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Liao FY, Weng JR, Lin YC, Feng CH. Molecularly imprinted dispersive micro solid-phase extraction and tandem derivatization for the determination of histamine in fermented wines. Anal Bioanal Chem 2024; 416:945-957. [PMID: 38051414 DOI: 10.1007/s00216-023-05083-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/17/2023] [Accepted: 11/29/2023] [Indexed: 12/07/2023]
Abstract
Histamine causes allergic reactions and can serve as an indicator for assessing food quality. This study designed and developed a dispersive micro solid-phase extraction (D-μSPE) method that combined the advantages of dispersive liquid-liquid extraction and solid-phase extraction (SPE). Molecularly imprinted polymers (MIPs) were employed as the solid phase in the D-μSPE method to extract histamine in wine samples. We used microwave energy to significantly reduce the synthesis time, achieving an 11.1-fold shorter synthesis time compared to the conventional MIP synthetic method. Under optimized D-μSPE conditions, our results showed that the dispersive solvent could effectively increase the adsorption performance of MIPs in wine samples by 97.7%. To improve the sensitivity of histamine detection in gas chromatography-mass spectrometry, we employed the microwave-assisted tandem derivatization method to reuse excess derivatization reagents and reduce energy consumption and reaction time. Calibration curves were constructed for wine samples spiked with 0-400 nmol histamine using the standard addition method, resulting in good linearity with a coefficient of determination of 0.999. The intra- and inter-batch relative standard deviations of the slope and intercept were < 0.7% and < 5.3%, respectively. The limits of quantitation and detection were 0.4 nmol and 0.1 nmol, respectively. The developed method was successfully applied to analyze the histamine concentration in 10 commercial wine samples. In addition, the AGREEprep tool was used to evaluate the greenness performance of the developed method, which obtained a higher score than the other reported methods.
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Affiliation(s)
- Fang-Yi Liao
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
| | - Jing-Ru Weng
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan
| | - Ying-Chi Lin
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan.
- Doctoral Degree Program in Toxicology, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan.
| | - Chia-Hsien Feng
- Department of Fragrance and Cosmetic Science, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan.
- Master Degree Program in Toxicology, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan.
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan.
- Department of Medical Research, Kaohsiung Medical University Hospital, 100, Shih-Chuan 1st Road, Kaohsiung, 80708, Taiwan.
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2
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Yadav G, Yadav N, Ahmaruzzaman M. Microwave-assisted synthesis of biodiesel by a green carbon-based heterogeneous catalyst derived from areca nut husk by one-pot hydrothermal carbonization. Sci Rep 2022; 12:21455. [PMID: 36509869 PMCID: PMC9744914 DOI: 10.1038/s41598-022-25877-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022] Open
Abstract
In this study, we have synthesized a solid acid catalyst by areca nut husk using low temperature hydrothermal carbonization method. The fabricated catalyst has enhanced sulfonic actives sites (3.12%) and high acid density (1.88 mmol g-1) due to -SO3H, which are used significantly for effective biodiesel synthesis at low temperatures. The chemical composition and morphology of the catalyst is determined by various techniques, such as Fourier transform infrared (FTIR), powder X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), Scanning electron microscope (SEM), Energy disruptive spectroscopy (EDS), Mapping, Thermogravimetric analysis (TGA), CHNS analyzer, Transmission electron microscopy (TEM), particle size analyzer, and X-ray photoelectron spectroscopy (XPS). Acid-base back titration method was used to determine the acid density of the synthesized material. In the presence of the as-fabricated catalyst, the conversion of oleic acid (OA) to methyl oleate reached 96.4% in 60 min under optimized conditions (1:25 Oleic acid: methanol ratio, 80 °C, 60 min, 9 wt% catalyst dosage) and observed low activation energy of 45.377 kJ mol-1. The presence of the porous structure and sulfonic groups of the catalyst contributes to the high activity of the catalyst. The biodiesel synthesis was confirmed by gas-chromatography mass spectrometer (GC-MS) and Nuclear magnetic resonance (NMR). The reusability of the catalyst was examined up to four consecutive cycles, yielding a high 85% transformation of OA to methyl oleate on the fourth catalytic cycle.
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Affiliation(s)
- Gaurav Yadav
- grid.444720.10000 0004 0497 4101Department of Chemistry, National Institute of Technology, Silchar, Assam 788010 India
| | - Nidhi Yadav
- grid.444720.10000 0004 0497 4101Department of Chemistry, National Institute of Technology, Silchar, Assam 788010 India
| | - Md. Ahmaruzzaman
- grid.444720.10000 0004 0497 4101Department of Chemistry, National Institute of Technology, Silchar, Assam 788010 India
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3
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Hueso JL, Mallada R, Santamaria J. Gas-solid contactors and catalytic reactors with direct microwave heating: Current status and perspectives. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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4
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Li R, Xu W, Deng J, Zhou J. Coke-Resistant Ni–Co/ZrO 2–CaO-Based Microwave Catalyst for Highly Effective Dry Reforming of Methane by Microwave Catalysis. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03164] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ran Li
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province, School of Chemical Engineering, Xiangtan University, Xiangtan 411105, P.R.China
| | - Wentao Xu
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province, School of Chemical Engineering, Xiangtan University, Xiangtan 411105, P.R.China
- National and Local United Engineering Research Center for Chemical Process Simulation and Intensification, Xiangtan University, Xiangtan 411105, P.R.China
| | - Jie Deng
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province, School of Chemical Engineering, Xiangtan University, Xiangtan 411105, P.R.China
| | - Jicheng Zhou
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province, School of Chemical Engineering, Xiangtan University, Xiangtan 411105, P.R.China
- National and Local United Engineering Research Center for Chemical Process Simulation and Intensification, Xiangtan University, Xiangtan 411105, P.R.China
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5
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Atri S, Tomar R. A Review on the Synthesis and Modification of Functional Inorganic‐Organic‐Hybrid Materials via Microwave‐Assisted Method. ChemistrySelect 2021. [DOI: 10.1002/slct.202102030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Shalu Atri
- Department of Chemistry Faculty of Science SGT University Gurugram Haryana 122505 India
| | - Ravi Tomar
- Department of Chemistry Faculty of Science SGT University Gurugram Haryana 122505 India
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6
