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Jiang H, Zhang J, Shao J, Fan T, Li J, Agblevor F, Song H, Yu J, Yang H, Chen H. Desulfurization and upgrade of pyrolytic oil and gas during waste tires pyrolysis: The role of metal oxides. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 182:44-54. [PMID: 38636125 DOI: 10.1016/j.wasman.2024.04.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 02/20/2024] [Accepted: 04/10/2024] [Indexed: 04/20/2024]
Abstract
Pyrolysis can effectively convert waste tires into high-value products. However, the sulfur-containing compounds in pyrolysis oil and gas would significantly reduce the environmental and economic feasibility of this technology. Here, the desulfurization and upgrade of waste tire pyrolysis oil and gas were performed by adding different metal oxides (Fe2O3, CuO, and CaO). Results showed that Fe2O3 exhibited the highest removal efficiency of 87.7 % for the sulfur-containing gas at 600 °C with an outstanding removal efficiency of 99.5 % for H2S. CuO and CaO were slightly inferior to Fe2O3, with desulfurization efficiencies of 75.9 % and 45.2 % in the gas when added at 5 %. Fe2O3 also demonstrated a notable efficacy in eliminating benzothiophene, the most abundant sulfur compound in pyrolysis oil, with a removal efficiency of 78.1 %. Molecular dynamics simulations and experiments showed that the desulfurization mechanism of Fe2O3 involved the bonding of Fe-S, the breakage of C-S, dehydrogenation and oxygen migration process, which promoted the conversion of Fe2O3 to FeO, FeS and Fe2(SO4)3. Meanwhile, Fe2O3 enhanced the cyclization and dehydrogenation reaction, facilitating the upgrade of oil and gas (monocyclic aromatics to 57.4 % and H2 to 22.3 %). This study may be helpful for the clean and high-value conversion of waste tires.
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Affiliation(s)
- Hao Jiang
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, Hubei Province, China; Department of New Energy Science and Engineering, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, Hubei Province, China.
| | - Junjie Zhang
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, Hubei Province, China; Department of New Energy Science and Engineering, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, Hubei Province, China.
| | - Jingai Shao
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, Hubei Province, China; Department of New Energy Science and Engineering, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, Hubei Province, China.
| | - Tingting Fan
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, Hubei Province, China; Department of New Energy Science and Engineering, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, Hubei Province, China.
| | - Jianfen Li
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, Hubei, China.
| | - Foster Agblevor
- USTAR Bioenergy Center, Department of Biological Engineering, Utah State University, Logan, 84341, UT, United States.
| | - Hao Song
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, Hubei Province, China.
| | - Jie Yu
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, Hubei Province, China.
| | - Haiping Yang
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, Hubei Province, China.
| | - Hanping Chen
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, Hubei Province, China; Department of New Energy Science and Engineering, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, Hubei Province, China.
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Tiwari A, Fernandes RS, Dey N, Kanungo S. Comparative Analysis of the Hydrazine Interaction with Arylene Diimide Derivatives: Complementary Approach Using First Principles Calculation and Experimental Confirmation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:10966-10979. [PMID: 38748624 DOI: 10.1021/acs.langmuir.4c00331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Suitable functional group-engineered π-conjugated aromatic dimides based on perylene (PDI) and naphthyl scaffolds (NDI) demonstrated excellent sensitivity toward different gaseous analytes. However, to date, no methodical analysis has been performed to rationalize molecular-level interactions in the context of optical transduction, which is essential for systematic performance optimization of NDI/PDI-based molecular sensors. Therefore, in this present work, NDI/PDI scaffolds have been designed with amino acid functional groups (alanine, ALA and glutamic acid, GLU) at the terminal positions, and we subsequently compared the efficacy of four different imide derivatives as model hosts for hydrazine adsorption. Specifically, the adsorption of hydrazine at different interaction sites has been thoroughly investigated using ab initio calculations, where the adsorption energy, charge transfer, and recovery time have been emphasized. Theoretical results exhibit that irrespective of host specification the COOH groups offer a primary interaction site for hydrazine through the hydrogen bonding interaction. The presence of more COOH groups and relatively stronger interaction with secondary edge oxygen ensure that GLU functional moieties are a superior choice over ALU for efficient hydrazine binding. The molecular energy spectrum analysis exhibits more favorable HOMO/LUMO gap variations after hydrazine interaction in the case of PDI derivatives irrespective to the nature of the amino acid residues. Therefore, by a combination of both factors, PDI-GLU has been identified as the most suitable host molecule for hydrazine among four derivatives. Finally, the key theoretical predictions has been later experimentally validated by analyzing UV-visible spectroscopy and NMR studies, wherein the mechanism of interaction has also been experimentally verified by EPR analysis and FT-IR studies.
