1
|
Kishimoto F, Yoshioka T, Ishibashi R, Yamada H, Muraoka K, Taniguchi H, Wakihara T, Takanabe K. Direct microwave energy input on a single cation for outstanding selective catalysis. SCIENCE ADVANCES 2023; 9:eadi1744. [PMID: 37595044 PMCID: PMC10438448 DOI: 10.1126/sciadv.adi1744] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 07/12/2023] [Indexed: 08/20/2023]
Abstract
Microwave (MW)-driven catalytic systems are attracting attention not only as an aggressive electrification strategy of the chemical industry but also as creating a unique catalytic reaction field that conventional equilibrium heating cannot achieve. This study unlocked direct and selective heating of single alkali metal cations in the pores of aluminosilicate zeolites under MW. Selectively heated Cs+ cations in FAU zeolite exhibited selective CH4 combustion performance, that is, COx generation at the heated Cs+ cations selectively occurred while side reactions in the low-temperature gas phase were suppressed. The Cs-O pair distribution function revealed by synchrotron-based in situ x-ray total scattering gave us direct evidence of peculiar displacement induced by MW, which was consistent with the results of molecular dynamics simulation mimicking MW heating. The concept of selective monoatomic heating by MW is expected to open a next stage in "microwave catalysis" science by providing physicochemical insights into "microwave effects."
Collapse
Affiliation(s)
- Fuminao Kishimoto
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Tatsushi Yoshioka
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Ryo Ishibashi
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Hiroki Yamada
- Japan Synchrotron Radiation Research Institute, SPring–8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Koki Muraoka
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Hiroki Taniguchi
- Department of Physics, Nagoya University, Nagoya 464-8602, Japan
| | - Toru Wakihara
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Institute of Engineering Innovation, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kazuhiro Takanabe
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| |
Collapse
|
2
|
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]
|
3
|
Microwave-Assisted CO Oxidation over Perovskites as a Model Reaction for Exhaust Aftertreatment—A Critical Assessment of Opportunities and Challenges. Catalysts 2022. [DOI: 10.3390/catal12070802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We introduce a microwave (MW)-assisted heterogeneous catalytical setup, which we carefully examined for its thermal and performance characteristics. Although MW-assisted heterogeneous catalysis has been widely explored in the past, there is still need for attention towards the specific experimental details, which may complicate the interpretation of results and comparability in general. In this study we discuss technical and material related factors influencing the obtained data from MW-assisted heterogeneous catalysis, specifically in regards to the oxidation of carbon monoxide over a selected perovskite catalyst, which shall serve as a model reaction for exhaust gas aftertreatment. A high degree of comparability between different experiments, both in terms of setup and the catalysts, is necessary to draw conclusions regarding this promising technology. Despite significant interest from both fundamental and applied research, many questions and controversies still remain and are discussed in this study. A series of deciding parameters is presented and the influence on the data is discussed. To control these parameters is both a challenge but also an opportunity to gain advanced insight into MW-assisted catalysis and to develop new materials and processes. The results and discussion are based upon experiments conducted in a monomode MW-assisted catalysis system employing powdered solid-state perovskite oxides in a fixed bed reactor. The discussion covers critical aspects concerning the determination of the actual catalyst temperature, the homogeneity of the thermal distribution, time, and local temperature relaxation (i.e., thermal runaway effects and hotspot formation), particle size effects, gas flow considerations, and system design.
