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Updated: Feb 2, 2026

Synthesis of Zeolites Using the ADOR Assembly-Disassembly-Organization-Reassembly Route
Published on: April 3, 2016
Investigation of the Selective Production of Ethylene from Propylene Over Small-Pore Zeolites
Jong-Won Jun1, Tae-Wan Kim1, Chul-Ung Kim1
1Center for Convergent Chemical Process, Korea Research Institute of Chemical Technology, 141 Gjeong-ro, Yuseong, Daejeon 34114, Republic of Korea.
Abstract:
The selective production of ethylene from the direct conversion of propylene (propylene-to-ethylene, PTE) was examined for the first time using various types of 8-membered ring (8-MR) zeolite materials with different pore structures. Among these 8-MR zeolites, SSZ-13 zeolite with a threedimensional chabazite structure exhibited the highest ethylene yield. To increase the ethylene selectivity further, the PTE reactions were conducted over SSZ-13 zeolite external surface modifications with silylation or phosphorus. The external surface modifications enhanced the ethylene selectivity due to the passivation of external acid sites. The surface-modified SSZ-13 catalyst exhibited the highest selectivity to ethylene, at more than 90% at 450 °C, a WHSV of 0.33 h-1, and a propylene particle pressure of 0.1 MPa.
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