The Effect of Forming Binder on the Properties of LDPE Cracking Catalyst

ABSTRACT The production of plastics has increased year by year, resulting in a large amount of waste plastics. Catalytic cracking of waste plastics into high‐value‐added chemical raw materials such as light olefins is one of the most promising chemical recovery technologies. The catalytic cracking of polyolefin waste plastics by ZSM‐5 zeolite can obtain a higher yield of light olefins. There are few studies on the shaped catalyst for plastic cracking. This study employed two distinct binders to prepare shaped catalysts and investigated the influence of the binders on the catalytic cracking performance of low‐density polyethylene (LDPE). The results indicated that the catalyst prepared with the aluminum phosphate‐based binder possessed a low attrition index, high retention of micropore specific surface and superior acidic properties after aging. Notably, this catalyst achieved a light olefin yield of 65.2 wt% in the catalytic cracking of LDPE.