Collapse
|
4
|
Ding S, Zhu C, Hojo H, Einaga H. Enhanced catalytic performance of spinel-type Cu-Mn oxides for benzene oxidation under microwave irradiation. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127523. [PMID: 34736176 DOI: 10.1016/j.jhazmat.2021.127523] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 10/13/2021] [Accepted: 10/13/2021] [Indexed: 06/13/2023]
Abstract
Microwave-assisted heterogeneous catalytic oxidation of benzene was investigated over Cu-Mn spinel oxides. The spinel oxides were synthesized by a coprecipitation method from metal nitrate hydrolysis in a solution using tetramethylammonium hydroxide (TMAH) as a precipitation reagent. The catalysts were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, X-ray absorption fine structure, scanning electron microscopy, transmission electron microscope and H2-temperature-programmed reduction studies. Microwave absorption by the Cu-Mn spinel oxide is mainly driven by dielectric losses (dielectric heating). Cu-Mn spinel oxide with a Cu/Mn ratio of 1 exhibited superior activity to single oxides under microwave heating, demonstrating lower apparent activation energy than that obtained under conventional heating. Microwave irradiation lowered the reaction temperature required for benzene oxidation compared with conventional heating. Transient tests were used to investigate the reactivity of oxygen species in the catalytic reaction, and the high reactivity of Cu-Mn spinel oxides was related to the high reactivity of lattice oxygen on the catalyst surface. The reactivity of the oxygen species was enhanced under microwave heating, leading to an enhanced benzene oxidation reaction. The combination of adsorption and catalytic oxidation processes using Cu-Mn spinel oxides and zeolites efficiently decomposed benzene at low concentrations.
Collapse
Affiliation(s)
- Siyu Ding
- Department of Molecular and Material Sciences, Graduate School of Engineering Sciences, Kyushu University, 6-1, Kasugakoen, Kasuga, Fukuoka 816-8580, Japan
| | - Chen Zhu
- Department of Molecular and Material Sciences, Graduate School of Engineering Sciences, Kyushu University, 6-1, Kasugakoen, Kasuga, Fukuoka 816-8580, Japan
| | - Hajime Hojo
- Department of Material Sciences, Faculty of Engineering Sciences, Kyushu University, 6-1, Kasugakoen, Kasuga, Fukuoka 816-8580, Japan
| | - Hisahiro Einaga
- Department of Material Sciences, Faculty of Engineering Sciences, Kyushu University, 6-1, Kasugakoen, Kasuga, Fukuoka 816-8580, Japan.
| |
Collapse
|
5
|
Yang H, Yan B, Meng L, Jiao X, Huang J, Gao W, Zhao J, Zhang H, Chen W, Fan D. Mathematical modeling of continuous microwave heating of surimi paste. J FOOD ENG 2022. [DOI: 10.1016/j.jfoodeng.2021.110797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
6
|
Abstract
In the present review article, the definitions and the most advanced findings within Process Intensification are collected and discussed. The intention is to give the readers the basic concepts, fixing the syllabus, as well as some relevant application examples of a discipline that is well-established and considered a hot topic in the chemical reaction engineering field at present.
Collapse
|
7
|
Julian I, Pedersen C, Jensen A, Baden A, Hueso J, Friderichsen A, Birkedal H, Mallada R, Santamaria J. From bench scale to pilot plant: A 150x scaled-up configuration of a microwave-driven structured reactor for methane dehydroaromatization. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.04.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
8
|
Siddique F, Mirzaei A, Gonzalez-Cortes S, Slocombe D, Al-Megren HA, Xiao T, Rafiq MA, Edwards PP. Sustainable chemical processing of flowing wastewater through microwave energy. CHEMOSPHERE 2022; 287:132035. [PMID: 34474383 DOI: 10.1016/j.chemosphere.2021.132035] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/21/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
Iron oxide nanostructured catalysts have emerged as potential candidates for efficient energy conversion and electrochemical energy storage devices. However, synthesis and design of nanomaterial plays a key role in its performance and efficiency. Herein, we describe a one-pot solution combustion synthesis (SCS) of α-Fe2O3 with glycine as a fuel, and a subsequent reduction step to produce iron-containing catalysts (i.e., Fe3O4, Fe-Fe3O4, and Fe0). The synthesized iron-based nanoparticles were investigated for methyl orange (MO) degradation through Microwave (MW) energy under continuous flow conditions. Fe-Fe3O4 showed higher MO degradation efficiency than α-Fe2O3, Fe3O4 and Fe0 at low absorbed MW power (i.e. 5-80 W). The enhanced degradation efficiency is associated to the combination of higher availability of electron density and higher heating effect under MW energy. Investigation of dielectric properties showed relative dielectric loss of Fe3O4, Fe-Fe3O4, and Fe0 as 3847, 2010, and 1952, respectively. The calculated average local temperature by the comparative analysis of MW treatment with conventional thermal (CT) treatment showed a marked thermal effect of MW-initiated MO degradation. This work highlights the potential of microwave-driven water depollution under continuous-flow processing conditions and demonstrates the positive impact that earth-abundant Fe catalyst synthesized by green SCS method can have over the treatment of wastewater.
