1
|
Nor NM, Chung LL, Mohamed AR. Development of microwave-assisted nitrogen-modified activated carbon for efficient biogas desulfurization: a practical approach. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:17129-17148. [PMID: 35554814 DOI: 10.1007/s11356-022-20627-x] [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: 09/28/2021] [Accepted: 04/30/2022] [Indexed: 06/15/2023]
Abstract
Removal of H2S (hydrogen sulfide) from biogas is anticipated for higher energy conversion of methane (CH4), while reducing the detrimental impacts of corroding the metal parts in the plant and its hazardous effect on humans and the environment. The introduction of microwave (MW) heating and nitrogen-modification could generate superior adsorbent features, contributing to high H2S removal. Up to date, there is no work reported on the influence of physicochemical characteristics of nitrogen-modified carbon synthesized via MW and conventional heating (TH) methods and their performance in H2S removal. Palm shell activated carbon (PSAC) was functionalized with nitrogen groups via urea impregnation, followed by the synthesis of MW and TH at 950 °C, 500 ml/min of N2 flow rate and 30 min of heating time. MW and TH heating effects on the modified PSAC adsorbent were analysed and compared towards hydrogen sulfide (H2S) removal. PSAC with nitrogen functionalization produced using MW heating (PSAC-MW) demonstrates superior performance, with an adsorption capacity of 356.94 mg/g. The adsorbent sample generated using MW heating exhibited notable properties, including a large surface area and a sponge-like structure, with new pores developed within the current pores. Instead of that, there was an observation of 'hot spot' appearance during the MW heating process, which is believed to be responsible for the development of physical and chemical characteristics of the adsorbent. Thus, it is believed that MW heating was assisted in the development of the adsorbent's properties and at the same time contributed to the high removal of H2S at low adsorption temperature. The utilization of biomass-based adsorbent (PSAC) for H2S removal can address the lignocellulosic waste disposal problem, while mitigating the H2S release from the biogas production plants thus has several environmental merits. This indirectly contributed to zero-waste generation, while overcoming the adverse effects of H2S.
Collapse
Affiliation(s)
- Norhusna Mohamad Nor
- School of Chemical Engineering, Universiti Sains Malaysia, 14300, Nibong Tebal, Pulau Pinang, Malaysia
- Centre of Chemical Engineering, College of Engineering, Universiti Teknologi MARA, Cawangan Pulau Pinang, 13500, Permatang Pauh, Pulau Pinang, Malaysia
| | - Lau Lee Chung
- School of Chemical Engineering, Universiti Sains Malaysia, 14300, Nibong Tebal, Pulau Pinang, Malaysia
- Centre of Chemical Engineering, College of Engineering, Universiti Teknologi MARA, Cawangan Sarawak, 94300, Kota Samarahan, Sarawak, Malaysia
| | - Abdul Rahman Mohamed
- School of Chemical Engineering, Universiti Sains Malaysia, 14300, Nibong Tebal, Pulau Pinang, Malaysia.
| |
Collapse
|
2
|
Ternary metal oxide nanocomposite for room temperature H2S and SO2 gas removal in wet conditions. Sci Rep 2022; 12:15387. [PMID: 36100623 PMCID: PMC9470665 DOI: 10.1038/s41598-022-19800-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 09/05/2022] [Indexed: 11/17/2022] Open
Abstract
A ternary Mn–Zn–Fe oxide nanocomposite was fabricated by a one-step coprecipitation method for the remotion of H2S and SO2 gases at room temperature. The nanocomposite has ZnO, MnO2, and ferrites with a surface area of 21.03 m2 g−1. The adsorbent was effective in mineralizing acidic sulfurous gases better in wet conditions. The material exhibited a maximum H2S and SO2 removal capacity of 1.31 and 0.49 mmol g−1, respectively, in the optimized experimental conditions. The spectroscopic analyses confirmed the formation of sulfide, sulfur, and sulfite as the mineralized products of H2S. Additionally, the nanocomposite could convert SO2 to sulfate as the sole oxidation by-product. The oxidation of these toxic gases was driven by the dissolution and dissociation of gas molecules in surface adsorbed water, followed by the redox behaviour of transition metal ions in the presence of molecular oxygen and water. Thus, the study presented a potential nanocomposite adsorbent for deep desulfurization applications.