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Dynamic data reconciliation, parameter estimation, and multi-scale, multi-physics modeling of the microwave-assisted methane dehydroaromatization process. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2021.116624] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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7
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Aita S, Badavath VN, Gundluru M, Sudileti M, Nemallapudi BR, Gundala S, Zyryanov GV, Chamarti NR, Cirandur SR. Novel α-Aminophosphonates of imatinib Intermediate: Synthesis, anticancer Activity, human Abl tyrosine kinase Inhibition, ADME and toxicity prediction. Bioorg Chem 2021; 109:104718. [PMID: 33618257 DOI: 10.1016/j.bioorg.2021.104718] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 01/13/2021] [Accepted: 02/01/2021] [Indexed: 02/07/2023]
Abstract
An efficient method for the synthesis of a new class of α-aminophosphonates of imatinib derivative has been developed in one-pot Kabachnik-Fields reaction of N-(5-amino-2-methyl phenyl)-4-(3-pyridyl)-2-pyrimidine amine with various aldehydes and diethyl phosphite under microwave irradiation and neat conditions using NiO nanoparticles as an reusable and heterogeneous catalyst, with 96% yield at 450 W within 15 min. All the compounds were evaluated for their in vitro cytotoxicity with various cancer cell lines by MTT assay method. Compounds with halo (4f, -4Br, IC50 = 1.068 ± 0.88 µM to 2.033 ± 0.97 µM), nitro substitution (4 h, -3NO2, IC50 = 1.380 ± 0.94 µM to 2.213 ± 0.64 µM), (4 g, -4NO2, IC50 = 1.402 ± 0.79 µM to 2.335 ± 0.73 µM) and (4i, 4-Cl, 3-NO2, IC50 = 1.437 ± 0.92 µM to 2.558 ± 0.76 µM) were showed better anticancer activity when compared with standard drugs Doxorubicin and Imatinib using MTT assay method. Further in silico target hunting reveals the anticancer activity of the designed compounds by inhibiting human ABL tyrosine kinase and all the designed compounds have shown significant drug-like characteristics.
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Affiliation(s)
- Saikiran Aita
- Department of Chemistry, Sri Venkateswara University, Tirupati 517 502, A.P., India.
| | - Vishnu Nayak Badavath
- Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel.
| | - Mohan Gundluru
- Department of Chemistry, Sri Venkateswara University, Tirupati 517 502, A.P., India; DST-PURSE Centre, Sri Venkateswara University, Tirupati-517502, A.P., India.
| | - Murali Sudileti
- Department of Chemistry, Sri Venkateswara University, Tirupati 517 502, A.P., India.
| | | | - Sravya Gundala
- Chemical Engineering Institute, Ural Federal University, Yekaterinburg 620002, Russian Federation.
| | - Grigoriy Vasilievich Zyryanov
- Chemical Engineering Institute, Ural Federal University, Yekaterinburg 620002, Russian Federation; Ural Division of the Russian Academy of Sciences, I. Ya. Postovskiy Institute of Organic Synthesis, 22 S. Kovalevskoy Street, Yekaterinburg 620219, Russian Federation.
| | - Naga Raju Chamarti
- Department of Chemistry, Sri Venkateswara University, Tirupati 517 502, A.P., India.
| | - Suresh Reddy Cirandur
- Department of Chemistry, Sri Venkateswara University, Tirupati 517 502, A.P., India.
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8
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Microwave-Assisted Pyrolysis of Pine Wood Sawdust Mixed with Activated Carbon for Bio-Oil and Bio-Char Production. Processes (Basel) 2020. [DOI: 10.3390/pr8111437] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Pyrolysis of pine wood sawdust was carried out using microwave-heating technology in the presence of activated carbon (AC). Experimental conditions were of 20 min processing time, 10 wt.% of AC, and a microwave power varying from 100 to 800 W. The results obtained showed that the microwave absorber allowed increasing the bio-oil yield up to 2 folds by reducing the charcoal fraction. The maximum temperature reached was 505 °C at 800 W. The higher heating values (HHV) of the solid residues ranged from 17.6 to 30.3 MJ/kg. The highest HHV was obtained for the sample heated at 800 W with 10 wt.% of AC, which was 33% higher than the non-charged sample heated at the same power. Furthermore, the addition of AC allowed showing the probable catalytic effect of the AC in the charged sample pyrolysis bio-oils.
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9
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Sustainable Activated Carbon Production via Microwave for Wastewater Treatment: A Comparative Review. BORNEO JOURNAL OF RESOURCE SCIENCE AND TECHNOLOGY 2020. [DOI: 10.33736/bjrst.2030.2020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
This is an era where the application of adsorption and usage of activated carbons (AC) are considered as mainstream water treatments. The upgrade of these materials may only be through its preparation methods, where most researchers have transitioned from using the conventional furnace methods to using microwave ovens. Derived from various precursors, ACs can be the key in developing numerous environmental applications. This paper reviews the development of production processes of AC from various precursors in the past decades by microwave heating. The importance of the applied methodology and how activating conditions play an influential role, such as carbonisation temperature, activation time, and impregnation ratio are also outlined in this review. From the review of AC production processes, ACs produced from various precursors by chemical method with microwave heating have shown to be the significant factor in developing ACs with relatively higher surface area compared to conventional heating ACs.
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10
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Abstract
Since the late 1980s, the scientific community has been attracted to microwave energy as an alternative method of heating, due to the advantages that this technology offers over conventional heating technologies. In fact, differently from these, the microwave heating mechanism is a volumetric process in which heat is generated within the material itself, and, consequently, it can be very rapid and selective. In this way, the microwave-susceptible material can absorb the energy embodied in the microwaves. Application of the microwave heating technique to a chemical process can lead to both a reduction in processing time as well as an increase in the production rate, which is obtained by enhancing the chemical reactions and results in energy saving. The synthesis and sintering of materials by means of microwave radiation has been used for more than 20 years, while, future challenges will be, among others, the development of processes that achieve lower greenhouse gas (e.g., CO2) emissions and discover novel energy-saving catalyzed reactions. A natural choice in such efforts would be the combination of catalysis and microwave radiation. The main aim of this review is to give an overview of microwave applications in the heterogeneous catalysis, including the preparation of catalysts, as well as explore some selected microwave assisted catalytic reactions. The review is divided into three principal topics: (i) introduction to microwave chemistry and microwave materials processing; (ii) description of the loss mechanisms and microwave-specific effects in heterogeneous catalysis; and (iii) applications of microwaves in some selected chemical processes, including the preparation of heterogeneous catalysts.