Collapse
Affiliation(s)
- Fizza Siddique
- Department of Physics and Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad, 45650, Pakistan
| | - Amir Mirzaei
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, H3G 1M8, Canada
| | - Sergio Gonzalez-Cortes
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK.
| | - Daniel Slocombe
- School of Engineering, Cardiff University, Queen's Buildings, The Parade, Cardiff, CF24 3AA, UK
| | - Hamid A Al-Megren
- Materials Division, King Abdulaziz City for Science and Technology, Riyadh, 11442, Kingdom of Saudi Arabia
| | - Tiancun Xiao
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK.
| | - M A Rafiq
- Department of Physics and Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad, 45650, Pakistan.
| | - Peter P Edwards
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK.
| |
Collapse
|
9
|
Reverse traveling microwave reactor – Modelling and design considerations. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2021.116862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
10
|
Malhotra A, Chen W, Goyal H, Plaza-Gonzalez PJ, Julian I, Catala-Civera JM, Vlachos DG. Temperature Homogeneity under Selective and Localized Microwave Heating in Structured Flow Reactors. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05580] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Abhinav Malhotra
- Delaware Energy Institute, University of Delaware, 221 Academy Street, Newark, Delaware 19716, United States
| | - Weiqi Chen
- Delaware Energy Institute, University of Delaware, 221 Academy Street, Newark, Delaware 19716, United States
| | - Himanshu Goyal
- Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu 600036, India
| | | | - Ignacio Julian
- Instituto de Nanociencia y Materiales de Aragón (INMA), Consejo Superior de Investigaciones Científicas, CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
| | | | - Dionisios G. Vlachos
- Delaware Energy Institute, University of Delaware, 221 Academy Street, Newark, Delaware 19716, United States
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States
| |
Collapse
|
11
|
Migliorini F, Dei F, Calamante M, Maramai S, Petricci E. Micellar Catalysis for Sustainable Hydroformylation. ChemCatChem 2021. [DOI: 10.1002/cctc.202100181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Francesca Migliorini
- Department of Biochemistry Chemistry and Pharmacy University of Siena Via A. Moro 53100 Siena Italy
| | - Filippo Dei
- Department of Biochemistry Chemistry and Pharmacy University of Siena Via A. Moro 53100 Siena Italy
| | - Massimo Calamante
- CNR – ICCOM Dipartimento di Chimica Università degli Studi di Firenze Via Madonna del Piano, 10 50019 Sesto Fiorentino Firenze Italy
| | - Samuele Maramai
- Department of Biochemistry Chemistry and Pharmacy University of Siena Via A. Moro 53100 Siena Italy
| | - Elena Petricci
- Department of Biochemistry Chemistry and Pharmacy University of Siena Via A. Moro 53100 Siena Italy
| |
Collapse
|
12
|
Abdelsayed V, Shekhawat D, Tempke RS. Zeolites interactions with microwaves during methane non-oxidative coupling. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.06.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
13
|
Mbuya COL, Jewell LL, Ntelane TS, Scurrell MS. The effect of microwave irradiation on heterogeneous catalysts for Fischer–Tropsch synthesis. REV CHEM ENG 2021. [DOI: 10.1515/revce-2020-0017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The work that has been carried out on microwave irradiation applied in catalyst preparation for drying, calcination or postsynthesis methods, and as a heating source for the Fischer–Tropsch reaction has been reviewed. It has been found that microwave irradiation can, in some cases, greatly enhance the performance of heterogeneous catalyst systems for Fischer–Tropsch synthesis. We have also summarized the advantages and drawbacks of using microwave irradiation in Fischer–Tropsch catalyst preparation and postsynthesis, and identified opportunities for future investigation.
