TY - JOUR
T1 - Elucidating the interaction of FCC catalyst components
T2 - The discrete roles of matrix and binder on zeolite structure
AU - Etim, Ubong J.
AU - Bai, Peng
AU - Subhan, Fazle
AU - Yan, Zifeng
N1 - Publisher Copyright:
© 2024 IUPAC & De Gruyter 2024.
PY - 2024
Y1 - 2024
N2 - Zeolite Y is the active phase of the modern fluid catalytic cracking (FCC) catalyst. However, a functional and active FCC catalyst comprises, in addition to zeolite Y, matrices and a binder that introduce some levels of synergistic interaction between the catalyst components, impacting its activity. This study investigates the interactive properties of a zeolite-matrix-binder composite on a typical FCC catalyst using various characterization techniques. Characterization of synthesized FCC catalyst samples reveals changes in the structural composition of zeolite Y dependent upon the type and ratio of binder materials. The binder is important in the crystallization of the final composite. Acidic binder induces dealumination of zeolite, leading to amorphization, loss of Brønsted acid sites, framework structure impairment, and the formation of defective sites. TEM indicates the formation of zeolite-matrix interfaces upon binding of zeolite by the matrix. Depending on the extent and severity of thermal processing, the clay-alumina-silica binder undergoes dehydroxylation to varying degrees by cross-linking of terminal hydroxyl groups between neighboring binder particles, which contributes to the increased thermal and mechanical stability of the bound catalysts.
AB - Zeolite Y is the active phase of the modern fluid catalytic cracking (FCC) catalyst. However, a functional and active FCC catalyst comprises, in addition to zeolite Y, matrices and a binder that introduce some levels of synergistic interaction between the catalyst components, impacting its activity. This study investigates the interactive properties of a zeolite-matrix-binder composite on a typical FCC catalyst using various characterization techniques. Characterization of synthesized FCC catalyst samples reveals changes in the structural composition of zeolite Y dependent upon the type and ratio of binder materials. The binder is important in the crystallization of the final composite. Acidic binder induces dealumination of zeolite, leading to amorphization, loss of Brønsted acid sites, framework structure impairment, and the formation of defective sites. TEM indicates the formation of zeolite-matrix interfaces upon binding of zeolite by the matrix. Depending on the extent and severity of thermal processing, the clay-alumina-silica binder undergoes dehydroxylation to varying degrees by cross-linking of terminal hydroxyl groups between neighboring binder particles, which contributes to the increased thermal and mechanical stability of the bound catalysts.
KW - 8th ACS Nigerian Chapter Symposium
KW - African Early Career Chemists Workshop
KW - FCC catalyst
KW - binder
KW - composite catalyst
KW - interaction
KW - zeolite structure
UR - http://www.scopus.com/inward/record.url?scp=85189655962&partnerID=8YFLogxK
U2 - 10.1515/pac-2024-0111
DO - 10.1515/pac-2024-0111
M3 - 文章
AN - SCOPUS:85189655962
SN - 0033-4545
JO - Pure and Applied Chemistry
JF - Pure and Applied Chemistry
ER -