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11
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Overcoming Stability Problems in Microwave-Assisted Heterogeneous Catalytic Processes Affected by Catalyst Coking. Catalysts 2019. [DOI: 10.3390/catal9100867] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Microwave-assisted heterogeneous catalysis (MHC) is gaining attention due to its exciting prospects related to selective catalyst heating, enhanced energy-efficiency, and partial inhibition of detrimental side gas-phase reactions. The induced temperature difference between the catalyst and the comparatively colder surrounding reactive atmosphere is pointed as the main factor of the process selectivity enhancement towards the products of interest in a number of hydrocarbon conversion processes. However, MHC is traditionally restricted to catalytic reactions in the absence of catalyst coking. As excellent MW-susceptors, carbon deposits represent an enormous drawback of the MHC technology, being main responsible of long-term process malfunctions. This work addresses the potentials and limitations of MHC for such processes affected by coking (MHCC). It also intends to evaluate the use of different catalyst and reactor configurations to overcome heating stability problems derived from the undesired coke deposits. The concept of long-term MHCC operation has been experimentally tested/applied to for the methane non-oxidative coupling reaction at 700 °C on Mo/ZSM-5@SiC structured catalysts. Preliminary process scalability tests suggest that a 6-fold power input increases the processing of methane flow by 150 times under the same controlled temperature and spatial velocity conditions. This finding paves the way for the implementation of high-capacity MHCC processes at up-scaled facilities.
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12
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Xu W, Chen J, Qiu Y, Peng W, Shi N, Zhou J. Highly efficient microwave catalytic oxidation degradation of 4-nitrophenol over magnetically separable NiCo2O4-Bi2O2CO3 composite without adding oxidant. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.12.061] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Ramirez A, Hueso JL, Abian M, Alzueta MU, Mallada R, Santamaria J. Escaping undesired gas-phase chemistry: Microwave-driven selectivity enhancement in heterogeneous catalytic reactors. SCIENCE ADVANCES 2019; 5:eaau9000. [PMID: 30899784 PMCID: PMC6420312 DOI: 10.1126/sciadv.aau9000] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 01/30/2019] [Indexed: 06/09/2023]
Abstract
Research in solid-gas heterogeneous catalytic processes is typically aimed toward optimization of catalyst composition to achieve a higher conversion and, especially, a higher selectivity. However, even with the most selective catalysts, an upper limit is found: Above a certain temperature, gas-phase reactions become important and their effects cannot be neglected. Here, we apply a microwave field to a catalyst-support ensemble capable of direct microwave heating (MWH). We have taken extra precautions to ensure that (i) the solid phase is free from significant hot spots and (ii) an accurate estimation of both solid and gas temperatures is obtained. MWH allows operating with a catalyst that is significantly hotter than the surrounding gas, achieving a high conversion on the catalyst while reducing undesired homogeneous reactions. We demonstrate the concept with the CO2-mediated oxidative dehydrogenation of isobutane, but it can be applied to any system with significant undesired homogeneous contributions.
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Affiliation(s)
- A. Ramirez
- Department of Chemical and Environmental Engineering, University of Zaragoza, 50018 Zaragoza, Spain
- Institute of Nanoscience of Aragon (INA), University of Zaragoza, 50018 Zaragoza, Spain
| | - J. L. Hueso
- Department of Chemical and Environmental Engineering, University of Zaragoza, 50018 Zaragoza, Spain
- Institute of Nanoscience of Aragon (INA), University of Zaragoza, 50018 Zaragoza, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, (Spain)
- Instituto de Ciencia de Materiales de Aragon (ICMA), Consejo Superior de Investigaciones Científicas (CSIC-Universidad de Zaragoza), 50009, Zaragoza, Spain
| | - M. Abian
- Department of Chemical and Environmental Engineering, University of Zaragoza, 50018 Zaragoza, Spain
- Aragon Institute of Engineering Research (I3A), University of Zaragoza, 50018 Zaragoza, Spain
| | - M. U. Alzueta
- Department of Chemical and Environmental Engineering, University of Zaragoza, 50018 Zaragoza, Spain
- Aragon Institute of Engineering Research (I3A), University of Zaragoza, 50018 Zaragoza, Spain
| | - R. Mallada
- Department of Chemical and Environmental Engineering, University of Zaragoza, 50018 Zaragoza, Spain
- Institute of Nanoscience of Aragon (INA), University of Zaragoza, 50018 Zaragoza, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, (Spain)
- Instituto de Ciencia de Materiales de Aragon (ICMA), Consejo Superior de Investigaciones Científicas (CSIC-Universidad de Zaragoza), 50009, Zaragoza, Spain
| | - J. Santamaria
- Department of Chemical and Environmental Engineering, University of Zaragoza, 50018 Zaragoza, Spain
- Institute of Nanoscience of Aragon (INA), University of Zaragoza, 50018 Zaragoza, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, (Spain)
- Instituto de Ciencia de Materiales de Aragon (ICMA), Consejo Superior de Investigaciones Científicas (CSIC-Universidad de Zaragoza), 50009, Zaragoza, Spain
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14
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Enhancement of Fixed-bed Flow Reactions under Microwave Irradiation by Local Heating at the Vicinal Contact Points of Catalyst Particles. Sci Rep 2019; 9:222. [PMID: 30659205 PMCID: PMC6338740 DOI: 10.1038/s41598-018-35988-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 11/14/2018] [Indexed: 12/04/2022] Open
Abstract
The formation of local high temperature regions, or so-called “hot spots”, in heterogeneous reaction systems has been suggested as a critical factor in the enhancement of chemical reactions using microwave heating. In this paper, we report the generation of local high temperature regions between catalyst particles under microwave heating. First, we demonstrated that reaction rate of the dehydrogenation of 2-propanol over a magnetite catalyst was enhanced 17- (250 °C) to 38- (200 °C) fold when heated with microwave irradiation rather than an electrical furnace. Subsequently, the existence of microwave-generated specific local heating was demonstrated using a coupled simulation of the electromagnetic fields and heat transfer as well as in situ emission spectroscopy. Specific high-temperature regions were generated at the vicinal contact points of the catalyst particles due to the concentrated microwave electric field. We also directly observed local high temperature regions at the contact points of the particles during microwave heating of a model silicon carbide spherical material using in situ emission spectroscopy. We conclude that the generation of local heating at the contact points between the catalyst particles is a key factor for enhancing fixed-bed flow reactions under microwave irradiation.