Collapse
Affiliation(s)
- Christel Olivier Lenge Mbuya
- Department of Civil and Chemical Engineering , University of South Africa (UNISA) , Cnr Christiaan de Wet and Pioneer Street , Johannesburg 1710 , South Africa
| | - Linda L. Jewell
- Department of Civil and Chemical Engineering , University of South Africa (UNISA) , Cnr Christiaan de Wet and Pioneer Street , Johannesburg 1710 , South Africa
| | - Tau S. Ntelane
- Department of Civil and Chemical Engineering , University of South Africa (UNISA) , Cnr Christiaan de Wet and Pioneer Street , Johannesburg 1710 , South Africa
| | - Mike S. Scurrell
- Department of Civil and Chemical Engineering , University of South Africa (UNISA) , Cnr Christiaan de Wet and Pioneer Street , Johannesburg 1710 , South Africa
| |
Collapse
|
14
|
Microwave heating in heterogeneous catalysis: Modelling and design of rectangular traveling-wave microwave reactor. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2020.116383] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
15
|
|
16
|
Tsubaki S, Higuchi T, Matsuzawa T, Fujii S, Nishioka M, Wada Y. Real-Time Facile Detection of the WO 3 Catalyst Oxidation State under Microwaves Using a Resonance Frequency. ACS OMEGA 2020; 5:31957-31962. [PMID: 33344850 PMCID: PMC7745404 DOI: 10.1021/acsomega.0c04862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 11/13/2020] [Indexed: 06/12/2023]
Abstract
Microwaves (MWs) are often used to enhance various heterogeneous catalytic reactions. Here, we demonstrate real-time monitoring of a catalyst's oxidation state in a microwave catalytic reaction using a resonance frequency. The changes in the catalyst's oxidation state during the reaction induced changes in the resonance frequency in the cavity resonator. The resonance frequency was not affected by 2-propanol adsorption, while the frequency decreased with the reduction of WO3 → WO3-x. That is, the redox state of the WO3 catalyst could be detected using the resonance frequency. The oxidation state of the WO3 catalyst was then directly observed by the resonance frequency during the dehydration reaction of 2-propanol by microwaves as a model reaction. Resonance frequency monitoring revealed that the enhanced dehydration of 2-propanol by microwaves was attributable to the reduction of the WO3 catalyst. Moreover, the temporal changes in the oxidation state of the WO3 catalyst detected by the resonance frequency coincided with that observed by operando Raman spectroscopy. Therefore, real-time resonance frequency monitoring allowed facile detection of the bulk catalyst oxidation state under microwaves without using any spectroscopic apparatus.
Collapse
Affiliation(s)
- Shuntaro Tsubaki
- School
of Materials and Chemical Technology, Tokyo
Institute of Technology, E4-3, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
- PRESTO,
Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Tomoki Higuchi
- School
of Materials and Chemical Technology, Tokyo
Institute of Technology, E4-3, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tomoki Matsuzawa
- School
of Materials and Chemical Technology, Tokyo
Institute of Technology, E4-3, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Satoshi Fujii
- School
of Materials and Chemical Technology, Tokyo
Institute of Technology, E4-3, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
- Department
of Information and Communication Systems Engineering, National Institute of Technology Okinawa College, 905 Henoko, Nago-shi, Okinawa 905-2192, Japan
| | - Masateru Nishioka
- National
Institute of Advanced Industrial Science and Technology, 4-2-1, Nigatake, Miyagino-ku, Sendai 983-8551, Japan
| | - Yuji Wada
- School
of Materials and Chemical Technology, Tokyo
Institute of Technology, E4-3, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
- Institute
of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503 Japan
| |
Collapse
|
17
|
Ano T, Tsubaki S, Liu A, Matsuhisa M, Fujii S, Motokura K, Chun WJ, Wada Y. Probing the temperature of supported platinum nanoparticles under microwave irradiation by in situ and operando XAFS. Commun Chem 2020; 3:86. [PMID: 36703448 PMCID: PMC9814256 DOI: 10.1038/s42004-020-0333-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 06/17/2020] [Indexed: 01/29/2023] Open
Abstract
Microwave irradiation can cause high local temperatures at supported metal nanoparticles, which can enhance reaction rates. Here we discuss the temperature of platinum nanoparticles on γ-Al2O3 and SiO2 supports under microwave irradiation using the Debye-Waller factor obtained from in situ extended X-ray absorption fine structure (EXAFS) measurements. Microwave irradiation exhibits considerably smaller Deby-Waller factors than conventional heating, indicating the high local temperature at the nanoparticles. The difference in the average temperatures between the platinum nanoparticles and the bulk under microwaves reaches 26 K and 132 K for Pt/Al2O3 and Pt/SiO2, respectively. As a result, Pt/SiO2 exhibits considerably more reaction acceleration for the catalytic dehydrogenation of 2-propanol under microwave irradiation than Pt/Al2O3. We also find microwaves enhance the reduction of PtOx nanoparticles by using operando X-ray absorption near edge structure (XANES) spectroscopy. The present results indicate that significant local heating of platinum nanoparticles by microwaves is effective for the acceleration of catalytic reactions.
