1
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Wu Z, Ma S, Weng S, Liu H, Jin Z, Jiang X. Mechanistic Insights into the Direct Deoxygenation of Phenolic Compounds over Novel Heusler Alloy Catalysts. ACS APPLIED MATERIALS & INTERFACES 2024; 16:38111-38123. [PMID: 39007495 DOI: 10.1021/acsami.4c07453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
The catalytic deoxygenation of phenolic compounds is a crucial step in the valorization of biomass resources, which can effectively enhance the heating value and stability of primary biofuel. In this study, the catalytic mechanism of four Heusler alloy catalysts for the direct deoxidation pathway of phenol was studied through electronic structure regulation by element occupation. We found that Heusler alloys catalysts exhibit excellent catalytic activity in the dissociation activation of H2 and the cleavage of aryl hydroxyl bond (CAr-OH) bonds. The energy barriers for the direct cleavage of the CAr-OH bond in phenol on Ni2MoAl, Co2MoAl, Ni2NbAl and Ni2MoGa catalysts are 0.86, 0.95, 1.09, and 1.28 eV, respectively. And Y element of the X2YZ catalyst has a significant impact on this reaction, while the X element has a complex influence on the hydrogenation step of the unsaturated benzene ring. Microkinetic analysis further substantiates that the phenol (CAr-OH) bond cleavage step in the reaction exhibits a fast reaction rate and high extent of reaction. The reaction of hydroxyl hydrogenation to produce water exhibits the highest energy barrier, serving as the rate-determining step of the entire reaction. This issue could potentially be addressed by further fine-tuning the electronic structure.
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Affiliation(s)
- Zewen Wu
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
- College of Carbon Neutrality Future Technology, Sichuan University, Chengdu 610065, China
| | - Shenggui Ma
- College of Carbon Neutrality Future Technology, Sichuan University, Chengdu 610065, China
- Tianfu Yongxing Laboratory, Chengdu 610213, China
| | - Shuxian Weng
- Tianfu Yongxing Laboratory, Chengdu 610213, China
| | - Hongying Liu
- Tianfu Yongxing Laboratory, Chengdu 610213, China
| | - Ziheng Jin
- College of Carbon Neutrality Future Technology, Sichuan University, Chengdu 610065, China
- Tianfu Yongxing Laboratory, Chengdu 610213, China
| | - Xia Jiang
- College of Carbon Neutrality Future Technology, Sichuan University, Chengdu 610065, China
- Tianfu Yongxing Laboratory, Chengdu 610213, China
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2
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Aviziotis IG, Manasi A, Ntziouni A, Gakis GP, Trompeta AFA, Li X, Dong H, Charitidis CA. Growth of Carbon Nanofibers and Carbon Nanotubes by Chemical Vapour Deposition on Half-Heusler Alloys: A Computationally Driven Experimental Investigation. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3144. [PMID: 38998227 PMCID: PMC11242464 DOI: 10.3390/ma17133144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Revised: 06/17/2024] [Accepted: 06/21/2024] [Indexed: 07/14/2024]
Abstract
The possibility of directly growing carbon nanofibers (CNFs) and carbon nanotubes (CNTs) on half-Heusler alloys by Chemical Vapour Deposition (CVD) is investigated for the first time, without using additional catalysts, since the half-Heusler alloys per se may function as catalytic substrates, according to the findings of the current study. As a carbon source, acetylene is used in the temperature range of 700-750 °C. The n-type half-Heusler compound Zr0.4Ti0.60.33Ni0.33Sn0.98Sb0.020.33 is utilized as the catalytic substrate. At first, a computational model is developed for the CVD reactor, aiming to optimize the experimental process design and setup. The experimental process conditions are simulated to investigate the reactive species concentrations within the reactor chamber and the activation of certain reactions. SEM analysis confirms the growth of CNFs with diameters ranging from 450 nm to 1 μm. Raman spectroscopy implies that the formed carbon structures resemble CNFs rather than CNTs, and that amorphous carbon also co-exists in the deposited samples. From the characterization results, it may be concluded that a short reaction time and a low acetylene flow rate lead to the formation of a uniform CNF coating on the surface of half-Heusler alloys. The purpose of depositing carbon nanostructures onto half-Heusler alloys is to improve the current transfer, generated from these thermoelectric compounds, by forming a conductive coating on their surface.
