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Thrane J, Falholt Elvebakken C, Juelsholt M, Lindahl Christiansen T, Jensen KMØ, Pilsgaard Hansen L, Fahl Lundegaard L, Vie Mentzel U, Thorhauge M, Degn Jensen A, Høj M. Highly Stable Apatite Supported Molybdenum Oxide Catalysts for Selective Oxidation of Methanol to Formaldehyde: Structure, Activity and Stability. ChemCatChem 2021. [DOI: 10.1002/cctc.202101220] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Joachim Thrane
- Department of Chemical and Biochemical Engineering Technical University of Denmark (DTU) Søltofts Plads 228 A DK-2800 Kgs. Lyngby Denmark
| | - Christopher Falholt Elvebakken
- Department of Chemical and Biochemical Engineering Technical University of Denmark (DTU) Søltofts Plads 228 A DK-2800 Kgs. Lyngby Denmark
| | - Mikkel Juelsholt
- Department of Chemistry University of Copenhagen (KU) Universitetsparken 5 DK-2100 København Ø Denmark
| | | | - Kirsten M. Ø. Jensen
- Department of Chemistry University of Copenhagen (KU) Universitetsparken 5 DK-2100 København Ø Denmark
| | | | | | - Uffe Vie Mentzel
- Haldor Topsøe A/S Haldor Topsøes Allé 1 DK-2800 Kgs. Lyngby Denmark
| | - Max Thorhauge
- Haldor Topsøe A/S Haldor Topsøes Allé 1 DK-2800 Kgs. Lyngby Denmark
| | - Anker Degn Jensen
- Department of Chemical and Biochemical Engineering Technical University of Denmark (DTU) Søltofts Plads 228 A DK-2800 Kgs. Lyngby Denmark
| | - Martin Høj
- Department of Chemical and Biochemical Engineering Technical University of Denmark (DTU) Søltofts Plads 228 A DK-2800 Kgs. Lyngby Denmark
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A Review and Experimental Revisit of Alternative Catalysts for Selective Oxidation of Methanol to Formaldehyde. Catalysts 2021. [DOI: 10.3390/catal11111329] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The selective oxidation of methanol to formaldehyde is a growing million-dollar industry, and has been commercial for close to a century. The Formox process, which is the largest production process today, utilizes an iron molybdate catalyst, which is highly selective, but has a short lifetime of 6 months due to volatilization of the active molybdenum oxide. Improvements of the process’s lifetime is, thus, desirable. This paper provides an overview of the efforts reported in the scientific literature to find alternative catalysts for the Formox process and critically assess these alternatives for their industrial potential. The catalysts can be grouped into three main categories: Mo containing, V containing, and those not containing Mo or V. Furthermore, selected interesting catalysts were synthesized, tested for their performance in the title reaction, and the results critically compared with previously published results. Lastly, an outlook on the progress for finding new catalytic materials is provided as well as suggestions for the future focus of Formox catalyst research.
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Huang L, Yang Z, Lei D, Liu F, He Y, Wang H, Luo J. Experimental and modeling studies for adsorbing different species of fluoride using lanthanum-aluminum perovskite. CHEMOSPHERE 2021; 263:128089. [PMID: 33297087 DOI: 10.1016/j.chemosphere.2020.128089] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 08/18/2020] [Accepted: 08/20/2020] [Indexed: 06/12/2023]
Abstract
We investigated the adsorption mechanisms for removing fluoride based on experimental and modeling studies. Lanthanum-aluminum perovskite was designed for treating wastewater contaminated by fluoride. A fluorine-species model was developed to calculate the concentrations of different species of fluorine: F-, HF, HF2-. Multiple kinetic models were examined and the pseudo-second order model was found the best to fit the experimental data, implying fast-chemisorption. The thermodynamic data were fitted by the Langmuir model and Freundlich model at different temperatures, indicating heterogeneous adsorption at low temperature and homogeneous adsorption at high temperature. The La2Al4O9 material had less influence from negative ions when adsorbing fluoride. The adsorption mechanisms were further studied using experiments and Density Functional Theory calculations. The adsorption experiments could be attributed to the lattice plane (1 2 1) and La, O, Al sites. More Al sites were required than La sites for the increase of fluoride concentration. By contrast, more La sites than Al sites were needed for increased pH.