Collapse
Affiliation(s)
- Taishi Ano
- grid.32197.3e0000 0001 2179 2105School of Materials and Chemical Technology, Tokyo Institute of Technology, E4-3, 2-12-1, Ookayama, Meguro, Tokyo, 152-8552 Japan
| | - Shuntaro Tsubaki
- grid.32197.3e0000 0001 2179 2105School of Materials and Chemical Technology, Tokyo Institute of Technology, E4-3, 2-12-1, Ookayama, Meguro, Tokyo, 152-8552 Japan ,grid.419082.60000 0004 1754 9200PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012 Japan
| | - Anyue Liu
- grid.32197.3e0000 0001 2179 2105School of Materials and Chemical Technology, Tokyo Institute of Technology, E4-3, 2-12-1, Ookayama, Meguro, Tokyo, 152-8552 Japan
| | - Masayuki Matsuhisa
- grid.32197.3e0000 0001 2179 2105School of Materials and Chemical Technology, Tokyo Institute of Technology, E4-3, 2-12-1, Ookayama, Meguro, Tokyo, 152-8552 Japan
| | - Satoshi Fujii
- grid.32197.3e0000 0001 2179 2105School of Materials and Chemical Technology, Tokyo Institute of Technology, E4-3, 2-12-1, Ookayama, Meguro, Tokyo, 152-8552 Japan ,grid.471922.b0000 0004 4672 6261Department of Information and Communication Systems Engineering, National Institute of Technology Okinawa College, 905 Henoko, Nago, Okinawa, 905-2192 Japan
| | - Ken Motokura
- grid.32197.3e0000 0001 2179 2105School of Materials and Chemical Technology, Tokyo Institute of Technology, E4-3, 2-12-1, Ookayama, Meguro, Tokyo, 152-8552 Japan
| | - Wang-Jae Chun
- grid.411724.5Graduate School of Arts and Sciences, International Christian University, 3-10-2 Osawa, Mitaka, Tokyo, 181-8585 Japan
| | - Yuji Wada
- grid.32197.3e0000 0001 2179 2105School of Materials and Chemical Technology, Tokyo Institute of Technology, E4-3, 2-12-1, Ookayama, Meguro, Tokyo, 152-8552 Japan
| |
Collapse
|
18
|
Chen RJ, Qiao N, Arowo M, Zou HK, Chu GW, Luo Y, Sun BC, Chen JF. Modeling for Temperature Distribution of Water in a Multiwaveguide Microwave Reactor. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b04748] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ru-Jia Chen
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, P.O. Box 35, No. 15 Bei San Huan Dong Road, Beijing 100029, China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, No. 15 Bei San Huan Dong Road, Beijing 100029, China
| | - Ning Qiao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, P.O. Box 35, No. 15 Bei San Huan Dong Road, Beijing 100029, China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, No. 15 Bei San Huan Dong Road, Beijing 100029, China
| | - Moses Arowo
- Department of Chemical & Process Engineering, Moi University, Eldoret 3900-30100, Kenya
| | - Hai-Kui Zou
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, No. 15 Bei San Huan Dong Road, Beijing 100029, China
| | - Guang-Wen Chu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, P.O. Box 35, No. 15 Bei San Huan Dong Road, Beijing 100029, China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, No. 15 Bei San Huan Dong Road, Beijing 100029, China
| | - Yong Luo
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, No. 15 Bei San Huan Dong Road, Beijing 100029, China
| | - Bao-Chang Sun
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, No. 15 Bei San Huan Dong Road, Beijing 100029, China
| | - Jian-Feng Chen
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, P.O. Box 35, No. 15 Bei San Huan Dong Road, Beijing 100029, China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, No. 15 Bei San Huan Dong Road, Beijing 100029, China
| |
Collapse
|
19
|