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Affiliation(s)
- Ioannis G Aviziotis
- Research Lab of Advanced, Composite, Nano-Materials and Nanotechnology, Materials Science and Engineering Department, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechneiou Street, 15780 Athens, Greece
| | - Apostolia Manasi
- Research Lab of Advanced, Composite, Nano-Materials and Nanotechnology, Materials Science and Engineering Department, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechneiou Street, 15780 Athens, Greece
| | - Afroditi Ntziouni
- Research Lab of Advanced, Composite, Nano-Materials and Nanotechnology, Materials Science and Engineering Department, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechneiou Street, 15780 Athens, Greece
| | - Georgios P Gakis
- Research Lab of Advanced, Composite, Nano-Materials and Nanotechnology, Materials Science and Engineering Department, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechneiou Street, 15780 Athens, Greece
| | - Aikaterini-Flora A Trompeta
- Research Lab of Advanced, Composite, Nano-Materials and Nanotechnology, Materials Science and Engineering Department, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechneiou Street, 15780 Athens, Greece
| | - Xiaoying Li
- School of Metallurgy and Materials, University of Birmingham, Birmingham B15 2TT, UK
| | - Hanshan Dong
- School of Metallurgy and Materials, University of Birmingham, Birmingham B15 2TT, UK
| | - Costas A Charitidis
- Research Lab of Advanced, Composite, Nano-Materials and Nanotechnology, Materials Science and Engineering Department, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechneiou Street, 15780 Athens, Greece
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3
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Kojima T, Nakaya Y, Tate S, Kameoka S, Furukawa S. Co 2 FeGe Heusler Alloy Nanoparticle Catalysts for Propyne Hydrogenation and Ammonia Decomposition. ChemistryOpen 2023; 12:e202300131. [PMID: 37932911 PMCID: PMC10628335 DOI: 10.1002/open.202300131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/26/2023] [Indexed: 11/08/2023] Open
Abstract
Heusler alloys (X2 YZ) can be a candidate for new catalysts as well as other intermetallic compounds. We previously found good catalytic properties of Co2 FeGe for selective hydrogenation of alkynes and developed nanoparticles of Co2 FeGe supported on SiO2 . However, the average diameter of the nanoparticles was 23 nm, which is not small enough compared to those of state-of-the-art nanoparticle catalysts. In this study, we developed SiO2 -supported Co2 FeGe nanoparticles of <10 nm in diameter. A catalytic test for selective hydrogenation of propyne indicated a partial formation of sites with low selectivity including excess Co atoms. For ammonia decomposition, enhancement of turnover frequency was achieved by reducing the particle size.
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Affiliation(s)
- Takayuki Kojima
- Division of Chemistry and MaterialsFaculty of Textile Science and TechnologyShinshu University3-15-1, TokidaUedaNagano386-8567Japan
| | - Yuki Nakaya
- Institute for CatalysisHokkaido UniversityN21, W10Sapporo001-0021Japan
| | - Souta Tate
- Division of Chemistry and MaterialsFaculty of Textile Science and TechnologyShinshu University3-15-1, TokidaUedaNagano386-8567Japan
| | - Satoshi Kameoka
- Institute of Multidisciplinary Research for Advanced MaterialsTohoku University2-1-1, Katahira, Aoba-kuSendai980-8577Japan
| | - Shinya Furukawa
- Institute for CatalysisHokkaido UniversityN21, W10Sapporo001-0021Japan
- Present address: Division of Applied ChemistryGraduate School of EngineeringOsaka University (Japan)
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4
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Islam MAU, Islam MR, das O, Kato S, Kishi N, Soga T. First-Principles Calculations to Investigate the Stability and Thermodynamic Properties of a Newly Exposed Lithium-Gallium-Iridium-Based Full-Heusler Compound. ACS OMEGA 2023; 8:21885-21897. [PMID: 37360439 PMCID: PMC10286260 DOI: 10.1021/acsomega.3c01534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 05/15/2023] [Indexed: 06/28/2023]
Abstract
