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Effect of hydrochlorination and hydrofluorination of Pt/H-ZSM-5 and Pt–Ir/H-ZSM-5 catalysts for n-hexane hydroconversion

Paper ID Volume ID Publish Year Pages File Format Full-Text
43219 45958 2008 7 PDF Available
Title
Effect of hydrochlorination and hydrofluorination of Pt/H-ZSM-5 and Pt–Ir/H-ZSM-5 catalysts for n-hexane hydroconversion
Abstract

Pt/H-ZSM-5 and Pt–Ir/H-ZSM-5 catalysts were hydrochlorinated or hydrofluorinated with 3.0 wt%HCl or HF, respectively. These mono- and bimetallic catalysts were tested for n-hexane hydroconversion in a pulsed microcatalytic reactor in a flow of H2 gas. The catalysts were characterized via XRD, metal dispersion via H2 chemisorption and acid site strength distribution using temperature programmed desorption of ammonia (TPD). Although metallic promoters frequently cause inhibition of the catalytic activities of Pt and since iridium is less active than platinum, fortunately, Ir was found to enhance the hydroconversion activities of the current catalysts, particularly after hydrochlorination.

Graphical abstractPt and Pt–Ir/H-ZSM-5 catalysts doped with HCl or HF were used to produce iso-C6 and benzene from n-C6. HCl was enhancing, but HF was inhibiting.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
n-Hexane; Hydroconversion; Hydroisomerization; Hydrocracking; Dehydrocyclization; Hydrochlorinated; Hydrofluorinated; Platinum; Iridium; H-ZSM-5 zeolite
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Effect of hydrochlorination and hydrofluorination of Pt/H-ZSM-5 and Pt–Ir/H-ZSM-5 catalysts for n-hexane hydroconversion
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 334, Issues 1–2, 1 January 2008, Pages 304–310
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us