Drastic Microwave Heating of Percolated Pt Metal Nanoparticles Supported on Al2O3 Substrate. Processes (Basel) 2020. [DOI: 10.3390/pr8010072] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Microwave (MW) heating of supported metal nanoparticles (NPs) presents attractive effects on catalysis such as the rapid heating processes and the enhancement of the reaction rate. Improving the heating property of the NPs, which act as the catalytic active sites, the MW effects will become more significant. Here we show a systematic study about the supported Pt NPs structure to improve the MW heating property. We found that the drastic heating was induced by a percolated Pt NPs structure, where the conduction electrons move around in the two-dimensional network. On the other hand, no heating was observed in an isolated Pt NPs system with the confined electrons. We conclude that the percolation of the Pt NPs giving the network structure is one of the important key factors for the efficient MW heating. The optimized Pt NPs catalyst leads to the dramatic MW effects on catalytic reactions.
Collapse
|
20
|
Zhu J, Xu W, Chen J, Gan Z, Wang X, Zhou J. Development of core–shell structured Mo 2C@BN as novel microwave catalysts for highly effective direct decomposition of H 2S into H 2 and S at low temperature. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01145b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Direct decomposition of hydrogen sulfide is an attractive approach for producing COx-free H2 and S from a toxic and abundant waste gas.
Collapse
Affiliation(s)
- Jun Zhu
- 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
| | - Jianan Chen
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province
- School of Chemical Engineering
- Xiangtan University
- Xiangtan 411105
- P.R.China
| | - Zhaowang Gan
- Key Laboratory of Green Catalysis and Chemical Reaction Engineering of Hunan Province
- School of Chemical Engineering
- Xiangtan University
- Xiangtan 411105
- P.R.China
| | - Xianyou Wang
- National Base for International Science and Technology Cooperation
- School of Chemistry
- Xiangtan University
- Xiangtan
- 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
| |
Collapse
|
21
|
|
22
|
Abstract
Microwave-assisted pyrolysis is a promising thermochemical technique to convert waste polymers and biomass into raw chemicals and fuels. However, this process involves several issues related to the interactions between materials and microwaves. Consequently, the control of temperature during microwave-assisted pyrolysis is a hard task both for measurement and uniformity during the overall pyrolytic run. In this review, we introduce some of the main theoretical aspects of the microwaves–materials interactions alongside the issues related to microwave pyrolytic processability of materials.
Collapse
|
23
|
Temperature Assessment Of Microwave-Enhanced Heating Processes. Sci Rep 2019; 9:10809. [PMID: 31346250 PMCID: PMC6658534 DOI: 10.1038/s41598-019-47296-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 07/12/2019] [Indexed: 11/29/2022] Open
Abstract
In this study, real-time and in-situ permittivity measurements under intense microwave electromagnetic fields are proposed as a powerful technique for the study of microwave-enhanced thermal processes in materials. In order to draw reliable conclusions about the temperatures at which transformations occur, we address how to accurately measure the bulk temperature of the samples under microwave irradiation. A new temperature calibration method merging data from four independent techniques is developed to obtain the bulk temperature as a function of the surface temperature in thermal processes under microwave conditions. Additionally, other analysis techniques such as Differential Thermal Analysis (DTA) or Raman spectroscopy are correlated to dielectric permittivity measurements and the temperatures of thermal transitions observed using each technique are compared. Our findings reveal that the combination of all these procedures could help prove the existence of specific non-thermal microwave effects in a scientifically meaningful way.
Collapse
|
24
|
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.
