Which outcome diminishes ethylene yield when steam cracking ethane beyond design?

💡 Explanation

Increased residence time accelerates coke formation on the reactor walls via polymerization, because this blocks active sites; therefore ethylene production decreases rather than reactions fully equilibrating, due to the change in optimal reaction rate.

• Which outcome follows after exceeding glass transition temperature in amorphous polymer thread inserted into composite material?
• Which outcome results when excessive fluid velocity neglects viscosity within the Navier-Stokes equations?
• Which outcome occurs when an electron’s wave function overlaps during metallic bonding?
• Which outcome results when catalyst particles aggregate ex-situ?
• Which risk increases when pulsed lasers ablate a capacitor's dielectric?
• Which failure results when a MOSFET's gate oxide layer is stressed beyond design limits?