Metal Chloride-Functionalized Ionic Liquids for Highly Efficient H <sub> <b>2</b> </sub> S Conversion into Value-Added Elemental Sulfur: A Comprehensive Optimization Study and Techno-Economic Analysis
The efficient transformation of hydrogen sulfide (H2S) into valuable elemental sulfur is essential for addressing economic and environmental challenges. This study introduces metal chloride-functionalized ionic liquids (ILs) as high-performance catalysts for H2S capture and conversion under mild conditions. The most effective ILs, [P66614]2[CuCl4], achieved a remarkable conversion efficiency of 97.25% at ambient conditions (25 °C, 1 bar) with the addition of N,N-dimethylformamide (DMF) as a cosolvent. The catalyst demonstrated excellent recyclability over five cycles without significant degradation. Additionally, a comprehensive techno-economic analysis (TEA) confirmed the economic feasibility (in terms of capital and operating costs) of IL-based technology featuring [P66614]2[CuCl4], as compared to conventional methods such as the Claus and LO-CAT processes, highlighting its potential for industrial applications.
Authors
- Chong Yang Chuah (ORCID: https://orcid.org/0000-0002-5687-0326)
- Mohamad Azmi Bustam (ORCID: https://orcid.org/0000-0001-8809-5013)
- Khairiraihanna Johari (ORCID: https://orcid.org/0000-0001-8153-4183)
- Muhammad Syahir Aminuddin (ORCID: https://orcid.org/0000-0002-8366-5707)
Institutions
- Universiti Teknologi Petronas (MY)
- University of Malaya (MY)
- Centre for Sustainable Energy (GB)
Publication Details
- Journal
- Industrial & Engineering Chemistry Research
- Published
- 2025-06-22
- DOI
- https://doi.org/10.1021/acs.iecr.5c01441
- Citations
- 2
- Primary Topic
- Sulfur-Based Synthesis Techniques
- Type
- article
- Field-Weighted Citation Impact
- 1.87
Funders
- Universiti Teknologi Petronas
- Murata Science Foundation