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Burgun U, Zonouz HR, Okutan H, Atakül H, Senkan S, Sarioglan A, Gumuslu Gur G. Effects of Rare Earth Metal Promotion over Zeolite-Supported Fe-Cu-Based Catalysts on the Light Olefin Production Performance in Fischer-Tropsch Synthesis. ACS OMEGA 2023; 8:648-662. [PMID: 36643472 PMCID: PMC9835664 DOI: 10.1021/acsomega.2c05795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 12/14/2022] [Indexed: 06/17/2023]
Abstract
Fischer-Tropsch synthesis (FTS), a significant reaction for effective H2 utilization, is a promising approach for direct production of light olefins from syngas (H2 + CO). For the FT-Olefin process, an efficient catalyst restricting the product distribution of FTS to light olefins is required. Aligned with this goal, we synthesized 24 catalysts comprising Fe and Cu in combination with rare earth metals (La, Ce, Nd, Ho, Er) and zeolite supports (ultrastable Y and mordenite). FT-Olefin performances of these catalysts were screened using a high-throughput test system at atmospheric pressure, and then promising catalysts were tested under high pressure in a conventional test system. Results show that Nd increases selectivity to light olefins and Ho suppresses C5+ and coke formation. It is also demonstrated that zeolite-metal interaction, leading to a mixture of both acidic and basic sites, is significant in increasing light olefin production. The mordenite-supported 20 wt % Fe, 0.5 wt % Cu, and 0.5 wt % Ho catalyst provides the highest light olefin yield with the lowest coke and heavier hydrocarbon selectivity.
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Affiliation(s)
- Utku Burgun
- Chemical
Engineering Department, Istanbul Technical
University, 34469Istanbul, Turkey
- ITU
Synthetic Fuels and Chemicals Technology Center, ITU-SENTEK, 34469Istanbul, Turkey
| | - Hadi R. Zonouz
- Chemical
Engineering Department, Istanbul Technical
University, 34469Istanbul, Turkey
- ITU
Synthetic Fuels and Chemicals Technology Center, ITU-SENTEK, 34469Istanbul, Turkey
| | - Hasancan Okutan
- Chemical
Engineering Department, Istanbul Technical
University, 34469Istanbul, Turkey
- ITU
Synthetic Fuels and Chemicals Technology Center, ITU-SENTEK, 34469Istanbul, Turkey
| | - Hüsnü Atakül
- Chemical
Engineering Department, Istanbul Technical
University, 34469Istanbul, Turkey
- ITU
Synthetic Fuels and Chemicals Technology Center, ITU-SENTEK, 34469Istanbul, Turkey
| | - Selim Senkan
- ITU
Synthetic Fuels and Chemicals Technology Center, ITU-SENTEK, 34469Istanbul, Turkey
- Chemical
and Biomolecular Engineering Department, University of California, Los Angeles, Los Angeles, California90095, United States
| | - Alper Sarioglan
- Chemical
Engineering Department, Istanbul Technical
University, 34469Istanbul, Turkey
- ITU
Synthetic Fuels and Chemicals Technology Center, ITU-SENTEK, 34469Istanbul, Turkey
| | - Gamze Gumuslu Gur
- Chemical
Engineering Department, Istanbul Technical
University, 34469Istanbul, Turkey
- ITU
Synthetic Fuels and Chemicals Technology Center, ITU-SENTEK, 34469Istanbul, Turkey
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Bai J, Qin C, Xu Y, Xu D, Ding M. Preparation of Nitrogen Doped Biochar-Based Iron Catalyst for Enhancing Gasoline-Range Hydrocarbons Production. ACS APPLIED MATERIALS & INTERFACES 2022; 14:45516-45525. [PMID: 36173040 DOI: 10.1021/acsami.2c14675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Developing catalysts to obtain high space time yield (STY) of gasoline-range hydrocarbons via Fischer-Tropsch synthesis (FTS) is a huge challenge due to the restriction of Anderson-Schulz-Flory distribution. Herein, a nitrogen doped biochar-based iron catalyst was synthesized by a one-step method using sugar cane bagasse as carbon precursor, which exhibited an excellent gasoline STY of 8.65 gC5-12 gFe-1 h-1, exceeding most reported catalysts. A strong positive relationship between the amount of pyrrolic N and long-chain hydrocarbons selectivity was displayed. The characterization results indicated that pyrrolic N configuration on anchor sites tuned effectively the dispersion of iron species and metal-support interaction as well as CO adsorption, improving the FTS performance.
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Affiliation(s)
- Jingyang Bai
- School of Power and Mechanical Engineering, The Institute of Technological Sciences, Wuhan University, Wuhan 430072, China
| | - Chuan Qin
- School of Power and Mechanical Engineering, The Institute of Technological Sciences, Wuhan University, Wuhan 430072, China
| | - Yanfei Xu
- School of Power and Mechanical Engineering, The Institute of Technological Sciences, Wuhan University, Wuhan 430072, China
| | - Di Xu
- School of Power and Mechanical Engineering, The Institute of Technological Sciences, Wuhan University, Wuhan 430072, China
| | - Mingyue Ding
- School of Power and Mechanical Engineering, The Institute of Technological Sciences, Wuhan University, Wuhan 430072, China
- Shenzhen Research Institute of Wuhan University, Shenzhen 518108, China
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Direct Construction of K-Fe3C@C Nanohybrids Utilizing Waste Biomass of Pomelo Peel as High-Performance Fischer–Tropsch Catalysts. Catalysts 2022. [DOI: 10.3390/catal12050542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
As the only renewable organic carbon source, abundant biomass has long been established and developed to mass-produce functionalized carbon materials. Herein, an extremely facile and green strategy was executed for the first time to in situ construct K-Fe3C@C nanohybrids directly by one-pot carbonizing the pomelo peel impregnated with Fe(NO3)3 solutions. The pyrolytically self-assembled nanohybrids were successfully applied in Fischer–Tropsch synthesis (FTS) and demonstrated high catalytic performance. Accordingly, the optimized K-Fe3C@C catalysts revealed excellent FTS activity (92.6% CO conversion) with highlighted C5+ hydrocarbon selectivity of 61.3% and light olefin (C2-4=) selectivity of 26.0% (olefin/paraffin (O/P) ratio of 6.2). Characterization results further manifest that the high performance was correlated with the in situ formation of the core-shell nanostructure consisting of Fe3C nanoparticles enwrapped by graphitized carbon shells and the intrinsic potassium promoter originated in pomelo peel during high-temperature carbonization. This work provided a facile approach for the low-cost mass-fabrication of high-performance FTS catalysts directly utilizing waste biomass without any chemical pre-treatment or purification.
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