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15
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Borges I, Silva AM, Modesto-Costa L. Microwave effects on NiMoS and CoMoS single-sheet catalysts. J Mol Model 2018; 24:128. [PMID: 29728781 DOI: 10.1007/s00894-018-3662-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 04/17/2018] [Indexed: 11/24/2022]
Abstract
Single-sheet nanoclusters of MoS2, NiMoS or CoMoS are widely used in hydrodesulfurization (HDS) catalysis in the petroleum industry. In HDS reactions under microwave irradiation, experiments indirectly pointed out that for pristine MoS2 reaction rates are accelerated because hot spots are generated on the catalyst bed. In this work, we investigated NiMoS and CoMoS isolated single-sheet substituted catalysts before and after thiophene adsorption focusing on quantifying the effect of microwave irradiation. For that purpose, density functional theory (DFT) molecular charge densities of each system were decomposed according to the distributed multipole analysis (DMA) of Stone. Site dipole values of each system were directly associated with a larger or smaller interaction with the microwave field according to a proposed general approach. We showed that microwave enhancement of HDS reaction rates can occur more efficiently in the CoMoS and NiMoS promoted clusters compared to pristine MoS2 in the following order: CoMoS > NiMoS > MoS2. The atomic origin of the catalyst hot spots induced by microwaves was clearly established in the promoted clusters.
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Affiliation(s)
- I Borges
- Departamento de Química, Instituto Militar de Engenharia, Rio de Janeiro, 22290-270, Brazil. .,Programa de Pós-Graduação em Engenharia de Defesa, Instituto Militar de Engenharia, Rio de Janeiro, 22290-270, Brazil.
| | - Alexander M Silva
- Departamento de Química, Instituto Militar de Engenharia, Rio de Janeiro, 22290-270, Brazil
| | - Lucas Modesto-Costa
- Departamento de Química, Instituto Militar de Engenharia, Rio de Janeiro, 22290-270, Brazil
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16
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Haneishi N, Tsubaki S, Maitani MM, Suzuki E, Fujii S, Wada Y. Electromagnetic and Heat-Transfer Simulation of the Catalytic Dehydrogenation of Ethylbenzene under Microwave Irradiation. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b01413] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Naoto Haneishi
- Department
of Chemical Science and Engineering, School of Materials and Chemical
Technology, Tokyo Institute of Technology, 2-12-1 E4-3 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Shuntaro Tsubaki
- Department
of Chemical Science and Engineering, School of Materials and Chemical
Technology, Tokyo Institute of Technology, 2-12-1 E4-3 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Masato M. Maitani
- Department
of Chemical Science and Engineering, School of Materials and Chemical
Technology, Tokyo Institute of Technology, 2-12-1 E4-3 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Eiichi Suzuki
- Department
of Chemical Science and Engineering, School of Materials and Chemical
Technology, Tokyo Institute of Technology, 2-12-1 E4-3 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Satoshi Fujii
- Department
of Chemical Science and Engineering, School of Materials and Chemical
Technology, Tokyo Institute of Technology, 2-12-1 E4-3 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
- Department
of Information and Communication Systems Engineering, Okinawa National College of Technology, 905 Henoko, Nago-shi, Okinawa 905-2192, Japan
| | - Yuji Wada
- Department
of Chemical Science and Engineering, School of Materials and Chemical
Technology, Tokyo Institute of Technology, 2-12-1 E4-3 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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17
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Liao Y, Zhang S, Tang Z, Liu X, Huang K. Power loss density of electromagnetic waves in unimolecular reactions. RSC Adv 2017. [DOI: 10.1039/c7ra01906h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Microwave-assisted chemical reactions have been widely used, but the mechanism is still unclear, which limits further applications.
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Affiliation(s)
- Yinhong Liao
- College of Electronics and Information Engineering
- Southwest University
- Chongqing
- China
| | - Sanmei Zhang
- College of Electronics and Information Engineering
- China West Normal University
- Nanchong
- China
| | - Zhengming Tang
- College of Electronics and Information Engineering
- China West Normal University
- Nanchong
- China
| | - Xinpeng Liu
- Communication and Information Engineering
- Chengdu Technological University
- Chengdu
- China
| | - Kama Huang
- College of Electronics and Information Engineering
- Sichuan University
- Chengdu
- China
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18
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Sturm GSJ, Stankiewicz AI, Stefanidis GD. Microwave Reactor Concepts: From Resonant Cavities to Traveling Fields. ALTERNATIVE ENERGY SOURCES FOR GREEN CHEMISTRY 2016. [DOI: 10.1039/9781782623632-00093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Microwave chemistry has been investigated for nearly thirty years with many notable results being published on apparent process enhancement due to microwave exposure. Conclusive proof of beneficial microwave-chemical interactions is lacking though, as are design rules for successful implementation of microwave-chemical processing systems. In this chapter, the main cause for this is asserted to be the current absence both of suitable instrumentation for research, and processing equipment that merges chemistry with electromagnetic aspects. Several concepts are presented to show how these challenges may be addressed.
