Active and stable catalyst for 1-butene cracking to propylene

Core-shell silicalite composite material was prepared using ZSM-5 as parent material via hydrothermal method. Catalytic cracking of 1-butene was performed using the synthesized core-shell silicalite composite. The propylene yield was higher for core-shell silicalite composite compared to parent ZSM-5 catalyst. The higher catalytic activity of core-shell silicalite composite is attributed to effective control of acid sites, which reduces the hydrogen transfer reactions leads to alkanes and aromatics. The core-shell silicalite composite showed excellent stability over 50 hr of the 1-butene stream. This is an abstract of a paper presented at the Proceedings 26th Saudi Japan Annual Symposium Technology in Petroleum Refining & Petrochemicals (KFUPM Dhahran, Saudi Arabia 11/7-8/2016).