Acid-Modified Hierarchical Porous Rare-Earth-Containing Y Zeolite as a Highly Active and Stable Catalyst for Olefin Removal

Haibin Yu; Jiazhong Zang; Guanfeng Liu; Meihua Hong; Rui Chen; Tiehong Chen

doi:10.1021/acsomega.0c01457

Acid-Modified Hierarchical Porous Rare-Earth-Containing Y Zeolite as a Highly Active and Stable Catalyst for Olefin Removal

ACS Omega. 2020 Jul 16;5(29):18028-18034. doi: 10.1021/acsomega.0c01457. eCollection 2020 Jul 28.

Authors

Haibin Yu¹, Jiazhong Zang¹, Guanfeng Liu¹, Meihua Hong¹, Rui Chen², Tiehong Chen²

Affiliations

¹ CenerTech Tianjin Chemical Research & Design Institute Company, Ltd., Tianjin 300131, PR China.
² School of Materials Science and Engineering, Nankai University, Tianjin 300350, PR China.

Abstract

Rare-earth-containing ultrastable Y zeolite (ReUSY) was modified by oxalic acid solution leaching treatment and applied in industrial units for catalytic olefin removal from aromatic hydrocarbons. The porous structure and amount of acidity of the modified ReUSY (denoted as ReUSY-x, where x indicated the amount of oxalic acid in solution) could be tuned by different concentrations of oxalic acid solution, and the ReUSY-x samples exhibited different catalytic performances. Based on the best catalytic performance of ReUSY-25, an industrial catalyst was prepared and applied in industrial units for catalytic olefin removal. The industrial catalyst exhibited excellent activity and regeneration stability with a long lifetime of about 2 years, which was about 13 times longer than that of activated clay.