【Q&A】March 30, 2017
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Question: What is the function of hydrogen in isomerization? Answer: The functions of hydrogen are: (1) Hydrogenation is required for the isomerization of ethylbenzene into xylene through a \"cycloalkane bridge\" ； (2) Cracking non-aromatic compounds (C9–C11 alkanes) into low-molecular-weight compounds in order to separate them from C8A ； (3) Acting as a heat carrier, it introduces a large amount of thermal energy into the reaction system ； (4) As a diluent, it distributes the reaction materials evenly over the surface of the catalyst. (5) It prevents carbon deposition on the catalyst’s surface, thereby maintaining the catalyst’s reactivity and stability. Petrochemical deep processing version – the event to share pictures of chemical equipment has started! A vast amount of wealth, along with HaiChuan coins, is waiting for you to claim! http://bbs.hcbbs.com/thread-1760733-1-1.html Summary post for the Petrochemical Deep Processing section’s 【Daily Question】 – updated daily by the moderator. http://bbs.hcbbs.com/thread-1496481-1-1.html Summary post of weekly topics for the Petrochemical Deep Processing section~~~ Continuously being updated! http://bbs.hcbbs.com/thread-1751483-1-1.html Petrochemical Sector — New Ideas for Energy Saving: The “Creative Thinking” Campaign http://bbs.hcbbs.com/thread-1666758-1-1.html Xiaomi phones are waiting for you! A thread for collecting chemical industry technical materials in the “Petrochemical Section” http://bbs.hcbbs.com/thread-1654603-1-1.html Many prizes are waiting for you to claim
Maintain heat balance inside the reactor. Prevent catalyst coking and carbon deposition to protect the catalyst.
It introduces a large amount of thermal energy into the reaction system, prevents catalyst coking, and acts as a diluent to evenly distribute the reactants over the catalyst surface.
Inhibits coke formation and protects the catalyst
1. The isomerization of ethylbenzene to xylene via a cycloalkane bridge requires hydrogenation； 2. Crack non-aromatic compounds (C9–C11 alkanes) into low-molecular-weight compounds in order to separate them from C8A ； 3. As a heat carrier, it introduces a large amount of thermal energy into the reaction system ； 4. As a diluent, it distributes the reaction materials evenly over the surface of the catalyst ； 5. Inhibit carbon deposition on the catalyst surface, thereby maintaining the catalyst’s reactivity and stability.
The functions of hydrogen are: (1) Hydrogenation is required for the isomerization of ethylbenzene into xylene via a cycloalkane bridge； (2) Crack non-aromatic compounds (C9–C11 alkanes) into low-molecular-weight compounds in order to separate them from C8A ； (3) Acting as a heat carrier, it introduces a large amount of thermal energy into the reaction system ； (4) As a diluent, it distributes the reaction materials evenly over the surface of the catalyst. (5) It prevents carbon deposition on the catalyst surface, thereby maintaining the catalyst’s reactivity and stability.
Answer: The functions of hydrogen are: (1) Hydrogenation is required for the isomerization of ethylbenzene into xylene through a \"cycloalkane bridge\"； (2) Cracking non-aromatic compounds (C9–C11 alkanes) into low-molecular-weight compounds in order to separate them from C8A ； (3) Acting as a heat carrier, it introduces a large amount of thermal energy into the reaction system ； (4) As a diluent, it distributes the reaction materials evenly over the surface of the catalyst. (5) It prevents carbon deposition on the catalyst’s surface, thereby maintaining the catalyst’s reactivity and stability.
(1) The isomerization of ethylbenzene to xylene via a cycloalkane bridge requires hydrogenation； (2) Cracking non-aromatic compounds (C9–C11 alkanes) into low-molecular-weight compounds in order to separate them from C8A ； (3) Acting as a heat carrier, it introduces a large amount of thermal energy into the reaction system ； (4) As a diluent, it distributes the reaction materials evenly over the surface of the catalyst. (5) It prevents carbon deposition on the catalyst’s surface, thereby maintaining the catalyst’s reactivity and stability. 2. Explain the effect of temperature on the isomerization reaction
(1) The isomerization of ethylbenzene to xylene via a cycloalkane bridge requires hydrogenation； (2) Crack non-aromatic compounds (C9–C11 alkanes) into low-molecular-weight compounds in order to separate them from C8A ； (3) Acting as a heat carrier, it introduces a large amount of thermal energy into the reaction system ； (4) As a diluent, it distributes the reaction materials evenly over the surface of the catalyst. (5) It prevents carbon deposition on the catalyst surface, thereby maintaining the catalyst’s reactivity and stability.
(1) The isomerization of ethylbenzene to xylene via a cycloalkane bridge requires hydrogenation； (2) Cracking non-aromatic compounds (C9–C11 alkanes) into low-molecular-weight compounds in order to separate them from C8A ； (3) Acting as a heat carrier, it introduces a large amount of thermal energy into the reaction system ； (4) As a diluent, it distributes the reaction materials evenly over the surface of the catalyst. (5) It prevents carbon deposition on the catalyst’s surface, thereby maintaining the catalyst’s reactivity and stability.