Collapse
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
| |
Collapse
|
25
|
Stankiewicz A, Sarabi FE, Baubaid A, Yan P, Nigar H. Perspectives of Microwaves-Enhanced Heterogeneous Catalytic Gas-Phase Processes in Flow Systems. CHEM REC 2018; 19:40-50. [PMID: 30106499 DOI: 10.1002/tcr.201800070] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 07/27/2018] [Indexed: 11/11/2022]
Abstract
The paper discusses the currents status and future perspectives of the utilization of microwaves, as a selective and locally controlled heating method, in heterogeneous catalytic flow reactors. Various factors related to the microwave-catalyst interaction and the design of microwave-assisted catalytic reactor systems are analyzed. The analysis clearly shows the superiority of the traveling-wave systems over the mono-mode and multi-mode cavity-based systems when it comes to the design and application of microwave flow reactors at relevant production scales.
Collapse
Affiliation(s)
- Andrzej Stankiewicz
- Process & Energy department, Delft University of Technology, Leegwaterstraat 39, 2628 CB, Delft, The Netherlands Department
| | - Farnaz Eghbal Sarabi
- Process & Energy department, Delft University of Technology, Leegwaterstraat 39, 2628 CB, Delft, The Netherlands Department
| | - Abdul Baubaid
- Process & Energy department, Delft University of Technology, Leegwaterstraat 39, 2628 CB, Delft, The Netherlands Department
| | - Peng Yan
- Process & Energy department, Delft University of Technology, Leegwaterstraat 39, 2628 CB, Delft, The Netherlands Department.,School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Hakan Nigar
- Process & Energy department, Delft University of Technology, Leegwaterstraat 39, 2628 CB, Delft, The Netherlands Department
| |
Collapse
|
26
|
Petricci E, Risi C, Ferlin F, Lanari D, Vaccaro L. Avoiding hot-spots in Microwave-assisted Pd/C catalysed reactions by using the biomass derived solvent γ-Valerolactone. Sci Rep 2018; 8:10571. [PMID: 30002506 PMCID: PMC6043498 DOI: 10.1038/s41598-018-28458-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 06/15/2018] [Indexed: 01/19/2023] Open
Abstract
Herein, we report the use of γ-valerolactone as a new biomass-derived reaction medium for microwave assisted organic synthesis. The interaction of this solvent with microwaves and its heating profile under microwave irradiation has been fully characterized for the first time, demonstrating its stability and the applicability in microwave assisted Pd/C catalysed reactions avoiding the arcing phenomena frequently observed in these conditions. The use of γ-valerolactone demonstrated to be compatible with aliphatic and aromatic amines in the hydrogen transfer Pd/C mediated synthesis of benzimidazoles.
Collapse
Affiliation(s)
- Elena Petricci
- Università degli Studi di Siena, Dipartimento di Biotecnologie, Chimica e Farmacia, Siena, 53100, Italy.
| | - Caterina Risi
- Università degli Studi di Siena, Dipartimento di Biotecnologie, Chimica e Farmacia, Siena, 53100, Italy
| | - Francesco Ferlin
- Università di Perugia, Laboratory of Green Synthetic Organic Chemistry, Dipartimento di Chimica, Biologia e Biotecnologie, Perugia, 06123, Italy
| | - Daniela Lanari
- Università di Perugia, Dipartimento di Scienze Farmaceutiche, Perugia, 06123, Italy
| | - Luigi Vaccaro
- Università di Perugia, Laboratory of Green Synthetic Organic Chemistry, Dipartimento di Chimica, Biologia e Biotecnologie, Perugia, 06123, Italy.
| |
Collapse
|
27
|
Nguyen HM, Pham GH, Ran R, Vagnoni R, Pareek V, Liu S. Dry reforming of methane over Co–Mo/Al2O3 catalyst under low microwave power irradiation. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01601a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
In this work, microwave (MW) irradiation was used to activate Co/Al2O3, Mo/Al2O3, and Co–Mo/Al2O3 catalysts for dry reforming of methane (DRM) reactions.
Collapse
Affiliation(s)
- Hoang M. Nguyen
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | - Gia Hung Pham
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | - Ran Ran
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | | | - Vishnu Pareek
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | - Shaomin Liu
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| |
Collapse
|