Sulfur production from smelter off-gas using CO-H2 gas mixture as the reducing agent over modified Fe/γ-Al2O3 catalysts

Tingting Ge; Cuncun Zuo; Lubin Wei; Chunshan Li

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Sulfur production from smelter off-gas using CO-H₂ gas mixture as the reducing agent over modified Fe/γ-Al₂O₃ catalysts

Catalysis, Kinetics and Reaction Engineering | Updated：2026-01-06

- Sulfur production from smelter off-gas using CO-H₂ gas mixture as the reducing agent over modified Fe/γ-Al₂O₃ catalysts
- Chinese Journal of Chemical Engineering Vol. 26, Issue 9, Pages: 1920-1927(2018)
- Affiliations：
  
  1. 2 Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, The National Key Laboratory of Clean and Efficient Coking Technology, Institute of Process Engineering, Chinese Academy of Sciences,Beijing,China,100190
  2. 3 College of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences,Beijing,China,100190
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2018
- Accepted：
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gas mixture as the reducing agent over modified Fe/γ-Al
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摘要

Abstract

A series of modified γ-Al

supported iron-based catalysts (M-Fe/γ-Al

) was developed to reduce SO

in actual smelter off-gases using CO-H

gas mixture as reducing agent for sulfur production. Used as modifiers

three metal additives-Ni

and Ce were added to Fe/γ-Al

catalysts. Changes in catalyst structure and active phase were characterized with X-ray diffraction

XPS

SEM

and EDS. The reduction ability of catalysts was exhibited via CO-TPR. The prepared catalysts only need to be pre-reacted for a period of time

eliminating the need for presulfidation treatment. Reaction conditions were optimized in a fixed bed reactor to achieve high SO

conversion and sulfur selectivity. XRD characterization was carried out to verify the resulting sulfur products. Combining in situ infrared characterization and catalyst evaluation of support and active component

the reaction mechanism was investigated and proposed.

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