Temperature Dependence of Dehydrogenation of Ethyl Benzene to Styrene

Requires a Wolfram Notebook System

Interact on desktop, mobile and cloud with the free Wolfram CDF Player or other Wolfram Language products.

Requires a Wolfram Notebook System

Edit on desktop, mobile and cloud with any Wolfram Language product.

Dehydrogenation of ethyl benzene (EB) in the presence of excess water (an inert component) produces styrene (S) and hydrogen: . This reaction is endothermic (i.e., favored by high temperatures). This Demonstration plots the equilibrium conversion versus temperature (blue curve) for various values of the total pressure, , and the initial molar ratio, , of water to ethyl benzene. The shape of this curve shows the typical sigmoidal increase in conversion with the increase in temperature for endothermic reactions. Conversions in the blue region are accessible while those in the red region are inaccessible. Typical values used in industry for and are 0.14 MPa and 15, respectively. The equilibrium constant as a function of temperature is given by: (expressed in MPa).

Contributed by: Housam Binous and Ahmed Bellagi (March 2011)
Open content licensed under CC BY-NC-SA



R. W. Missen, C. A. Mims, and B. A. Saville, Introduction to Chemical Reaction Engineering and Kinetics, New York: Wiley, 1999.

Feedback (field required)
Email (field required) Name
Occupation Organization
Note: Your message & contact information may be shared with the author of any specific Demonstration for which you give feedback.