Desulfurization of 2-phenylcyclohexanethiol over Pd and Pt catalysts on γ-Al₂O₃
METADATA ONLY
Loading...
Author / Producer
Date
2023-12
Publication Type
Journal Article
ETH Bibliography
yes
Citations
Altmetric
METADATA ONLY
Data
Rights / License
Abstract
The desulfurization of 2-phenylcyclohexanethiol (2-PCHT) was studied over Pd and Pt catalysts supported on γ-Al₂O₃ under 5.0 MPa H₂ or Ar at 240 °C. The infrared spectra of the two catalysts during the reactions of 2-PCHT (PCHT-IR) were measured between 180 and 300 °C at 0.2 MPa H₂ and Ar. The hydrodesulfurization (HDS) of 2-PCHT over Pd/Al₂O₃ and Pt/Al₂O₃ followed pseudo-first-order kinetics, and occurred mainly through β-elimination. Pd/Al₂O₃ was more active than Pt/Al₂O₃, mainly due to its higher β-elimination activity. Piperidine showed different inhibiting effects on their HDS performances. The species adsorbed on Pd/Al₂O₃ and Pt/Al₂O₃ were different under H₂. Strong adsorption of 1-phenyl-1-cyclohexene on both catalysts was observed under Ar, which could be responsible for Langmuir-Hinshelwood kinetics and low activities. Pd/Al₂O₃ and Pt/Al₂O₃ were less active than transition-metal phosphides in the HDS of 2-PCHT, but were more active than the Mo-based sulfides.
Permanent link
Publication status
published
External links
Editor
Book title
Journal / series
Volume
428
Pages / Article No.
115198
Publisher
Elsevier
Event
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
2-Phenylcyclohexanethiol; Cycloalkyl C–S bond; Desulfurization; Pd; Pt; Infrared