Collapse
|
3
|
Carbon-Rich carbon nitride nanocatalysts for H2S selective oxidation. J Catal 2022. [DOI: 10.1016/j.jcat.2022.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
4
|
Zhong Q, Liu J, Wang J, Li Y, Li J, Zhang G. Efficient degradation of organic pollutants by activated peroxymonosulfate over TiO 2@C decorated Mg-Fe layered double oxides: Degradation pathways and mechanism. CHEMOSPHERE 2022; 300:134564. [PMID: 35413370 DOI: 10.1016/j.chemosphere.2022.134564] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/28/2022] [Accepted: 04/06/2022] [Indexed: 06/14/2023]
Abstract
To activate peroxymonosulfate (PMS) is an efficient way for decomposition of non-biodegradable organic pollutants. Herein, Mg-Fe layered double oxides decorated with Ti3C2 MXene-derived TiO2@C (T/LDOs) were fabricated to efficiently activate PMS for the degradation of Rhodamine B (RhB), acid red 1 (AR1), methylene blue (MB), and tetracycline hydrochloride (TC). The T/LDOs catalyst could decompose 95.8% of RhB, 94.8% of AR1, 84.9% of MB within 10 min, and 82.4% of TC within 60 min. The degradation rate constant of RhB in the optimal T/LDOs/PMS system was approximately 2.5 and 15.7 times higher than that in the Mg-Fe LDOs/PMS system and Mg-Fe LDH/PMS system, respectively. Importantly, the T/LDOs exhibited a wide working pH range (3.1-11.0) and high stability with low metal ions leaching, indicating its potential practical applications. Quenching experiments and electronic spin resonance results confirmed that both •O2- and 1O2 were the dominant active species in the T/LDOs/PMS system. In addition, the possible degradation pathway of RhB in the 5%-T/LDOs/PMS system was proposed. Finally, the catalytic mechanism study revealed that the T/LDOs with abundant surface hydroxyl groups and a certain amount of TiO2@C facilitated the electron transfer between ≡Fe(Ⅲ)‒OH complex and HSO5-, boosting the generation of •O2- and 1O2. This study provides an insight into exploiting highly efficient catalysts for PMS activation towards the degradation of organic pollutants.
Collapse
Affiliation(s)
- Qian Zhong
- Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China
| | - Jin Liu
- Henan Key Laboratory of Rare Earth Functional Materials, Zhoukou Normal University, Zhoukou, 466001, China.
| | - Junting Wang
- Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China
| | - Yuan Li
- Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China
| | - Jun Li
- Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou, 450052, China
| | - Gaoke Zhang
- Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China; Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou, 450052, China.
| |
Collapse
|
5
|
Zhang G, Zhu Q, Zhang W, Zheng Y, Cao Y, Liang S, Xiao Y, Liu F, Jiang L. Efficiently Integrated Desulfurization from Natural Gas over Zn-ZIF-Derived Hierarchical Lamellar Carbon Frameworks. Inorg Chem 2022; 61:6083-6093. [PMID: 35404597 DOI: 10.1021/acs.inorgchem.2c00149] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Selective removal of carbonyl sulfide (COS) and hydrogen sulfide (H2S) is the key step for natural gas desulfurization due to the highly toxic and corrosive features of these gaseous sulfides, and efficient and stable desulfurizers are urgently needed in the industry. Herein, we report a class of nitrogen-functionalized, hierarchically lamellar carbon frameworks (N-HLCF-xs), which are obtained from the structural transformation of Zn zeolitic imidazolate frameworks via controllable carbonization. The N-HLCF-xs possess the desirable characteristics of large Brunauer-Emmett-Teller surface areas (645-923 m2/g), combined primary three-dimensional microporosity and secondary two-dimensional lamellar microstructure, and high density of nitrogen base sites with enhanced pyridine ratio (17.52 wt %, 59.91%). The anchored nitrogen base sites in N-HLCF-xs show improved accessibility, which boosts their interaction with acidic COS and H2S. As expected, N-HLCF-xs can be employed as multifunctional and efficient desulfurizers for selective removal of COS and H2S from natural gas. COS was first transformed into H2S via catalytic hydrolysis, and the produced H2S was then captured and separated and catalyzed oxidation into elemental sulfur. The above continuous processes can be achieved with solo N-HLCF-xs, giving extremely high efficiencies and reusability. Their integrated desulfurization performance was better than many desulfurizers used in the area, such as activated carbon, β zeolite, MIL-101(Fe), K2CO3/γ-Al2O3, and FeOx/TiO2.
Collapse
Affiliation(s)
- Guanqing Zhang
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, P.R. China
| | - Qiliang Zhu
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, P.R. China
| | - Wentao Zhang
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, P.R. China
| | - Yong Zheng
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, P.R. China.,Qingyuan Innovation Laboratory, Quanzhou, Fujian 362801, P.R. China
| | - Yanning Cao
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, P.R. China.,Qingyuan Innovation Laboratory, Quanzhou, Fujian 362801, P.R. China
| | - Shijing Liang
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, P.R. China.,Qingyuan Innovation Laboratory, Quanzhou, Fujian 362801, P.R. China
| | - Yihong Xiao
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, P.R. China.,Qingyuan Innovation Laboratory, Quanzhou, Fujian 362801, P.R. China
| | - Fujian Liu
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, P.R. China.,Qingyuan Innovation Laboratory, Quanzhou, Fujian 362801, P.R. China
| | - Lilong Jiang
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, P.R. China.,Qingyuan Innovation Laboratory, Quanzhou, Fujian 362801, P.R. China
| |
Collapse
|
6
|
Seliverstov ES, Golovin SN, Lebedeva OE. Layered Double Hydroxides Containing Rare Earth Cations: Synthesis and Applications. FRONTIERS IN CHEMICAL ENGINEERING 2022. [DOI: 10.3389/fceng.2022.867615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In this mini-review, we describe the currently available literature concerning synthesis and applications of layered double hydroxides (LDHs) containing rare earth cations (RE-LDHs), focusing on the catalytic activity of those compounds. The lack of studies of some rare earth elements (REE) and the insufficient knowledge of their catalytic activity in the structure of LDHs indicate the need for further research.
Collapse
|
7
|
Fan H, Jin Y, Liu K, Liu W. One-Step MOF-Templated Strategy to Fabrication of Ce-Doped ZnIn 2 S 4 Tetrakaidecahedron Hollow Nanocages as an Efficient Photocatalyst for Hydrogen Evolution. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2104579. [PMID: 35032106 PMCID: PMC8948573 DOI: 10.1002/advs.202104579] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/24/2021] [Indexed: 05/14/2023]
Abstract
Achieving structure optimizing and component regulation simultaneously in the ZnIn2 S4 -based photocatalytic system is an enormous challenge in improving its hydrogen evolution performance. 3D hollow-structured photocatalysts have been intensively studied due to their obvious advantages in solar energy conversion reactions. The synthesis of 3D hollow-structured ZnIn2 S4 , however, is limited by the lack of suitable template or synthesis methods, thereby restricting the wide application of ZnIn2 S4 in the field of photocatalysis. Herein, Ce-doped ZnIn2 S4 photocatalysts with hollow nanocages are obtained via one-step hydrothermal method with an ordered large-pore tetrakaidecahedron cerium-based metal-organic frameworks (Ce-MOFs) as template and Ce ion source. The doping of Ce and the formation of ZnIn2 S4 tetrakaidecahedron hollow nanocages with ultrathin nanosheet subunits are simultaneously induced by the Ce-MOFs, making this groundbreaking work. The Ce-doped ZnIn2 S4 with a nonspherical 3D hollow nanostructure inherit the tetrakaidecahedron shape of the Ce-MOF templates, and the shell is composed of ultrathin nanosheet subunits. Both theoretical and experimental results indicate that the doping of Ce and the formation of hollow nanocages increase light capture and the separation of photogenerated charge carriers.
Collapse
Affiliation(s)
- Huitao Fan
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou730000P. R. China
- College of Chemistry and Pharmaceutical EngineeringNanyang Normal UniversityNanyang473061P. R. China
| | - Yujie Jin
- College of Chemistry and Pharmaceutical EngineeringNanyang Normal UniversityNanyang473061P. R. China
| | - Kecheng Liu
- College of Chemistry and Pharmaceutical EngineeringNanyang Normal UniversityNanyang473061P. R. China
| | - Weisheng Liu
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou730000P. R. China
| |
Collapse
|
8
|
Yin M, Yun Z, Fan F, Pillai SC, Wu Z, Zheng Y, Zhao L, Wang H, Hou H. Insights into the mechanism of low-temperature H 2S oxidation over Zn-Cu/Al 2O 3 catalyst. CHEMOSPHERE 2022; 291:133105. [PMID: 34843834 DOI: 10.1016/j.chemosphere.2021.133105] [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: 08/26/2021] [Revised: 11/12/2021] [Accepted: 11/26/2021] [Indexed: 06/13/2023]
Abstract
Odor pollution caused by toxic chemicals with low human olfactory thresholds, such as hydrogen sulfide (H2S), has become a major cause of environmental grievance world-wide. Although the low-temperature (<180 °C) catalytic oxidation of H2S using metal oxides has received widespread attention, desulfurization performance is not ideal. Herein, a series of Zn-Cu/Al2O3 catalysts were developed using an impregnation method based on the Al2O3 hydrophilicity and the effects of zinc loading on the catalyst physicochemical properties and performance were systematically studied. The catalysts were characterized using inductively coupled plasma-optical emission spectrometry (ICP-OES), N2 adsorption-desorption isotherms, scanning electron microscopy with energy dispersive spectrometry (SEM-EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR) and electron paramagnetic resonance (EPR). It was found that optimization of zinc doping could improve the hydrophilicity of the catalyst, and hence its activity. Catalytic activity was also dependent on operational parameters such as temperature, humidity and space velocity. The Zn3Cu3 catalyst exhibited the highest breakthrough capacity of 353.91 mg/g at 50 °C and at a relative humidity of 50%. The excellent desulfurization performance was attributed to oxygen vacancies contributed by CuO, Cu2O and ZnO, which facilitated the conversion of H2O into hydroxyl radicals. Consequently, a hydroxyl radical-induced desulfurization mechanism over Zn-Cu/Al2O3 is proposed. This work provides a potential green and efficient catalyst for the selective oxidation of H2S.
Collapse
Affiliation(s)
- Mengxue Yin
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; College of Water Sciences, Beijing Normal University, Beijing, 100875, China
| | - Zhichao Yun
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Feiyue Fan
- Technical Centre for Soil, Agricultural and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing, 100012, China.
| | - Suresh C Pillai
- Centre for Precision Engineering, Materials and Manufacturing Research & Nanotechnology and Bio-Engineering Research Division, Department of Environmental Science, Institute of Technology Sligo, Ash Lane, Sligo, Ireland
| | - Zhihao Wu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Yan Zheng
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Long Zhao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Hailong Wang
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China
| | - Hong Hou
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
| |
Collapse
|
9
|
Abstract
Compared to the Claus process, selective H2S catalytic oxidation to sulfur is a promising reaction, as it is not subject to thermodynamic limitations and could theoretically achieve ~100% H2S conversion to sulfur. In this study, we investigated the effects of Co and Fe co-doping in ABO3 perovskite on H2S selective catalytic oxidation. A series of LaFexCo1−xO3 (x = 0, 0.2, 0.4, 0.6, 0.8, 1.0) perovskites were synthesized by the sol-gel method. Compared to LaFeO3 and LaCoO3, co-doped LaFexCo1−xO3 significantly improved the H2S conversion and sulfur selectivity at a lower reaction temperature. Nearly 100% sulfur yield was achieved on LaFe0.4Co0.6O3 under 220 °C with exceptional catalyst stability (above 95% sulfur yield after 77 h). The catalysts were characterized by XRD, BET, FTIR, XPS, and H2-TPR. The characterization results showed that the structure of LaFexCo1−xO3 changed from the rhombic phase of LaCoO3 to the cubic phase of LaFeO3 with Fe substitution. Doping with appropriate iron (x = 0.4) facilitates the reduction of Co ions in the catalyst, thereby promoting the H2S selective oxidation. This study demonstrates a promising approach for low-temperature H2S combustion with ~100% sulfur yield.
Collapse
|
10
|
Xu X, Li G, Wei Z, Zhang F, Jiang G, Cheng J, Zhang Z, Zhao Y, Hao Z. High-Temperature Selective Oxidation of H 2S to Elemental Sulfur on a β-SiC-Supported Cerium Catalyst. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01370] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Xin Xu
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China
- National Engineering Laboratory for VOCs Pollution Control Material & Technology & Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P. R. China
| | - Ganggang Li
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China
- National Engineering Laboratory for VOCs Pollution Control Material & Technology & Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P. R. China
| | - Zheng Wei
- National Engineering Laboratory for VOCs Pollution Control Material & Technology & Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P. R. China
| | - Fenglian Zhang
- National Engineering Laboratory for VOCs Pollution Control Material & Technology & Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P. R. China
| | - Guoxia Jiang
- National Engineering Laboratory for VOCs Pollution Control Material & Technology & Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P. R. China
| | - Jie Cheng
- National Engineering Laboratory for VOCs Pollution Control Material & Technology & Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P. R. China
| | - Zhongshen Zhang
- National Engineering Laboratory for VOCs Pollution Control Material & Technology & Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P. R. China
| | - Yaxu Zhao
- National Engineering Laboratory for VOCs Pollution Control Material & Technology & Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P. R. China
| | - Zhengping Hao
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China
- National Engineering Laboratory for VOCs Pollution Control Material & Technology & Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P. R. China
| |
Collapse
|
11
|
Zheng X, Cai J, Zhao W, Liang S, Zheng Y, Cao Y, Shen L, Xiao Y, Jiang L. Porous α-Fe2O3/SnO2 nanoflower with enhanced sulfur selectivity and stability for H2S selective oxidation. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.11.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
12
|
Zheng X, Zhang G, Yao Z, Zheng Y, Shen L, Liu F, Cao Y, Liang S, Xiao Y, Jiang L. Engineering of crystal phase over porous MnO 2 with 3D morphology for highly efficient elimination of H 2S. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:125180. [PMID: 33858115 DOI: 10.1016/j.jhazmat.2021.125180] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 12/27/2020] [Accepted: 01/16/2021] [Indexed: 06/12/2023]
Abstract
In the present work, we report a facile oxalate-derived hydrothermal method to fabricate α-, β- and δ-MnO2 catalysts with hierarchically porous structure and study the phase-dependent behavior for selective oxidation of H2S over MnO2 catalysts. It was disclosed that the oxygen vacancy, reducibility and acid property of MnO2 are essentially determined by the crystalline phase. Systematic experiments demonstrate that δ-MnO2 is superior in active oxygen species, activation energy and H2S adsorption capacity among the prepared catalysts. As a consequence, δ-MnO2 nanosphere with a hierarchically porous structure shows high activity and stability with almost 100% H2S conversion and sulfur selectivity at 210 °C, better than majority of reported Mn-based materials. Meanwhile, hierarchically porous structure of δ-MnO2 nanosphere alleviates the generation of by-product SO2 and sulfate, promoting the adoptability of Mn-based catalysts in industrial applications.
Collapse
Affiliation(s)
- Xiaohai Zheng
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China
| | - Guanqing Zhang
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China
| | - Zheng Yao
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China
| | - Yong Zheng
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China
| | - Lijuan Shen
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China; Fujian Key Laboratory of Pollution Control & Resource Reuse, College of Environmental Science and Engineering, Fujian Normal University, Fuzhou, Fujian 350007, PR China.
| | - Fujian Liu
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China
| | - Yanning Cao
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China
| | - Shijing Liang
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China.
| | - Yihong Xiao
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China
| | - Lilong Jiang
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China
| |
Collapse
|
13
|
Zeng F, Hu H, Lu J, Luo M, Huang H, Ding K. Performance and mechanism of hydrogen sulfide removal by sludge-based activated carbons prepared by recommended modification methods. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:31618-31629. [PMID: 33609240 DOI: 10.1007/s11356-021-12694-3] [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: 09/08/2020] [Accepted: 01/25/2021] [Indexed: 06/12/2023]
Abstract
The sludge-based activated carbons (SACs) were prepared by sewage sludge and corn straw and modified by ferric nitrate. The H2S removal performance and the desulfurization mechanism of the modified SAC were studied. Results showed that breakthrough sulfur capacity and saturation sulfur capacity of the SAC prepared by recommended modification were 27.209 mg/g and 48.098 mg/g, which were as 4.68 times and 7.02 times larger as those before modification, respectively. Additionally, results showed that the desulfurization products of unmodified SAC were mainly sulfur, while that of modified SAC were mainly sulfate. These results indicated that ferric nitrate modification changed the way of hydrogen sulfide removal by SAC: the desulfurization process of unmodified SAC can be expressed as S2- → S0 → S4+ → S6+, and the oxidative active component was dominated by O*, while that of modified SAC can be expressed as S2- → S0 → S6+, and the oxidative active components are both Fe3+ and O*.
Collapse
Affiliation(s)
- Fan Zeng
- Institute of Soil and Solid Waste Pollution Control, School of Environmental Engineering, Nanjing Institute of Technology, No. 1 Hongjing Avenue Jiangning Science Park, Nanjing, Jiangsu, People's Republic of China, CN211167.
| | - Hui Hu
- School of Environmental Science & Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wu Han, CN430074, China.
| | - Jiawei Lu
- South China Institute of Environmental Sciences, MEE, No. 7 Yuancun West Street, Tianhe District, Guangzhou, People's Republic of China, CN410665
| | - Minghan Luo
- Institute of Soil and Solid Waste Pollution Control, School of Environmental Engineering, Nanjing Institute of Technology, No. 1 Hongjing Avenue Jiangning Science Park, Nanjing, Jiangsu, People's Republic of China, CN211167
| | - Hao Huang
- School of Environmental Science & Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wu Han, CN430074, China
| | - Keqiang Ding
- Institute of Soil and Solid Waste Pollution Control, School of Environmental Engineering, Nanjing Institute of Technology, No. 1 Hongjing Avenue Jiangning Science Park, Nanjing, Jiangsu, People's Republic of China, CN211167
| |
Collapse
|
14
|
Xu C, Chen J, Li S, Gu Q, Wang D, Jiang C, Liu Y. N-doped honeycomb-like porous carbon derived from biomass as an efficient carbocatalyst for H 2S selective oxidation. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123806. [PMID: 33264908 DOI: 10.1016/j.jhazmat.2020.123806] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 07/30/2020] [Accepted: 08/21/2020] [Indexed: 06/12/2023]
Abstract
3D interconnected porous N-doped carbocatalyst derived from the waste air-laid paper plays as an efficient metal-free catalyst for H2S removal in super-Claus reaction. The honeycomb-like porous nitrogen-doped carbons are fabricated through a facile impregnation of alkaline solution and NH3 post-treatment method. The experiments prove that NH3 post-treatment is an efficient way to improve the catalytic performance, which resulting in outstanding reactivity and stability with highest sulfur formation rate of 496.6 gsulfurkgcat.-1 h-1 and sulfur yield of 86.7 % in feed gas with high concentration (ca. 10,000 ppm) of H2S for selective oxidation. Significantly, the optimized pyridinic-N content and defect degree endow the N-doped porous carbon (NPC700) with highest catalytic activity according to the Raman and XPS results. The high surface area and abundant porous structure also contribute to the high catalytic performance by increasing the exposure degree of active site and offering additional active surface. Based on the XPS, SEM, TEM and EDS mapping results, the N-doped porous carbon are proved to be stable catalysts since the morphology and surface chemical environment remain similar after the oxidative desulfurization process.
Collapse
Affiliation(s)
- Chi Xu
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China; Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian, 116023, China
| | - Jian Chen
- State Key Laboratory of Industrial Vent Gas Reuse, Southwest Research & Design Institute of Chemical Industry Co., Ltd. 393 Jindu Section, Airport Road, Chengdu, 610225, China
| | - Shiyan Li
- Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian, 116023, China
| | - Qingqing Gu
- Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian, 116023, China.
| | - Dajun Wang
- State Key Laboratory of Industrial Vent Gas Reuse, Southwest Research & Design Institute of Chemical Industry Co., Ltd. 393 Jindu Section, Airport Road, Chengdu, 610225, China
| | - Chengfa Jiang
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China.
| | - Yuefeng Liu
- Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian, 116023, China.
| |
Collapse
|
15
|
Morphology evolution of acetic acid-modulated MIL-53(Fe) for efficient selective oxidation of H2S. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63625-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
16
|
Zhang G, Kan X, Zheng Y, Cao Y, Liang S, Xiao Y, Liu F, Jiang L. A solid thermal and fast synthesis of MgAl-hydrotalcite nanosheets and their applications in the catalytic elimination of carbonyl sulfide and hydrogen sulfide. NEW J CHEM 2021. [DOI: 10.1039/d0nj05809b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
MgAl hydrotalcites with high exposed OH− sites were designed, and showed superior performance for the catalytic elimination of COS and H2S.
Collapse
Affiliation(s)
- Guanqing Zhang
- National Engineering Research Center of Chemical Fertilizer Catalyst
- College of Chemical Engineering
- Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Xun Kan
- National Engineering Research Center of Chemical Fertilizer Catalyst
- College of Chemical Engineering
- Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Yong Zheng
- National Engineering Research Center of Chemical Fertilizer Catalyst
- College of Chemical Engineering
- Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Yanning Cao
- National Engineering Research Center of Chemical Fertilizer Catalyst
- College of Chemical Engineering
- Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Shijiang Liang
- National Engineering Research Center of Chemical Fertilizer Catalyst
- College of Chemical Engineering
- Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Yihong Xiao
- National Engineering Research Center of Chemical Fertilizer Catalyst
- College of Chemical Engineering
- Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Fujian Liu
- National Engineering Research Center of Chemical Fertilizer Catalyst
- College of Chemical Engineering
- Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Lilong Jiang
- National Engineering Research Center of Chemical Fertilizer Catalyst
- College of Chemical Engineering
- Fuzhou University
- Fuzhou 350002
- P. R. China
| |
Collapse
|
17
|
Shan Y, Liu Y, Li Y, Yang W. A review on application of cerium-based oxides in gaseous pollutant purification. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117181] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
18
|
Exploring N-Containing Compound Catalyst for H2S Selective Oxidation: Case Study of TaON and Ta3N5. Catal Letters 2020. [DOI: 10.1007/s10562-020-03430-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
19
|
Zheng X, Li Y, Liang S, Yao Z, Zheng Y, Shen L, Xiao Y, Zhang Y, Au C, Jiang L. Promoting effect of Cu-doping on catalytic activity and SO2 resistance of porous CeO2 nanorods for H2S selective oxidation. J Catal 2020. [DOI: 10.1016/j.jcat.2020.06.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
20
|
Zhang F, Zhang X, Jiang G, Sun Y, Hao Z, Liu X, Qu S. Selective oxidation of H2S over Fe supported on Zr-intercalated Laponite clay mesoporous composite catalysts at low temperature. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.08.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
21
|
Zheng XX, Fang ZP, Dai ZJ, Cai JM, Shen LJ, Zhang YF, Au CT, Jiang LL. Iron-Based Metal-Organic Frameworks as Platform for H 2S Selective Conversion: Structure-Dependent Desulfurization Activity. Inorg Chem 2020; 59:4483-4492. [PMID: 32174112 DOI: 10.1021/acs.inorgchem.9b03648] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Three classical Fe-MOFs, viz., MIL-100(Fe), MIL-101(Fe), and MIL-53(Fe), were synthesized to serve as platforms for the investigation of structure-activity relationship and catalytic mechanism in the selective conversion of H2S to sulfur. The physicochemical properties of the Fe-MOFs were characterized by various techniques. It was disclosed that the desulfurization performances of Fe-MOFs with well-defined microstructures are obviously different. Among these, MIL-100(Fe) exhibits the highest catalytic performance (ca. 100% H2S conversion and 100% S selectivity at 100-180 °C) that is superior to that of commercial Fe2O3. Furthermore, the results of systematic characterization and DFT calculation reveal that the difference in catalytic performance is mainly because of discrepancy in the amount of Lewis acid sites. A plausible catalytic mechanism has been proposed for H2S selective conversion over Fe-MOFs. This work provides critical insights that are helpful for rational design of desulfurization catalysts.
Collapse
Affiliation(s)
- Xiao-Xiao Zheng
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian PR China
| | - Zhong-Pu Fang
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, PR China
| | - Zhao-Jin Dai
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian PR China
| | - Jia-Ming Cai
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian PR China
| | - Li-Juan Shen
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian PR China
| | - Yong-Fan Zhang
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, PR China
| | - Chak-Tong Au
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian PR China
| | - Li-Long Jiang
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian PR China
| |
Collapse
|
22
|
Zheng X, Li Y, Zheng Y, Shen L, Xiao Y, Cao Y, Zhang Y, Au C, Jiang L. Highly Efficient Porous FexCe1–xO2−δ with Three-Dimensional Hierarchical Nanoflower Morphology for H2S-Selective Oxidation. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05486] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xiaohai Zheng
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, P.R.China
| | - Yanli Li
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, P.R.China
| | - Yong Zheng
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, P.R.China
| | - Lijuan Shen
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, P.R.China
| | - Yihong Xiao
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, P.R.China
| | - Yanning Cao
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, P.R.China
| | - Yongfan Zhang
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, P.R.China
| | - Chaktong Au
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, P.R.China
| | - Lilong Jiang
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, P.R.China
| |
Collapse
|
23
|
Li N, Cheng J, Xing X, Li P, Hao Z. Hydrotalcite-derived Pd/Co3Mn Al1-O mixed oxides as efficient catalysts for complete oxidation of toluene. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.03.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
24
|
Sun Y, Li N, Xing X, Zhang X, Zhang Z, Wang G, Cheng J, Hao Z. Catalytic oxidation performances of typical oxygenated volatile organic compounds (acetone and acetaldehyde) over MAlO (M = Mn, Co, Ni, Fe) hydrotalcite-derived oxides. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.03.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
25
|
Guo R, Su F, Wang H, Guo Y, Yao H, Huang G, Li J, Liang Z, Shi K, Ma S. Luminescence Tuning of Layered Rare-Earth Hydroxides (LRHs, R = Tb, Y) Composites with 3-Hydroxy-2-naphthoic Acid and Application to the Fluorescent Detection of Al 3. Inorg Chem 2019; 58:4979-4988. [PMID: 30933488 DOI: 10.1021/acs.inorgchem.8b03636] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Tunable luminescence (quenching or blue shift) of HNA/OS-LRH composites (HNA is 3-hydroxy-2-naphthoic acid; OS is the anionic surfactant of 1-octanesulfonic acid sodium; LRHs are layered rare-earth hydroxides, R = Tb3+, Y3+) in the solid state and delaminated state is reported, which is utilized as an effective fluorescent probe for detecting metal ions. HNA/OS species are intercalated into LRH layers to generate composites of HNA xOS1- x-LTbH ( x = 0.10, 0.15, 0.20 , 0.25) and HNA yOS1- y-LYH ( y = 0.05, 0.10, 0.15, 0.20, 0.25, 0.30). In the solid state, LYH composites exhibit green emissions (from 493 to 504 nm) with a large blue shift in comparison to the 542 nm emission of free HNA- anions, while in the delaminated state in formamide (FM), the composites display blue emission (480 nm) relative to the green emission (512 nm) of an HNA soltuion in FM. However, LTbH composites display coquenched luminescence in both the solid state and delaminated state. Also, HNA0.25OS0.75-1:1-LYH, HNA0.25OS0.75-1:2-LYH, and HNA0.05OS0.95-1:1-LYH (1:1 and 1:2 are HNA:NaOH molar ratios) show significantly elongated fluorescence lifetimes of 15.35, 14.37, and 12.72 ns, respectively, in comparison with free HNA-Na (6.44 ns), and their quantum yields of 23.40%, 21.97%, and 22.31%, respectively, are much larger than that of free HNA-Na (4.86%). The LTbH composite (HNA0.25OS0.75-1:1-LTbH) has also a relatively higher quantum yield of 12.46%. The HNA0.25OS0.75-1:1-LYH colloid exhibits excellent recognition selectivity for Al3+ over other metal ions (Mg2+, Co2+, Ni2+, Cu2+, Zn2+, Pb2+, Cd2+, and Hg2+) with distinct fluorescence sensitization. It shows an intense change in its fluorescence emission when it is bound to Al3+ ions, giving a lower detection limit of 6.32 × 10-6 M. This is novel research on the fluorescence chemosensing of LRH composites.
