bonds are called “alkynes,” which indicates a lack of hydrogen atoms. In addition, there are aromatic hydrocarbons, such as “benzene”. The double and triple bonds in unsaturated hydrocarbons are not very strong, so they break easily, allowing for electrophilic substitution and electrophilic addition reactions to occur.
Unsaturated hydrocarbons are hydrocarbons that contain double or triple bonds. Unsaturated hydrocarbons that contain double bonds are called “enes,” which means that there are few hydrogen atoms ； Those with three bonds are called “alkynes,” which indicates a lack of hydrogen atoms. In addition, there are aromatic hydrocarbons, such as “benzene”. The double and triple bonds in unsaturated hydrocarbons are not very strong, so they break easily, allowing for electrophilic substitution and electrophilic addition reactions to occur. For catalytic cracking feedstocks, the percentage of saturated hydrocarbons is a very important indicator; a high content of saturated hydrocarbons leads to higher yields~
Unsaturated hydrocarbons are a type of hydrocarbon; carbon has 4 valence electrons, which it uses to form covalent bonds with other carbon and hydrogen atoms. If all 4 valence electrons are used to form covalent bonds with other elements, and the remaining valence electrons on the carbon atoms in the same molecule also form covalent bonds with other elements, then the resulting compound is a saturated hydrocarbon. Carbon can also form double or triple bonds, meaning that carbon atoms can form 2 or 3 pairs of covalent bonds with each other.
Unsaturated hydrocarbons are hydrocarbons that contain C=C or C≡C bonds in their molecules, such as alkenes and alkynes.
Unsaturated hydrocarbons are substances that contain only carbon and hydrogen elements. Carbon has two electron shells, with four electrons in its outermost shell. Elements with two electron shells require eight electrons to achieve saturation; therefore, carbon needs four additional electrons to reach saturation, which it obtains by forming covalent bonds with H or C. A C=C structure involves two covalent bonds between carbon atoms, while a C≡C structure involves three such bonds. Substances whose molecules consist only of C=C, C≡C, and H bonds are unsaturated hydrocarbons.
Unsaturated hydrocarbons are hydrocarbons that contain double or triple bonds.