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Affiliation(s)
- Guido S. J. Sturm
- Process and Energy Department, Delft University of Technology Leeghwaterstraat 39 2628 CB Delft The Netherlands
| | - Andrzej I. Stankiewicz
- Process and Energy Department, Delft University of Technology Leeghwaterstraat 39 2628 CB Delft The Netherlands
| | - Georgios D. Stefanidis
- Chemical Engineering Department, Katholieke Universiteit Leuven Willem de Croylaan 46 3000 Leuven Belgium
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A new type of power energy for accelerating chemical reactions: the nature of a microwave-driving force for accelerating chemical reactions. Sci Rep 2016; 6:25149. [PMID: 27118640 PMCID: PMC4846869 DOI: 10.1038/srep25149] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 04/11/2016] [Indexed: 11/22/2022] Open
Abstract
The use of microwave (MW) irradiation to increase the rate of chemical reactions has attracted much attention recently in nearly all fields of chemistry due to substantial enhancements in reaction rates. However, the intrinsic nature of the effects of MW irradiation on chemical reactions remains unclear. Herein, the highly effective conversion of NO and decomposition of H2S via MW catalysis were investigated. The temperature was decreased by several hundred degrees centigrade. Moreover, the apparent activation energy (Ea’) decreased substantially under MW irradiation. Importantly, for the first time, a model of the interactions between microwave electromagnetic waves and molecules is proposed to elucidate the intrinsic reason for the reduction in the Ea’ under MW irradiation, and a formula for the quantitative estimation of the decrease in the Ea’ was determined. MW irradiation energy was partially transformed to reduce the Ea’, and MW irradiation is a new type of power energy for speeding up chemical reactions. The effect of MW irradiation on chemical reactions was determined. Our findings challenge both the classical view of MW irradiation as only a heating method and the controversial MW non-thermal effect and open a promising avenue for the development of novel MW catalytic reaction technology.
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Xu W, Zhou J, Su Z, Ou Y, You Z. Microwave catalytic effect: a new exact reason for microwave-driven heterogeneous gas-phase catalytic reactions. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01802a] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The microwave catalytic effect (lowering of activation energy) under microwave irradiation results in NO conversion exceeding that realized through conventional heating.
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Affiliation(s)
- Wentao Xu
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province
- School of Chemical Engineering
- Xiangtan University
- Xiangtan 411105
- PR China
| | - Jicheng Zhou
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province
- School of Chemical Engineering
- Xiangtan University
- Xiangtan 411105
- PR China
| | - Zhiming Su
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province
- School of Chemical Engineering
- Xiangtan University
- Xiangtan 411105
- PR China
| | - Yingpiao Ou
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province
- School of Chemical Engineering
- Xiangtan University
- Xiangtan 411105
- PR China
| | - Zhimin You
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province
- School of Chemical Engineering
- Xiangtan University
- Xiangtan 411105
- PR China
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21
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Xu W, Cai J, Zhou J, Ou Y, Long W, You Z, Luo Y. Highly Effective Direct Decomposition of Nitric Oxide by Microwave Catalysis over BaMeO3
(Me=Mn, Co, Fe) Mixed Oxides at Low Temperature under Excess Oxygen. ChemCatChem 2015. [DOI: 10.1002/cctc.201500966] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Wentao Xu
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province; School of Chemical Engineering; Xiangtan University; Xiangtan 411105 P.R. China
| | - Jinjun Cai
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province; School of Chemical Engineering; Xiangtan University; Xiangtan 411105 P.R. China
| | - Jicheng Zhou
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province; School of Chemical Engineering; Xiangtan University; Xiangtan 411105 P.R. China
| | - Yingpiao Ou
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province; School of Chemical Engineering; Xiangtan University; Xiangtan 411105 P.R. China
| | - Wei Long
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province; School of Chemical Engineering; Xiangtan University; Xiangtan 411105 P.R. China
| | - Zhimin You
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province; School of Chemical Engineering; Xiangtan University; Xiangtan 411105 P.R. China
| | - Yushang Luo
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province; School of Chemical Engineering; Xiangtan University; Xiangtan 411105 P.R. China
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22
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Schwenke AM, Hoeppener S, Schubert US. Synthesis and Modification of Carbon Nanomaterials utilizing Microwave Heating. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:4113-4141. [PMID: 26087742 DOI: 10.1002/adma.201500472] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 04/08/2015] [Indexed: 06/04/2023]
Abstract
Microwave-assisted synthesis and processing represents a growing field in materials research and successfully entered the field of carbon nanomaterials during the last decade. Due to the strong interaction of carbon materials with microwave radiation, fast heating rates and localized heating can be achieved. These features enable the acceleration of reaction processes, as well as the formation of nanostructures with special morphologies. A comprehensive overview is provided here on the possibilities and achievements in the field of carbon-nanomaterial research when using microwave-based heating approaches. This includes the synthesis and processing of carbon nanotubes and fibers, graphene materials, carbon nanoparticles, and capsules, as well as porous carbon materials. Additionally, the principles of microwave-heating, in particular of carbon materials, are introduced and important issues, i.e., safety and reproducibility, are discussed.
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Affiliation(s)
- Almut M Schwenke
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, D-07743, Jena, Germany
- Center for Energy and Environmental Chemistry (CEEC) Jena, Friedrich Schiller University Jena, Philosophenweg 7a, D-07743, Jena, Germany
| | - Stephanie Hoeppener
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, D-07743, Jena, Germany
- Center for Energy and Environmental Chemistry (CEEC) Jena, Friedrich Schiller University Jena, Philosophenweg 7a, D-07743, Jena, Germany
| | - Ulrich S Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, D-07743, Jena, Germany
- Center for Energy and Environmental Chemistry (CEEC) Jena, Friedrich Schiller University Jena, Philosophenweg 7a, D-07743, Jena, Germany
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Xu W, Zhou J, Ou Y, Luo Y, You Z. Microwave selective effect: a new approach towards oxygen inhibition removal for highly-effective NO decomposition by microwave catalysis over BaMn(x)Mg(1-x)O3 mixed oxides at low temperature under excess oxygen. Chem Commun (Camb) 2015; 51:4073-6. [PMID: 25660765 DOI: 10.1039/c4cc10288f] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A significant microwave selective effect on oxygen inhibition removal was found for NO decomposition through microwave catalysis over BaMn(x)Mg(1-x)O3 catalysts. Especially, the NO conversion and N2 selectivity were up to 99.8% and 99.9%, respectively for the BaMn(0.9)Mg(0.1)O3 catalyst even with the coexistence of 10% oxygen and low temperature of 250 °C.
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Affiliation(s)
- Wentao Xu
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province, School of Chemical Engineering, Xiangtan University, Xiangtan 411105, P. R. China.
