DAY-60 Zeolite Catalyst

Zeolite catalyst DAY-30 or DAY-30 molecular sieve, is a kind of Dealuminated Ammonium Y-type (DAY) molecular sieve, with a high silica-to-alumina ratio of typically 60. It is essentially an USY molecular sieve. DAY-60 maintains the FAU topology and three-dimensional macropore structure with a pore size of approximately 0.74 nm, and generally presents as a white powder.

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Introduction

DAY-60 Zeolite Catalyst

DAY-60 zeolite catalyst features lower aluminum content and a more robust, stable framework than DAY-30, delivering a superior balance between acidic properties and hydrothermal stability. It possesses a relatively high silica-to-alumina ratio, which endows DAY-60 with fewer acidic sites and moderate acid strength. Its deeply dealuminated framework enhances structural stability, granting DAY-60 zeolite excellent hydrothermal resistance and strong tolerance to FCC regeneration conditions at temperatures above 700℃.

In addition, the DAY-60 zeolite catalyst owns a macroporous structure that adapts well to large molecule reactions in heavy oil cracking. Its optimized pore system partially generates secondary mesopores, effectively boosting molecular diffusion efficiency. Essentially, DAY-60 is a high silica USY zeolite catalyst modified via dealumination and stabilization treatments.

As a mainstream FCC catalyst, DAY-60 zeolite primarily functions in fluid catalytic cracking processes to raise the yield of gasoline and light olefins and strengthen metal contamination resistance. It also acts as an acidic support to provide cracking performance in hydrocracking reactions. Furthermore, DAY-60 molecular sieve presents prominent application value in advanced petrochemical processing, including heavy oil conversion and diesel quality upgrading.

Technical Specification

Type	DAY-60
Crystal Structure	FAU
Apprearance	White powder
SiO₂/Al₂O₃(mol/mol)	50~70
BET Surface Area(m²/g)	≥ 650
Relative Crystallinity(%)	≥85
D50(μm)	≤10
Loss on Ignition(550℃,wt%)	≤5
Na₂O(wt%)	≤0.05