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Liang S, Peng B, Liu S, Zhang W, Guo M, Cheng F, Zhang M. Low-Temperature Highly Efficient and Selective Removal of H 2S over Three-Dimensional Zn-Cu-Based Materials in an Anaerobic Environment. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:5964-5972. [PMID: 32324403 DOI: 10.1021/acs.est.0c00503] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this study, novel three-dimensional ribbon-like composite materials have been introduced for selectively capturing H2S in a low-temperature dry anaerobic environment. First, a ribbon-like basic copper carbonate precursor with Zn doping supported on the activated semicoke (ASC) was successfully synthesized in situ by a two-step hydrothermal method for the first time. The porous Zn-Cu materials obtained after calcination were applied as a sorbent to remove H2S under anaerobic conditions at a low temperature. Effects of the heat treatment temperature, Cu loading content, and Zn doping content on the anaerobic desulfurization performance of Zn-doped CuOx/ASC sorbents were investigated. The optimal Zn-doped CuOx/ASC sorbent showed a satisfactory activity and selectivity to capture H2S efficiently with a breakthrough capacity of 126 mg/g. Further mechanism study demonstrates that the super desulfurization performance of this sorbent is mainly attributed to abundant pore distribution, the synergistic effect between copper and zinc, the extensive surface active oxygen, and so forth.
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Affiliation(s)
- Shuoyang Liang
- State Key Laboratory of Advanced Metallurgy, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Bo Peng
- State Key Laboratory of Advanced Metallurgy, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Shiye Liu
- State Key Laboratory of Advanced Metallurgy, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Weidong Zhang
- Shougang Research Institute of Technology, Beijing 100043, China
| | - Min Guo
- State Key Laboratory of Advanced Metallurgy, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Fangqin Cheng
- Shanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes in Shanxi University, Taiyuan 030006, China
| | - Mei Zhang
- State Key Laboratory of Advanced Metallurgy, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
- Shanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes in Shanxi University, Taiyuan 030006, China
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Removal of Hydrogen Sulfide From Various Industrial Gases: A Review of The Most Promising Adsorbing Materials. Catalysts 2020. [DOI: 10.3390/catal10050521] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
The separation of hydrogen sulfide (H2S) from gas streams has significant economic and environmental repercussions for the oil and gas industries. The present work reviews H2S separation via nonreactive and reactive adsorption from various industrial gases, focusing on the most commonly used materials i.e., natural or synthetic zeolites, activated carbons, and metal oxides. In respect to cation-exchanged zeolites, attention should also be paid to parameters such as structural and performance regenerability, low adsorption temperatures, and thermal conductivities, in order to create more efficient materials in terms of H2S adsorption. Although in the literature it is reported that activated carbons can generally achieve higher adsorption capacities than zeolites and metal oxides, they exhibit poor regeneration potential. Future work should mainly focus on finding the optimum temperature, solvent concentration, and regeneration time in order to increase regeneration efficiency. Metal oxides have also been extensively used as adsorbents for hydrogen sulfide capture. Among these materials, ZnO and Cu–Zn–O have been studied the most, as they seem to offer improved H2S adsorption capacities. However, there is a clear lack of understanding in relation to the basic sulfidation mechanisms. The elucidation of these reaction mechanisms will be a toilsome but necessary undertaking in order to design materials with high regenerative capacity and structural reversibility.
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Martínez-Ahumada E, López-Olvera A, Jancik V, Sánchez-Bautista JE, González-Zamora E, Martis V, Williams DR, Ibarra IA. MOF Materials for the Capture of Highly Toxic H2S and SO2. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00735] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eva Martínez-Ahumada
- Laboratorio de Fisicoquímica y Reactividad de Superficies, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, C.P. 04510, Coyoacán, Ciudad de México, México
| | - Alfredo López-Olvera
- Laboratorio de Fisicoquímica y Reactividad de Superficies, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, C.P. 04510, Coyoacán, Ciudad de México, México
| | - Vojtech Jancik
- Centro Conjunto de Investigaciones en Química Sustentable UAEM-UNAM, Carr. Toluca-Atlacomulco Km 14.5, Toluca, Estado de México 50200, México
- Universidad Nacional Autónoma de México, Instituto de Química, Ciudad Universitaria, Ciudad de México 04510, México
| | - Jonathan E. Sánchez-Bautista
- Laboratorio de Fisicoquímica y Reactividad de Superficies, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, C.P. 04510, Coyoacán, Ciudad de México, México
| | - Eduardo González-Zamora
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Col. Vicentina, C. P. 09340, Ciudad de México, México
| | - Vladimir Martis
- Surface Measurement Systems, Unit 5, Wharfside, Rosemont Road, London HA0 4PE, U.K
| | - Daryl R. Williams
- Surfaces and Particle Engineering Laboratory (SPEL), Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Ilich A. Ibarra
- Laboratorio de Fisicoquímica y Reactividad de Superficies, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, C.P. 04510, Coyoacán, Ciudad de México, México
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