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Liao FY, Lin YC, Chen YL, Feng CH. Determination of tranexamic acid in various matrices using microwave-assisted derivatization followed by dispersive liquid–liquid microextraction. J Chromatogr A 2015; 1377:35-45. [DOI: 10.1016/j.chroma.2014.12.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 11/13/2014] [Accepted: 12/05/2014] [Indexed: 10/24/2022]
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Xu W, Zhou J, You Z, Luo Y, Ou Y. Microwave Irradiation Coupled with Physically Mixed MeOx(Me=Mn, Ni) and Cu-ZSM-5 Catalysts for the Direct Decomposition of Nitric Oxide under Excess Oxygen. ChemCatChem 2014. [DOI: 10.1002/cctc.201402852] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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26
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Tsai CJ, Lin YC, Chen YL, Feng CH. Chemical derivatization combined with capillary LC or MALDI-TOF MS for trace determination of lipoic acid in cosmetics and integrated protein expression profiling in human keratinocytes. Talanta 2014; 130:347-55. [DOI: 10.1016/j.talanta.2014.07.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 07/03/2014] [Accepted: 07/07/2014] [Indexed: 01/24/2023]
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Total oxidation of lean propane over α-Fe2O3 using microwaves as an energy source. REACTION KINETICS MECHANISMS AND CATALYSIS 2014. [DOI: 10.1007/s11144-014-0776-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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28
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Panthapulakkal S, Kirk D, Sain M. Alkaline extraction of xylan from wood using microwave and conventional heating. J Appl Polym Sci 2014. [DOI: 10.1002/app.41330] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Suhara Panthapulakkal
- Department of Chemical Engineering and Applied Chemistry; University of Toronto; Toronto Ontario M5S 3E5 Canada
- Centre for Biocomposites and Biomaterials Processing; Faculty of Forestry, University of Toronto; Toronto Ontario M5S3B3 Canada
| | - Donald Kirk
- Department of Chemical Engineering and Applied Chemistry; University of Toronto; Toronto Ontario M5S 3E5 Canada
| | - Mohini Sain
- Department of Chemical Engineering and Applied Chemistry; University of Toronto; Toronto Ontario M5S 3E5 Canada
- Centre for Biocomposites and Biomaterials Processing; Faculty of Forestry, University of Toronto; Toronto Ontario M5S3B3 Canada
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Rapid preparation of biosorbents with high ion exchange capacity from rice straw and bagasse for removal of heavy metals. ScientificWorldJournal 2014; 2014:634837. [PMID: 24578651 PMCID: PMC3918400 DOI: 10.1155/2014/634837] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2013] [Accepted: 12/08/2013] [Indexed: 11/18/2022] Open
Abstract
This work describes the preparation of the cellulose phosphate with high ion exchange capacity from rice straw and bagasse for removal of heavy metals. In this study, rice straw and bagasse were modified by the reaction with phosphoric acid in the presence of urea. The introduced phosphoric group is an ion exchangeable site for heavy metal ions. The reaction by microwave heating yielded modified rice straw and modified bagasse with greater ion exchange capacities (∼3.62 meq/g) and shorter reaction time (1.5–5.0 min) than the phosphorylation by oil bath heating. Adsorption experiments towards Pb2+, Cd2+, and Cr3+ ions of the modified rice straw and the modified bagasse were performed at room temperature (heavy metal concentration 40 ppm, adsorbent 2.0 g/L). The kinetics of adsorption agreed with the pseudo-second-order model. It was shown that the modified rice straw and the modified bagasse could adsorb heavy metal ions faster than the commercial ion exchange resin (Dowax). As a result of Pb2+ sorption test, the modified rice straw (RH-NaOH 450W) removed Pb2+ much faster in the initial step and reached 92% removal after 20 min, while Dowax (commercial ion exchange resin) took 90 min for the same removal efficiency.
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Nishioka M, Sato K, Onodera A, Miyakawa M, Tanaka DAP, Kasai M, Miyazawa A, Suzuki TM. Controlled Heating of Palladium Dispersed Porous Alumina Tube and Continuous Oxidation of Ethylene Using Frequency-Variable Single-Mode Microwave Reactor. Ind Eng Chem Res 2014. [DOI: 10.1021/ie4032555] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Masateru Nishioka
- National Institute of Advanced Industrial Science and Technology, AIST, 4-2-1, Nigatake, Miyagino-ku, Sendai, 983-8551, Japan
| | - Koichi Sato
- National Institute of Advanced Industrial Science and Technology, AIST, 4-2-1, Nigatake, Miyagino-ku, Sendai, 983-8551, Japan
| | - Ayumi Onodera
- Tohoku Gakuin University, 1-13-1, Chuo, Tagajo, Miyagi, 985-8537, Japan
| | - Masato Miyakawa
- National Institute of Advanced Industrial Science and Technology, AIST, 4-2-1, Nigatake, Miyagino-ku, Sendai, 983-8551, Japan
| | | | - Makoto Kasai
- National Institute of Advanced Industrial Science and Technology, AIST, 4-2-1, Nigatake, Miyagino-ku, Sendai, 983-8551, Japan
| | - Akira Miyazawa
- National Institute of Advanced Industrial Science and Technology, AIST, 4-2-1, Nigatake, Miyagino-ku, Sendai, 983-8551, Japan
| | - Toshishige M. Suzuki
- National Institute of Advanced Industrial Science and Technology, AIST, 4-2-1, Nigatake, Miyagino-ku, Sendai, 983-8551, Japan
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32
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Influence of Microwave Synthesis Parameters on the Size and Morphology of the Resulting MgAl2O4 Nanoparticles. J CLUST SCI 2013. [DOI: 10.1007/s10876-013-0586-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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33
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Exploration of rectangular waveguides as a basis for microwave enhanced continuous flow chemistries. Chem Eng Sci 2013. [DOI: 10.1016/j.ces.2012.11.039] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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34
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Microwave-Assisted Synthesis of Isopropyl β-(3,4-Dihydroxyphenyl)- α-hydroxypropanoate. J CHEM-NY 2013. [DOI: 10.1155/2013/505460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Using microwave irradiation heating, isopropylβ-(3,4-dihydroxyphenyl)-α-hydroxypropanoate was synthesised from 3,4-dihydroxybenzaldehyde and acetylglycine through the formation of 2-methyl-4-(3,4-acetoxybenzylene)oxazol-5-ones,α-acetylamino-β-(3,4-diacetoxyphenyl)acrylic acid, andβ-(3,4-dihydroxyphenyl)pyruvic acid followed by Clemmensen reduction and esterification. The reaction conditions in terms of operating parameters were optimised by using an orthogonal design of experiment (ODOE) approach, including reaction temperature, reaction time, and microwave power level. Compared with conventional heating, the reaction time was significantly reduced for all reactions and the product yields were increased (except for the third-step reaction) under microwave heating conditions. The most remarkable microwave enhancement was found in the step of isopropylβ-(3,4-dihydroxyphenyl)-α-hydroxypropanoate production where the reaction time was reduced from 10 hrs (conventional heating) to 25 mins (microwave heating) whilst the yield was increased from 75.6% to 87.1%, respectively.
