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Autothermal reforming of simulated and commercial diesel: The performance of zirconia-supported RhPt catalyst in the presence of sulfur

Paper ID Volume ID Publish Year Pages File Format Full-Text
47925 46485 2008 8 PDF Available
Title
Autothermal reforming of simulated and commercial diesel: The performance of zirconia-supported RhPt catalyst in the presence of sulfur
Abstract

Simulated and commercial low-sulfur diesel fuels (S < 10 ppm) were studied in autothermal reforming (ATR) on Rh and Pt and bimetallic RhPt catalysts supported on ZrO2 with the aim of obtaining fuel gas suitable for solid oxide fuel cell applications.In ATR of the simulated fuels, the catalysts deactivated markedly in the presence of H2S, whereas in ATR of simulated fuels in the presence of 4,6-dimethyldibenzothiophene (4,6-DMDBT) and in ATR of commercial diesel the catalyst deactivated only slightly over several hours. In view of its different effect, H2S cannot be considered a suitable model compound for heterocyclic sulfur compounds present in commercial low-sulfur fuels.In ATR of commercial low-sulfur diesel, carbon formation increased with the Pt loading, whereas sulfur deposition on the catalyst was strongest on the monometallic Rh/ZrO2. Furthermore, less carbon was deposited on the RhPt catalyst in the presence than absence of H2S, as sulfur blocked the catalyst active sites. The catalyst could be reactivated by stopping the H2S flow.

Keywords
Autothermal reforming; Solid oxide fuel cell; Low-sulfur diesel; 4,6-DMDBT; H2S adsorption; RhPt/ZrO2 catalyst
First Page Preview
Autothermal reforming of simulated and commercial diesel: The performance of zirconia-supported RhPt catalyst in the presence of sulfur
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 84, Issues 1–2, 25 October 2008, Pages 324–331
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis