1
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Mahmoudi E, Asghari E, Delibaş N, Niaei A. Application of response surface methodology for optimization of the test condition of oxygen evolution reaction over La 0.8Ba 0.2CoO 3 perovskite-active carbon composite. Sci Rep 2023; 13:22878. [PMID: 38129452 PMCID: PMC10739840 DOI: 10.1038/s41598-023-49836-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 12/12/2023] [Indexed: 12/23/2023] Open
Abstract
The Experimental Design was applied to optimize the electrocatalytic activity of La0.8Ba0.2CoO3 perovskite oxide/Active Carbon composite material in the alkaline solution for the Oxygen Evolution Reaction. After the preparation of La0.8Ba0.2CoO3, and structural characterizations, the experimental design was utilized to determine the optimal amount of the composite material and testing conditions. The overpotential was defined as the response variable, and the mass ratio of perovskite/active carbon, Potassium hydroxide (KOH) concentration, and Poly(vinylidene fluoride) (PVDF) amount were considered effective parameters. The significance of model terms is demonstrated by P-values less than 0.0500. The proposed prediction model determined the optimal amounts of 0.665 mg of PVDF, a KOH concentration of 0.609 M, and A perovskite/Active Carbon mass ratio of 2.81 with 308.22 mV overpotential (2.27% greater than the actual overpotential). The stability test of the optimized electrode material over 24 h suggests that it could be a good candidate electrocatalyst for OER with reusability potential.
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Affiliation(s)
- Elham Mahmoudi
- Department of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, 5166616471, Iran
| | - Elnaz Asghari
- Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Nagihan Delibaş
- Department of Physics, Faculty of Art and Science, Sakarya University, Sakarya, Turkey
| | - Aligholi Niaei
- Department of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, 5166616471, Iran.
- Department of Physics, Faculty of Art and Science, Sakarya University, Sakarya, Turkey.
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2
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Esmaili H, Ali Hosseini S. LaMn
x
Co
1‐x
O
3
(x=0, 0.25) Perovskites: Novel Nano Catalysts for Removal of Thiophene compounds in Fuels by Catalytic and Ultrasound‐assisted Oxidative Desulfurization. ChemistrySelect 2023. [DOI: 10.1002/slct.202204509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Affiliation(s)
- Habib Esmaili
- Department of Applied Chemistry, Faculty of Chemistry Urmia University Urmia. 5756151818 IRAN
| | - Seyed Ali Hosseini
- Department of Applied Chemistry, Faculty of Chemistry Urmia University Urmia. 5756151818 IRAN
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3
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Review of Emission Characteristics and Purification Methods of Volatile Organic Compounds (VOCs) in Cooking Oil Fume. Processes (Basel) 2023. [DOI: 10.3390/pr11030705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023] Open
Abstract
Volatile organic compounds (VOCs) in cooking oil fumes need to be efficiently removed due to the significant damage they cause to the environment and human health. This review discusses the emission characteristics, which are influenced by different cooking temperatures, cooking oils, and cuisines. Then, various cooking oil fume purification methods are mainly classified into physical capture, chemical decomposition, and combination methods. VOCs removal rate, system operability, secondary pollution, application area, and cost are compared. The catalytic combustion method was found to have the advantages of high VOC removal efficiency, environmental protection, and low cost. Therefore, the last part of this review focuses on the research progress of the catalytic combustion method and summarizes its mechanisms and catalysts. The Marse-van Krevelen (MVK), Langmuir-Hinshelwood (L-H), and Eley-Rideal (E-R) mechanisms are analyzed. Noble metal and non-noble metal catalysts are commonly used. The former showed excellent activity at low temperatures due to its strong adsorption and electron transfer abilities, but the high price limits its application. The transition metals primarily comprise the latter, including single metal and composite metal catalysts. Compared to single metal catalysts, the interaction between metals in composite metal catalysts can further enhance the catalytic performance.
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4
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Approach to the Characterization of Monolithic Catalysts Based on La Perovskite-like Oxides and Their Application for VOC Oxidation under Simulated Indoor Environment Conditions. Catalysts 2022. [DOI: 10.3390/catal12020168] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Catalysts are very important in controlling the pollutant emissions and are used for hundreds of chemical processes. Currently, noble metal-based catalysts are being replaced for other kinds of materials. In this study, three lanthanum-based perovskite-like oxides were synthesized (LaCo, LaCoMn, and LaMn) by the glycine-combustion method. The powder catalysts obtained were supported onto cordierite ceramic monoliths using an optimized washcoating methodology to obtain the subsequent monolithic catalysts (LaCo-S, LaCoMn-S, and LaMn-S). Sample characterization confirmed the formation of the perovskite-like phase in the powder materials as well as the presence of the perovskite phase after supporting it onto the monolithic structure. The XPS analysis showed a general decrease in lattice oxygen species for monolithic catalysts, mainly caused by the colloidal silica used as a binder agent during the washcoating process. Additionally, some variations in the oxidation state distribution for elements in Co-containing systems suggest a stronger interaction between cordierite and such catalysts. The catalytic activity results indicated that powder and monolithic catalysts were active for single-component VOC oxidation in the following order: 2-propanol > n-hexane ≅ mixture > toluene, and there was no evidence of loss of catalytic activity after supporting the catalysts. However, LaMn-S had a better catalytic performance for all VOC tested under dry conditions, achieving oxidation temperatures between 230–420 °C. The oxidation efficiency for the VOC mixture was strongly affected by the presence of moisture linking the oxidation efficiency at wet conditions to the VOC chemical nature. Additionally, for higher VOC concentrations, the catalyst efficiency decreased due to the limited number of active sites.
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5
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Zhang H, Li J, Shu S, Guo J, Liu Y, Cen W, Li X, Yang J. Preparation of VOC low-temperature oxidation catalysts with copper and iron binary metal oxides via hydrotalcite-like precursors. RSC Adv 2022; 12:35083-35093. [DOI: 10.1039/d2ra06611d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 11/17/2022] [Indexed: 12/13/2022] Open
Abstract
Design diagram for the removal toluene by Cu–Fe catalyst prepared from precursor hydrotalcite.
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Affiliation(s)
- Hongwei Zhang
- National Engineering Research Center for Flue Gas Desulfurization, Sichuan University, Chengdu 610065, China
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Jianjun Li
- National Engineering Research Center for Flue Gas Desulfurization, Sichuan University, Chengdu 610065, China
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Song Shu
- National Engineering Research Center for Flue Gas Desulfurization, Sichuan University, Chengdu 610065, China
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Jiaxiu Guo
- National Engineering Research Center for Flue Gas Desulfurization, Sichuan University, Chengdu 610065, China
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Yongjun Liu
- National Engineering Research Center for Flue Gas Desulfurization, Sichuan University, Chengdu 610065, China
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Wanglai Cen
- National Engineering Research Center for Flue Gas Desulfurization, Sichuan University, Chengdu 610065, China
- Institute of New Energy and Low Carbon Technology, Sichuan University, Chengdu 610065, China
| | - Xinpeng Li
- Chongqing Iron & Steel Company Limited, Chongqing 401220, China
| | - Jianrong Yang
- Chongqing Iron & Steel Company Limited, Chongqing 401220, China
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6
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Zheng Y, Chen Y, Wu E, Liu X, Huang B, Xue H, Cao C, Luo Y, Qian Q, Chen Q. Amorphous Boron Dispersed in LaCoO 3 with Large Oxygen Vacancies for Efficient Catalytic Propane Oxidation. Chemistry 2021; 27:4738-4745. [PMID: 33405257 DOI: 10.1002/chem.202004848] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Indexed: 11/07/2022]
Abstract
Unsatisfactory oxygen mobility is a considerable barrier to the development of perovskites for low-temperature volatile organic compounds (VOCs) oxidation. This work introduced small amounts of dispersed non-metal boron into the LaCoO3 crystal through an easy sol-gel method to create more oxygen defects, which are conducive to the catalytic performance of propane (C3 H8 ) oxidation. It reveals that moderate addition of boron successfully induces a high distortion of the LaCoO3 crystal, decreases the perovskite particle size, and produces a large proportion of bulk Co2+ species corresponding to abundant oxygen vacancies. Additionally, surface Co3+ species, as the acid sites, which are active for cleaving the C-H bonds of C3 H8 molecules, are enriched. As a result, the LCB-7 (molar ratio of Co/B=0.93:0.07) displays the best C3 H8 oxidation activity. Simultaneously, the above catalyst exhibits superior thermal stability against CO2 and H2 O, lasting 200 h. This work provides a new strategy for modifying the catalytic VOCs oxidation performance of perovskites by the regulation of amorphous boron dispersion.
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Affiliation(s)
- Yingbin Zheng
- Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fuzhou, 350007, P.R. China
| | - Yinye Chen
- Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fuzhou, 350007, P.R. China
| | - Enhui Wu
- Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fuzhou, 350007, P.R. China
| | - Xinping Liu
- Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fuzhou, 350007, P.R. China
| | - Baoquan Huang
- Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fuzhou, 350007, P.R. China
| | - Hun Xue
- Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fuzhou, 350007, P.R. China
| | - Changlin Cao
- Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fuzhou, 350007, P.R. China
| | - Yongjin Luo
- Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fuzhou, 350007, P.R. China
| | - Qingrong Qian
- Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fuzhou, 350007, P.R. China
| | - Qinghua Chen
- Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fuzhou, 350007, P.R. China.,Fuqing Branch of Fujian Normal University, Fuqing, 350300, P.R. China
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7
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Cui W, Chen H, Liu Q, Cui M, Chen X, Fei Z, Huang J, Tao Z, Wang M, Qiao X. Mn/Co Redox Cycle Promoted Catalytic Performance of Mesoporous SiO
2
‐Confined Highly Dispersed LaMn
x
Co
1‐x
O
3
Perovskite Oxides in n‐Butylamine Combustion. ChemistrySelect 2020. [DOI: 10.1002/slct.202002076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Wei Cui
- College of Chemical EngineeringNanjing Tech University Nanjing 211816 PR China State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816 PR China
| | - Huawei Chen
- College of Chemical EngineeringNanjing Tech University Nanjing 211816 PR China State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816 PR China
| | - Qing Liu
- College of Chemical EngineeringNanjing Tech University Nanjing 211816 PR China State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816 PR China
| | - Mifen Cui
- College of Chemical EngineeringNanjing Tech University Nanjing 211816 PR China State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816 PR China
| | - Xian Chen
- College of Chemical EngineeringNanjing Tech University Nanjing 211816 PR China State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816 PR China
| | - Zhaoyang Fei
- College of Chemical EngineeringNanjing Tech University Nanjing 211816 PR China State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816 PR China
| | - Jincan Huang
- College of Chemical EngineeringNanjing Tech University Nanjing 211816 PR China State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816 PR China
| | - Zuliang Tao
- College of Chemical EngineeringNanjing Tech University Nanjing 211816 PR China State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816 PR China
| | - Minghong Wang
- College of Chemical EngineeringNanjing Tech University Nanjing 211816 PR China State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816 PR China
| | - Xu Qiao
- College of Chemical EngineeringNanjing Tech University Nanjing 211816 PR China State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816 PR China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing 211816 PR China
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8
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9
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Chromite spinel nanocatalysts: promising photocatalysts for CO pollutant removal from the air. APPLIED NANOSCIENCE 2020. [DOI: 10.1007/s13204-019-01245-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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10
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Mohamed RMK, Girgis MM, El-Awad AM, Gabr RM. Microwave synthesis of nanocrystalline LaCoO3 samples and their catalytic activity towards decomposition of isopropanol. REACTION KINETICS MECHANISMS AND CATALYSIS 2020. [DOI: 10.1007/s11144-020-01733-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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11
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Photocatalytic discoloration of an azo-dye using LaMn0.5Ti0.5O3 double perovskite under visible light irradiation and enhancement of photocatalytic activity by using graphene. REACTION KINETICS MECHANISMS AND CATALYSIS 2019. [DOI: 10.1007/s11144-019-01629-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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12
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He C, Cheng J, Zhang X, Douthwaite M, Pattisson S, Hao Z. Recent Advances in the Catalytic Oxidation of Volatile Organic Compounds: A Review Based on Pollutant Sorts and Sources. Chem Rev 2019; 119:4471-4568. [DOI: 10.1021/acs.chemrev.8b00408] [Citation(s) in RCA: 769] [Impact Index Per Article: 153.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chi He
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P.R. China
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Jie Cheng
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
| | - Xin Zhang
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
| | - Mark Douthwaite
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Samuel Pattisson
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Zhengping Hao
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
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13
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Plasma Oxidation of H2S over Non-stoichiometric LaxMnO3 Perovskite Catalysts in a Dielectric Barrier Discharge Reactor. Catalysts 2018. [DOI: 10.3390/catal8080317] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this work, plasma-catalytic removal of H2S over LaxMnO3 (x = 0.90, 0.95, 1, 1.05 and 1.10) has been studied in a coaxial dielectric barrier discharge (DBD) reactor. The non-stoichiometric effect of the LaxMnO3 catalysts on the removal of H2S and sulfur balance in the plasma-catalytic process has been investigated as a function of specific energy density (SED). The integration of the plasma with the LaxMnO3 catalysts significantly enhanced the reaction performance compared to the process using plasma alone. The highest H2S removal of 96.4% and sulfur balance of 90.5% were achieved over the La0.90MnO3 catalyst, while the major products included SO2 and SO3. The missing sulfur could be ascribed to the sulfur deposited on the catalyst surfaces. The non-stoichiometric LaxMnO3 catalyst exhibited larger specific surface areas and smaller crystallite sizes compared to the LaMnO3 catalyst. The non-stoichiometric effect changed their redox properties as the decreased La/Mn ratio favored the transformation of Mn3+ to Mn4+, which contributed to the generation of oxygen vacancies on the catalyst surfaces. The XPS and H2-TPR results confirmed that the Mn-rich catalysts showed the higher relative concentration of surface adsorbed oxygen (Oads) and lower reduction temperature compared to LaMnO3 catalyst. The reaction performance of the plasma-catalytic oxidation of H2S is closely related to the relative concentration of Oads formed on the catalyst surfaces and the reducibility of the catalysts.
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14
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Pan KL, Pan GT, Chong S, Chang MB. Removal of VOCs from gas streams with double perovskite-type catalysts. J Environ Sci (China) 2018; 69:205-216. [PMID: 29941256 DOI: 10.1016/j.jes.2017.10.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 10/13/2017] [Accepted: 10/24/2017] [Indexed: 06/08/2023]
Abstract
Double perovskite-type catalysts including La2CoMnO6 and La2CuMnO6 are first evaluated for the effectiveness in removing volatile organic compounds (VOCs), and single perovskites (LaCoO3, LaMnO3, and LaCuO3) are also tested for comparison. All perovskites are tested with the gas hourly space velocity (GHSV) of 30,000hr-1, and the temperature range of 100-600°C for C7H8 removal. Experimental results indicate that double perovskites have better activity if compared with single perovskites. Especially, toluene (C7H8) can be completely oxidized to CO2 at 300°C as La2CoMnO6 is applied. Characterization of catalysts indicates that double perovskites own unique surface properties and are of higher amounts of lattice oxygen, leading to higher activity. Additionally, apparent activation energy of 68kJ/mol is calculated using Mars-van Krevelen model for C7H8 oxidation with La2CoMnO6 as catalyst. For durability test, both La2CoMnO6 and La2CuMnO6 maintain high C7H8 removal efficiencies of 100% and 98%, respectively, at 300°C and 30,000hr-1, and they also show good resistance to CO2 (5%) and H2O(g) (5%) of the gas streams tested. For various VOCs including isopropyl alcohol (C3H8O), ethanal (C2H4O), and ethylene (C2H4) tested, as high as 100% efficiency could be achieved with double perovskite-type catalysts operated at 300-350°C, indicating that double perovskites are promising catalysts for VOCs removal.
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Affiliation(s)
- Kuan Lun Pan
- Graduate Institute of Environmental Engineering, National Central University, Taoyuan City 32001, Chinese Taipei
| | - Guan Ting Pan
- Department of Chemical Engineering, National Taipei University of Technology, Taipei City 10608, Chinese Taipei
| | - Siewhui Chong
- Department of Chemical and Environmental Engineering, University of Nottingham Malaysia Campus, Jalan Broga, 43500, Selangor, Malaysia
| | - Moo Been Chang
- Graduate Institute of Environmental Engineering, National Central University, Taoyuan City 32001, Chinese Taipei.
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15
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Yang L, Hu R, Li H, Jia Y, Zhou Q, Wang H. The effect of interaction between La 2 AlCoO 6 and CuCl 2 on ethane oxychlorination. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.07.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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16
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Pan KL, Chen DL, Pan GT, Chong S, Chang MB. Removal of phenol from gas streams via combined plasma catalysis. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.03.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Chen DL, Pan KL, Chang MB. Catalytic removal of phenol from gas streams by perovskite-type catalysts. J Environ Sci (China) 2017; 56:131-139. [PMID: 28571848 DOI: 10.1016/j.jes.2016.04.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 04/18/2016] [Accepted: 04/25/2016] [Indexed: 06/07/2023]
Abstract
Three perovskite-type catalysts prepared by citric acid method are applied to remove phenol from gas streams with the total flow rate of 300mL/min, corresponding to a GHSV of 10,000/hr. LaMnO3 catalyst is first prepared and further partially substituted with Sr and Cu to prepare La0.8Sr0.2MnO3 and La0.8Sr0.2Mn0.8Cu0.2O3, and catalytic activities and fundamental characteristics of these three catalysts are compared. The results show that phenol removal efficiency achieved with La0.8Sr0.2Mn0.8Cu0.2O3 reaches 100% with the operating temperature of 200°C and the rate of mineralization at 300°C is up to 100%, while the phenol removal efficiencies achieved with La0.8Sr0.2MnO3 and LaMnO3 are up to 100% with the operating temperature of 300°C and 400°C, respectively. X-ray photoelectron spectroscopy (XPS) analysis shows that the addition of Sr and Cu increases the lattice oxygen of La0.8Sr0.2Mn0.8Cu0.2O3, and further increases mobility or availability of lattice oxygen. The results indicate that La0.8Sr0.2Mn0.8Cu0.2O3 has the best activity for phenol removal among three catalysts prepared and the catalytic activity of phenol oxidation is enhanced by the introduction of Sr and Cu into LaMnO3. Apparent activation energy of 48kJ/mol is calculated by Mars-Van Krevelen Model for phenol oxidation with La0.8Sr0.2Mn0.8Cu0.2O3 as catalyst.
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Affiliation(s)
- Dai Ling Chen
- Graduate Institute of Environmental Engineering, "National" Central University, Taoyuan City 32001, Chinese Taipei
| | - Kuan Lun Pan
- Graduate Institute of Environmental Engineering, "National" Central University, Taoyuan City 32001, Chinese Taipei
| | - Moo Been Chang
- Graduate Institute of Environmental Engineering, "National" Central University, Taoyuan City 32001, Chinese Taipei.
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18
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Izadkhah B, Niaei A, Illán-Gómez MJ, Salari D, Tarjomannejad A, Albaladejo-Fuentes V. LaBO3 (B = Mn, Fe, Co, Ni, Cu, and Zn) Catalysts for CO + NO Reaction. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b00457] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - María José Illán-Gómez
- Carbon
Materials and Environment Research Group, Department of Inorganic
Chemistry, Faculty of Science, University of Alicante, E-03080 Alicante, Spain
| | | | | | - Vicente Albaladejo-Fuentes
- Carbon
Materials and Environment Research Group, Department of Inorganic
Chemistry, Faculty of Science, University of Alicante, E-03080 Alicante, Spain
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19
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Tarjomannejad A, Farzi A, Gómez MJI, Niaei A, Salari D, Albaladejo-Fuentes V. Catalytic Reduction of NO by CO over LaMn1−xFexO3 and La0.8A0.2Mn0.3Fe0.7O3 (A = Sr, Cs, Ba, Ce) Perovskite Catalysts. Catal Letters 2016. [DOI: 10.1007/s10562-016-1860-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Modeling and optimization of toluene oxidation over perovskite-type nanocatalysts using a hybrid artificial neural network-genetic algorithm method. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.05.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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21
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An experimental and kinetic study of toluene oxidation over LaMn1−x B x O3 and La0.8A0.2Mn0.3B0.7O3 (A=Sr, Ce and B=Cu, Fe) nano-perovskite catalysts. KOREAN J CHEM ENG 2016. [DOI: 10.1007/s11814-016-0108-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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23
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Catalytic removal of CO and NOx using sol-gel synthesized LaB0.5Co0.5O3 (B=Cr, Mn and Cu) and LaMn x Co1-x O3 nano-perovskites. KOREAN J CHEM ENG 2016. [DOI: 10.1007/s11814-015-0254-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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24
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Recent Development of Catalysts for Removal of Volatile Organic Compounds in Flue Gas by Combustion: A Review. J CHEM-NY 2016. [DOI: 10.1155/2016/8324826] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Volatile organic compounds (VOCs) emitted from anthropogenic sources pose direct and indirect hazards to both atmospheric environment and human health due to their contribution to the formation of photochemical smog and potential toxicity including carcinogenicity. Therefore, to abate VOCs emission, the catalytic oxidation process has been extensively studied in laboratories and widely applied in various industries. This report is mainly focused on the benzene, toluene, ethylbenzene, and xylene (BTEX) with additional discussion about chlorinated VOCs. This review covers the recent developments in catalytic combustion of VOCs over noble metal catalysts, nonnoble metal catalysts, perovskite catalysts, spinel catalysts, and dual functional adsorbent-catalysts. In addition, the effects of supports, coke formation, and water effects have also been discussed. To develop efficient and cost-effective catalysts for VOCs removal, further research in catalytic oxidation might need to be carried out to strengthen the understanding of catalytic mechanisms involved.
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Safa KD, Allahvirdinesbat M, Namazi H. Synthesis of Novel Organosiliconsulfur-Containing Tetrasubstituted Imidazoles Sonocatalyzed by LaxSr1−xFeyCo1−yO3 Nanoperovskites. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2015.1009552] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Kazem D. Safa
- Organosilicon Research Laboratory, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | | | - Hassan Namazi
- Laboratory of Dendrimers and Nano-biopolymers, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
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Ramzi H, Batis H. Structure, Chemical Composition, and Catalytic Behaviour of Stoichiometric and Non-Stoichiometric LaMnO3 Toward Deep Oxidation of Ethanol. Aust J Chem 2015. [DOI: 10.1071/ch15107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A series of structurally modified LarMnO3±δ (r = 0.80, 1.00, 1.25) perovskites have been investigated for ethanol deep oxidation in the temperature range 100–300°C. The catalysts were characterized by X-ray diffraction (XRD), Brunauer–Emmet–Teller (BET) surface area analysis, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), redox titration and CO2 adsorption. All samples are single perovskite phases without segregated phases. For La- and Mn-under-stoichiometric samples, the defects generated to maintain structure electroneutrality are positive holes and anion vacancies whereas for stoichiometric solids, the defects are positive holes and cation vacancies. The surface oxidation state and composition are critically controlled by the phase composition of the bulk. XPS results showed that the decrease in bulk La/Mn ratio induced a decrease in surface La enrichment. A concomitant decrease of basic site concentration was shown by CO2 adsorption. With lower surface La content, excess Mn sites and increasing concentrations of surface Mn4+ were observed. Catalytic properties in the oxidation reaction of ethanol are attributed to the variability of the manganese oxidation state, basic character of the material surface, which is related to the La/Mn atomic ratio, and to the oxygen storage capacity in the crystalline lattice of the catalysts. It was shown that La0.8MnO3–δ presents the best catalytic activity, due to low surface basicity (lowest La/Mn ratio) and high redox properties (highest Mn4+/Mn3+ ratio).
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Oskoui SA, Niaei A, Tseng HH, Salari D, Izadkhah B, Hosseini SA. Modeling preparation condition and composition-activity relationship of perovskite-type LaxSr1-xFeyCo1-yO3 nano catalyst. ACS COMBINATORIAL SCIENCE 2013; 15:609-21. [PMID: 24102474 DOI: 10.1021/co400017r] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this paper, an artificial neural network (ANN) is first applied to perovskite catalyst design. A series of perovskite-type oxides with the LaxSr1-xFeyCo1-yO3 general formula were prepared with a sol-gel autocombustion method under different preparation conditions. A three-layer perceptron neural network was used for modeling and optimization of the catalytic combustion of toluene. A high R2 value was obtained for training and test sets of data: 0.99 and 0.976, respectively. Due to the presence of full active catalysts, there was no necessity to use an optimizer algorithm. The optimum catalysts were La0.9Sr0.1Fe0.5Co0.5O3 (Tc=700 and 800 °C and [citric acid/nitrate]=0.750), La0.9Sr0.1Fe0.82Co0.18O3 (Tc=700 °C, [citric acid/nitrate]=0.750), and La0.8Sr0.2Fe0.66Co0.34O3 (Tc=650 °C, [citric acid/nitrate]=0.525) exhibiting 100% conversion for toluene. More evaluation of the obtained model revealed the relative importance and criticality of preparation parameters of optimum catalysts. The structure, morphology, reducibility, and specific surface area of catalysts were investigated with XRD, SEM, TPR, and BET, respectively.
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Affiliation(s)
- Samira Arefi Oskoui
- Department
of Applied Chemistry and Chemical Engineering, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Aligholi Niaei
- Department
of Applied Chemistry and Chemical Engineering, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Hui-Hsin Tseng
- School
of Occupational Safety and Health, Chung Shan Medical University, Taichung 402, Taiwan, Republic of China
- Department
of Occupational Medicine, Chung Shan Medical University Hospital, Taichung 402, Taiwan, Republic of China
| | - Dariush Salari
- Department
of Applied Chemistry and Chemical Engineering, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Behrang Izadkhah
- Department
of Applied Chemistry and Chemical Engineering, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Seyed Ali Hosseini
- Department
of Chemistry, Faculty of Science, Urmia University, 57159, Urmia, Iran
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