Collapse
Affiliation(s)
- Rong Guo
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry , Beijing Normal University , Beijing 100875 , People's Republic of China
| | - Feifei Su
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry , Beijing Normal University , Beijing 100875 , People's Republic of China
| | - Hui Wang
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry , Beijing Normal University , Beijing 100875 , People's Republic of China
| | - Yuexin Guo
- School of Pharmacy , North China University of Science and Technology , Tangshan 063210 , People's Republic of China
| | - Huiqin Yao
- School of Basic Medical Sciences , Ningxia Medical University , Yinchuan 750004 , People's Republic of China
| | - Gailing Huang
- School of Materials and Chemical Engineering , Zhengzhou University of Light Industry , Zhengzhou 450001 , People's Republic of China
| | - Jian Li
- Chemistry & Chemical and Environmental Engineering College , Weifang University , Weifang 261061 , People's Republic of China
| | - Zupei Liang
- Chemistry & Chemical and Environmental Engineering College , Weifang University , Weifang 261061 , People's Republic of China
| | - Keren Shi
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering , Ningxia University , Yinchuan 750021 , People's Republic of China
| | - Shulan Ma
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry , Beijing Normal University , Beijing 100875 , People's Republic of China
| |
Collapse
|
26
|
Wu M, Chang B, Lim TT, Oh WD, Lei J, Mi J. High-sulfur capacity and regenerable Zn-based sorbents derived from layered double hydroxide for hot coal gas desulfurization. JOURNAL OF HAZARDOUS MATERIALS 2018; 360:391-401. [PMID: 30130697 DOI: 10.1016/j.jhazmat.2018.08.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 07/23/2018] [Accepted: 08/06/2018] [Indexed: 06/08/2023]
Abstract
The Zn-Al mixed metal oxide (ZnAl-MMO) with a plate-like structure was derived from Zn-Al layered double hydroxide. The ZnAl-MMO with a Zn/Al molar ratio of 3:1 exhibits superior absorption ability for H2S in a simulated coal gas at 600 ℃ due to the special structure of the ZnAl-MMO. Besides ZnS, elemental sulfur is also produced during the desulfurization process. The deactivation model could well simulate the absorption behavior of H2S. The sulfidation reaction over the sorbent shows large initial reaction rate constants (1110-5390 m3 min-1 kg-1) and low activation energy (29.5 kJ mol-1). The regeneration rate of the used sorbent can reach 99.8% under the optimum conditions. The regenerated sorbents still show high sulfur capacity (ca. 30%), implying its great application potential for industrial-scale desulfurization of the hot coal gas.
Collapse
Affiliation(s)
- Mengmeng Wu
- Key Laboratory of Coal Science and Technology of Shanxi Province and Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China; Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore.
| | - Bingwei Chang
- Key Laboratory of Coal Science and Technology of Shanxi Province and Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
| | - Teik-Thye Lim
- Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Wen-Da Oh
- Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore; School of Chemical Sciences, Universiti Sains Malaysia, Penang 11800, Malaysia
| | - Junxi Lei
- Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore
| | - Jie Mi
- Key Laboratory of Coal Science and Technology of Shanxi Province and Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China.
| |
Collapse
|
27
|
Zhan Y, Shen L, Xu C, Zhao W, Cao Y, Jiang L. MOF-derived porous Fe2O3 with controllable shapes and improved catalytic activities in H2S selective oxidation. CrystEngComm 2018. [DOI: 10.1039/c8ce00552d] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Porous Fe2O3 architectures with controllable shapes are synthesized by the MOF-template method and show excellent catalytic activity for H2S selective oxidation.
Collapse
Affiliation(s)
- Yingying Zhan
- National Engineering Research Center of Chemical Fertilizer Catalyst
- Fuzhou University
- Fuzhou 350002
- P.R. China
| | - Lijuan Shen
- National Engineering Research Center of Chemical Fertilizer Catalyst
- Fuzhou University
- Fuzhou 350002
- P.R. China
| | - Congbo Xu
- National Engineering Research Center of Chemical Fertilizer Catalyst
- Fuzhou University
- Fuzhou 350002
- P.R. China
| | - Wentao Zhao
- National Engineering Research Center of Chemical Fertilizer Catalyst
- Fuzhou University
- Fuzhou 350002
- P.R. China
| | - Yanning Cao
- National Engineering Research Center of Chemical Fertilizer Catalyst
- Fuzhou University
- Fuzhou 350002
- P.R. China
| | - Lilong Jiang
- National Engineering Research Center of Chemical Fertilizer Catalyst
- Fuzhou University
- Fuzhou 350002
- P.R. China
| |
Collapse
|