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Affiliation(s)
- Aditya Tiwari
- Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Rikitha S Fernandes
- Department of Chemistry, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Nilanjan Dey
- Department of Chemistry, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Sayan Kanungo
- Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad 500078, India
- Materials Center for Sustainable Energy & Environment, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad 500078, India
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Barbosa FF, Tavares JE, Albuquerque ADR, Morales Torres MA, Rodríguez-Castellón E, Pergher SBC, Braga TP. Catalytic dehydration of glycerol over Cu-Fe-Al-based oxides: understanding changes in active sites throughout the reaction. RSC Adv 2023; 13:31182-31200. [PMID: 37881763 PMCID: PMC10594406 DOI: 10.1039/d3ra05454c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 10/18/2023] [Indexed: 10/27/2023] Open
Abstract
The glycerol conversion into acetol using Fe, Al and Cu-based oxides was investigated. XRD results indicate the formation of nanosized particles with high phase dispersion, however, Raman, Mössbauer, 27Al NMR and XPS spectroscopies suggest the presence of iron(iii) oxide, Al2O3 and CuO phases. The FTIR with pyridine adsorption revealed high Lewis acidity. The TPR profile showed the reduction temperature range for the Fe3+ and Cu2+ sites, indicating the suitable condition for pretreatment. The N2 adsorption-desorption isotherms indicated the presence of micro-mesopores with interesting textural properties and specific area varying between 71 and 220 m2 g-1, while the porous morphology was observed by SEM and TEM images. The optimized catalytic tests showed glycerol conversion of 60% and acetol selectivity of 92% with 17% of coke according to TG profile. The recycling tests confirmed the efficiency of the solid, reaching 28% conversion and 91% acetol selectivity after four reuses and, after reactivation in an oxidizing atmosphere, the catalytic performance obtained results close to the second reuse. The interaction between the different Lewis acid sites involved in the mechanisms for the acetol and coke formation on the catalyst surface is discussed. The charge distribution represented by colors which indicates the acid-base surface was evaluated by a simple theoretical-computational study based on the DFT approach. The synergy between the active sites indicates that the presence of Cu0/Cu+ drastically increases the acetol selectivity which is a more important characteristic than the high Lewis acidity of Fen+ and Al3+.
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Affiliation(s)
- Felipe Fernandes Barbosa
- Laboratório de Peneiras Moleculares, Instituto de Química, Universidade Federal do Rio Grande do Norte 59078-970 Natal RN Brazil +55-84-3342-2323
| | - João Edson Tavares
- Instituto de Química, Universidade Federal do Rio Grande do Norte 59078-970 Natal RN Brazil
| | | | | | - Enrique Rodríguez-Castellón
- Departamento de Química Inorgánica, Cristalografía y Mineralogía, Facultad de Ciencias, Universidad de Málaga 29071 Málaga Spain
| | - Sibele B C Pergher
- Laboratório de Peneiras Moleculares, Instituto de Química, Universidade Federal do Rio Grande do Norte 59078-970 Natal RN Brazil +55-84-3342-2323
| | - Tiago Pinheiro Braga
- Laboratório de Peneiras Moleculares, Instituto de Química, Universidade Federal do Rio Grande do Norte 59078-970 Natal RN Brazil +55-84-3342-2323
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