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Lee CL, Lin C, Jou CJG. Microwave-induced nanoscale zero-valent iron degradation of perchloroethylene and pentachlorophenol. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2012; 62:1443-1448. [PMID: 23362763 DOI: 10.1080/10962247.2012.719579] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
UNLABELLED Microwave (MW) is applied to enhance perchloroethylene (PCE) or pentachlorophenol (PCP) removal using zero-valent iron (ZVI; Fe(0)) as the dielectric medium. ZVI has a much higher dielectric loss factor (39.5) than other media; it is capable of absorbing MW radiation rapidly to speed up the release of electrons, leading to rises of the ZVI particle surface temperature. If the MW power is continued, excessive electricity will accumulated inside ZVI particles, resulting in sparks. The results show that during the initial 5 sec (700 W), the linear aliphatic PCE has a faster decomposing rate than the ringed PCP (82.0% vs. 4.8%) because less energy is required for decomposing the linear-chlorine bond (90 kcal mol(-1)) than ring-chlorine bonds (95 kcal mol(-1)). Later the removal rate for either PCE or PCP remains the same when the exposure time is between 5 and 60 sec. Without MW irradiation, linear PCE molecules have larger surface area to contact ZVI, and hence they have better removal efficiencies than PCP molecules. Using Fe(0) as a microwave dielectric medium to treat PCE or PCP is a new and worthwhile treatment technology; it is environmentally friendly, and its use will eliminate the secondary pollution. IMPLICATIONS Nanoscale iron particles are characterized by high surface-area-to-volume ratios, high specific surface area, and high surface reactivity. With a much higher dielectric loss factor, it is capable of absorbing MW radiation rapidly to speed up the release of electrons, leading to rise in temperature. The time needed to achieve a satisfactory treatment is also reduced, leading to significant saving of energy consumption to make this method cost-effective and also environmentally friendly for the industry to pursuit sustainable development.
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Affiliation(s)
- Chien-Li Lee
- Research and Development Center for Water Resource and Conservation, National Kaohsiung First University of Science and Technology, Taiwan, Republic of China
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36
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Bhattacharya M, Venkata SKR, Basak T. Role of microwave heating strategies in enhancing the progress of a first-order endothermic reaction. AIChE J 2012. [DOI: 10.1002/aic.13848] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Sandeep KR Venkata
- Dept. of Chemical Engineering; Indian Institute of Technology Madras; Chennai; 600036; India
| | - Tanmay Basak
- Dept. of Chemical Engineering; Indian Institute of Technology Madras; Chennai; 600036; India
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38
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Ma SC, Gao L, Ma JX, Jin X, Yao JJ, Zhao Y. Advances on simultaneous desulfurization and denitrification using activated carbon irradiated by microwaves. ENVIRONMENTAL TECHNOLOGY 2012; 33:1225-30. [PMID: 22856293 DOI: 10.1080/09593330.2011.618934] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This paper describes the research background and chemistry of desulfurization and denitrification technology using microwave irradiation. Microwave-induced catalysis combined with activated carbon adsorption and reduction can reduce nitric oxide to nitrogen and sulfur dioxide to sulfur from flue gas effectively. This paper also highlights the main drawbacks of this technology and discusses future development trends. It is reported that the removal of sulfur dioxide and nitric oxide using microwave irradiation has broad prospects for development in the field of air pollution control.
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Affiliation(s)
- Shuang-Chen Ma
- School of Environment, North China Electric Power University, Baoding, China.
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Gallert T, Hahn M, Sellin M, Schmöger C, Stolle A, Ondruschka B, Keller TF, Jandt KD. Microwave-assisted partial hydrogenation of citral by using ionic liquid-coated porous glass catalysts. CHEMSUSCHEM 2011; 4:1654-1661. [PMID: 21826800 DOI: 10.1002/cssc.201100154] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Indexed: 05/31/2023]
Abstract
The microwave-assisted hydrogenation of citral (3,7-dimethylocta-2,6-dienal) to citronellal with molecular hydrogen as the reducing agent was investigated. Several polar and non-polar solvents were screened and imidazolium-based ionic liquids were applied as modifiers for the palladium-containing porous glass catalysts (Pd/TP). The best results were obtained with N-ethyl-N'-methylimidazolium dicyanamide, N-ethyl-N'-methylimidazolium acetate, or N-ethyl-N'-methylimidazolium trifluoroacetate, which were used to prepare supported catalysts with an ionic liquid layer (SCILL) on Pd/TP by wet-impregnation. The influence of pressure and temperature when using these ionic liquid-containing catalysts, as well as their long-term stabilities, were examined. Working with microwave-assisted heating, high yields of citronellal were achieved under mild conditions within short reaction times. Catalyst characterization was carried out by means of BET measurements, X-ray photoelectron spectroscopy (XPS) and thermo-gravimetric analyses. The influences of the ionic liquid layer were derived from experiments carried out before and after the reactions.
