Effect of Extraframework Aluminum of USY Zeolite on Sulfur Tolerance of Pd-Pt/USY Catalyst

Takehisa Mochizuki; Makoto Toba; Yoshihiro Morita; Yuji Yoshimura

doi:10.1627/jpi.51.315

Letter

Effect of Extraframework Aluminum of USY Zeolite on Sulfur Tolerance of Pd-Pt/USY Catalyst

Takehisa Mochizuki, Makoto Toba, Yoshihiro Morita, Yuji Yoshimura

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Keywords: Extraframework aluminum, Delaminated USY zeolite, Palladium platinum catalyst, EDTA pretreatment, Sulfur tolerance

JOURNAL FREE ACCESS

2008 Volume 51 Issue 5 Pages 315-316

DOI https://doi.org/10.1627/jpi.51.315

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Abstract

A series of bimetallic Pd-Pt (mole ratio Pd:Pt=4:1) catalysts supported on ultrastable Y (USY) zeolites and delaminated USY zeolites were prepared and characterized by XRD, ²⁷Al MAS NMR and CO adsorption. The extraframework aluminum (EFAL) contributed to the increases in acidity of USY zeolites and in sulfur tolerance of Pd-Pt particles.

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