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Affiliation(s)
- Lei Huang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Zhihui Yang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China; Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha, 410083, PR China
| | - Dongxue Lei
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Fansong Liu
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Yingjie He
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Haiying Wang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China; Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha, 410083, PR China.
| | - Jian Luo
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0355, USA
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Khalil KM, Elhamdy WA, Said AEAA. Direct formation of LaFeO3/MCM−41 nanocomposite catalysts and their catalytic reactivity for conversion of isopropanol. MATERIALS CHEMISTRY AND PHYSICS 2020; 254:123412. [DOI: 10.1016/j.matchemphys.2020.123412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Effect of B-site doping on Sr2PdO3 perovskite catalyst activity for non-enzymatic determination of glucose in biological fluids. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.113523] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Liang X, Wu C, Yu X, Huang W, Yin H. Pd Doped La0.1Sr0.9TiO3 as High-Temperature Water-Gas Shift Catalysts: In-Situ Formation of Active Pd Phase. Catal Letters 2018. [DOI: 10.1007/s10562-018-2462-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Preparation of Pd supported on La(Sr)-Mn-O Perovskite by microwave Irradiation Method and Its Catalytic Performances for the Methane Combustion. Sci Rep 2016; 6:19511. [PMID: 26781628 PMCID: PMC4726093 DOI: 10.1038/srep19511] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 12/14/2015] [Indexed: 11/08/2022] Open
Abstract
In this work, a series of palladium supported on the La0.8Sr0.2MnO3.15 perovskite catalysts (Pd/LSM-x) with different Pd loading were prepared by microwave irradiation processing plus incipient wetness impregnation method and characterized by XRD, TEM, H2-TPR and XPS. These catalysts were evaluated on the lean CH4 combustion. The results show that the Pd/LSM-x samples prepared by microwave irradiation processing possess relative higher surface areas than LSM catalyst. The addition of Pd to the LSM leads to the increase in the oxygen vacancy content and the enhancement in the mobility of lattice oxygen which play an important role on the methane combustion. The Pd/LSM-3 catalysts with 4.2wt% Pd loading exhibited the best performance for CH4 combustion that temperature for 10% and 90% of CH4 conversion is 315 and 520 °C.
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El-Ads EH, Galal A, Atta NF. The effect of A-site doping in a strontium palladium perovskite and its applications for non-enzymatic glucose sensing. RSC Adv 2016. [DOI: 10.1039/c5ra24107c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The catalytic activity of a strontium palladium perovskite, Sr2PdO3, toward non-enzymatic glucose sensing is strongly affected by the Sr2+ A-site partial substitution by Ca2+ ions; Sr2−xCaxPdO3 with x = 0–0.7.
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Affiliation(s)
- Ekram H. El-Ads
- Chemistry Department
- Faculty of Science
- Cairo University
- 12613 Giza
- Egypt
| | - Ahmed Galal
- Chemistry Department
- Faculty of Science
- Cairo University
- 12613 Giza
- Egypt
| | - Nada F. Atta
- Chemistry Department
- Faculty of Science
- Cairo University
- 12613 Giza
- Egypt
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Hou YC, Ding MW, Liu SK, Wu SK, Lin YC. Ni-substituted LaMnO3 perovskites for ethanol oxidation. RSC Adv 2014. [DOI: 10.1039/c3ra46323k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Liu SK, Lin YC. Autothermal Partial Oxidation of Glycerol to Syngas over Pt-, LaMnO3-, and Pt/LaMnO3-Coated Monoliths. Ind Eng Chem Res 2012. [DOI: 10.1021/ie3021686] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shih-Kang Liu
- Department of Chemical Engineering and Materials Science, Yuan Ze University, 135 Yuan-Tung Road, Chungli, Taoyuan
32003, Taiwan
| | - Yu-Chuan Lin
- Department of Chemical Engineering and Materials Science, Yuan Ze University, 135 Yuan-Tung Road, Chungli, Taoyuan
32003, Taiwan
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Jiang BS, Chang R, Hou YC, Lin YC. Kinetics of n-Butanol Partial Oxidation to Butyraldehyde over Lanthanum–Transition Metal Perovskites. Ind Eng Chem Res 2012. [DOI: 10.1021/ie3017175] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bing-Shiun Jiang
- Department of Chemical Engineering
and Materials Science, Yuan Ze University, 135 Yuan-Tung Road, Chungli, Taoyuan 32003, Taiwan
| | - Ray Chang
- Department of Chemical Engineering
and Materials Science, Yuan Ze University, 135 Yuan-Tung Road, Chungli, Taoyuan 32003, Taiwan
| | - Yi-Chen Hou
- Department of Chemical Engineering
and Materials Science, Yuan Ze University, 135 Yuan-Tung Road, Chungli, Taoyuan 32003, Taiwan
| | - Yu-Chuan Lin
- Department of Chemical Engineering
and Materials Science, Yuan Ze University, 135 Yuan-Tung Road, Chungli, Taoyuan 32003, Taiwan
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Jiang BS, Chang R, Lin YC. Partial Oxidation of Ethanol to Acetaldehyde over LaMnO3-Based Perovskites: A Kinetic Study. Ind Eng Chem Res 2012. [DOI: 10.1021/ie300348u] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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