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Affiliation(s)
- Thomas Gallert
- Institute for Technical Chemistry and Environmental Chemistry (ITUC), Friedrich Schiller University Jena, Jena, Germany
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Richel A, Laurent P, Wathelet B, Wathelet JP, Paquot M. Current perspectives on microwave-enhanced reactions of monosaccharides promoted by heterogeneous catalysts. Catal Today 2011. [DOI: 10.1016/j.cattod.2011.01.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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42
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Tarchini R, Galgano A, Di Blasi C. Modeling the influences of pressure and velocity variations on the microwave-induced pyrolysis of wood. AIChE J 2011. [DOI: 10.1002/aic.12584] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Zhang Q, Damit B, Welch J, Park H, Wu CY, Sigmund W. Microwave assisted nanofibrous air filtration for disinfection of bioaerosols. JOURNAL OF AEROSOL SCIENCE 2010; 41:880-888. [PMID: 32287374 PMCID: PMC7126052 DOI: 10.1016/j.jaerosci.2010.06.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2010] [Revised: 06/03/2010] [Accepted: 06/04/2010] [Indexed: 05/04/2023]
Abstract
Airborne biological agents, albeit intentionally released or naturally occurring, pose one of the biggest threats to public health and security. In this study, a microwave assisted nanofibrous air filtration system was developed to disinfect air containing airborne pathogens. Aerosolized E. coli vegetative cells and B. subtilis endospores, as benign surrogates of pathogens, were collected on nanofibrous filters and treated by microwave irradiation. Both static on-filter and dynamic in-flight tests were carried out. Results showed that E. coli cells were efficiently disinfected in both static and in-flight tests, whereas B. subtilis endospores were more resistant to this treatment. Microwave power level was found to be the major factor determining the effectiveness of disinfection. Both thermal and non-thermal effects of microwave irradiation contributed to the disinfection. Reducing flow velocity to decrease heat loss yielded higher disinfection efficiency.
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Affiliation(s)
- Qi Zhang
- Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL 32611, USA
| | - Brian Damit
- Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL 32611, USA
| | - James Welch
- Department of Linguistics, University of Florida, Gainesville, FL 32611, USA
| | - Hyoungjun Park
- Department of Materials Science and Engineering, University of Florida, FL 32611, USA
| | - Chang-Yu Wu
- Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL 32611, USA
| | - Wolfgang Sigmund
- Department of Materials Science and Engineering, University of Florida, FL 32611, USA
- Department of Energy Engineering, Hanyang University, Seoul, Republic of Korea
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Bilecka I, Niederberger M. Microwave chemistry for inorganic nanomaterials synthesis. NANOSCALE 2010; 2:1358-74. [PMID: 20845524 DOI: 10.1039/b9nr00377k] [Citation(s) in RCA: 436] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
This Feature Article gives an overview of microwave-assisted liquid phase routes to inorganic nanomaterials. Whereas microwave chemistry is a well-established technique in organic synthesis, its use in inorganic nanomaterials' synthesis is still at the beginning and far away from having reached its full potential. However, the rapidly growing number of publications in this field suggests that microwave chemistry will play an outstanding role in the broad field of Nanoscience and Nanotechnology. This article is not meant to give an exhaustive overview of all nanomaterials synthesized by the microwave technique, but to discuss the new opportunities that arise as a result of the unique features of microwave chemistry. Principles, advantages and limitations of microwave chemistry are introduced, its application in the synthesis of different classes of functional nanomaterials is discussed, and finally expected benefits for nanomaterials' synthesis are elaborated.
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Affiliation(s)
- Idalia Bilecka
- Laboratory for Multifunctional Materials, Department of Materials, ETH Zürich, Wolfgang-Pauli-Strasse 10, 8093 Zürich, Switzerland
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Ciacci T, Galgano A, Di Blasi C. Numerical simulation of the electromagnetic field and the heat and mass transfer processes during microwave-induced pyrolysis of a wood block. Chem Eng Sci 2010. [DOI: 10.1016/j.ces.2010.04.039] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Jou CJG, Hsieh SC, Lee CL, Lin C, Huang HW. Combining zero-valent iron nanoparticles with microwave energy to treat chlorobenzene. J Taiwan Inst Chem Eng 2010. [DOI: 10.1016/j.jtice.2009.08.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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47
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Lv S, Chen X, Ye Y, Yin S, Cheng J, Xia M. Rice hull/MnFe2O4 composite: preparation, characterization and its rapid microwave-assisted COD removal for organic wastewater. JOURNAL OF HAZARDOUS MATERIALS 2009; 171:634-639. [PMID: 19581049 DOI: 10.1016/j.jhazmat.2009.06.039] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2009] [Revised: 05/21/2009] [Accepted: 06/10/2009] [Indexed: 05/28/2023]
Abstract
Adsorbent/ferrite composites can adsorb and degrade organics in the organic wastewater treatment. In this study, a rice hull/MnFe(2)O(4) composite (RHM) was prepared via calcination under nitrogen atmosphere and was used to treat organic wastewater with the assistance of microwave radiation. Rice hull was pyrolysed to a porous substrate that consisted of silica and activated carbon under high temperature. Monodisperse spinel MnFe(2)O(4) nanoparticles whose mean diameter is around 59 nm are distributed on the substrate. With the assistance of microwave radiation, RHM was motivated to a hotspot of adsorption and catalysis which could remove more than 70% COD of wastewater within 6 min. The maximum COD removal was 73.5% when the concentration of RHM was 15 mg mL(-1) and the irradiation time of microwave radiation was 6 min. Although the BET surface area and iodine value of RHM are half of rice hull ash (RHA), the COD removal of RHM is 7-20% higher than that of RHA. It is attributed to the presence of MnFe(2)O(4), which enhances the catalytic activity of RHM. RHM can be regenerated via water washing. However, the surface area and the maximum COD removal of RHM decrease for each regeneration cycle. With the advantages of low cost and rapid processing, this novel rice hull/MnFe(2)O(4) composite could gain promising application in wastewater treating-agent.
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Affiliation(s)
- Shuangshuang Lv
- Zhejiang Institute of Geology & Mineral Resources, Hangzhou 310007, People's Republic of China
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Durka T, Van Gerven T, Stankiewicz A. Microwaves in Heterogeneous Gas-Phase Catalysis: Experimental and Numerical Approaches. Chem Eng Technol 2009. [DOI: 10.1002/ceat.200900207] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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49
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Horikoshi S, Serpone N. Photochemistry with microwaves. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2009. [DOI: 10.1016/j.jphotochemrev.2009.06.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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50
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Séguin E, Thomas S, Bazin P, Bond G, Henriques C, Thibault-Starzyk F. Infrared and microwaves at 5.8 GHz in a catalytic reactor. Phys Chem Chem Phys 2009; 11:1697-701. [DOI: 10.1039/b818260d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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