The structural, optical, electrical, thermodynamic, superconducting, and mechanical characteristics of LiGa2Ir full-Heusler alloys with the MnCu2Al configuration were comprehensively examined in this work using the first-principles computation approach premised upon density functional analysis. This theoretical approach is the first to investigate the influence of pressure on the mechanical and optical characteristics of LiGa2Ir. The structural and chemical bonding analysis shows that hydrostatic pressure caused a decrease in the lattice constant, volume, and bond length of each cell. According to the mechanical property calculations, the LiGa2Ir cubic Heusler alloy exhibits mechanical stability. It also has ductility and anisotropic behavior. This metallic substance shows no band gap throughout the applied pressure range. The physical characteristics of the LiGa2Ir full-Heusler alloy are analyzed in the operating pressure range of 0-10 GPa. The quasi-harmonic Debye model is employed to analyze thermodynamic properties. The Debye temperature (291.31 K at 0 Pa) increases with hydrostatic pressure. A newly invented structure attracted a lot of attention around the globe for its superior superconductivity (Tc ∼ 2.95 K). Optical functions have also been improved after applying stress to utilize it in optoelectronic/nanoelectric devices. The optical function analysis is supported strongly by the electronic properties. Due to these reasons, LiGa2Ir imposed an essential guiding principle for relevant future research and could be a credible candidate substance for industrial settings.
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Affiliation(s)
- Md. Arif Ul Islam
- Department
of Physics, University of Barishal, Barishal 8200, Bangladesh
- Department
of Electrical and Mechanical Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Md. Rasidul Islam
- Department
of Electrical and Electronic Engineering, Bangamata Sheikh Fojilatunnesa Mujib Science & Technology University, Jamalpur 2012, Bangladesh
| | - Ovijit das
- Department
of Materials Science and Engineering, Khulna
University of Engineering & Technology, Khulna 9203, Bangladesh
| | - Shinya Kato
- Department
of Electrical and Mechanical Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Naoki Kishi
- Department
of Electrical and Mechanical Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Tetsuo Soga
- Department
of Electrical and Mechanical Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
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5
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Nakaya Y, Furukawa S. Catalysis of Alloys: Classification, Principles, and Design for a Variety of Materials and Reactions. Chem Rev 2022; 123:5859-5947. [PMID: 36170063 DOI: 10.1021/acs.chemrev.2c00356] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Alloying has long been used as a promising methodology to improve the catalytic performance of metallic materials. In recent years, the field of alloy catalysis has made remarkable progress with the emergence of a variety of novel alloy materials and their functions. Therefore, a comprehensive disciplinary framework for catalytic chemistry of alloys that provides a cross-sectional understanding of the broad research field is in high demand. In this review, we provide a comprehensive classification of various alloy materials based on metallurgy, thermodynamics, and inorganic chemistry and summarize the roles of alloying in catalysis and its principles with a brief introduction of the historical background of this research field. Furthermore, we explain how each type of alloy can be used as a catalyst material and how to design a functional catalyst for the target reaction by introducing representative case studies. This review includes two approaches, namely, from materials and reactions, to provide a better understanding of the catalytic chemistry of alloys. Our review offers a perspective on this research field and can be used encyclopedically according to the readers' individual interests.
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Affiliation(s)
- Yuki Nakaya
- Institute for Catalysis, Hokkaido University, N-21, W-10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
| | - Shinya Furukawa
- Institute for Catalysis, Hokkaido University, N-21, W-10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan.,Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency, Chiyoda, Tokyo 102-0076, Japan
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6
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Mebed AM, Mushtaq M, Faizan M, Neffati R, Laref A, Godara S, Maqbool S. Adsorption of CO over the Heusler alloy CrCoIrGa(001) surface: first-principles insights. RSC Adv 2022; 12:17853-17863. [PMID: 35765326 PMCID: PMC9201509 DOI: 10.1039/d2ra03043h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 06/09/2022] [Indexed: 11/26/2022] Open
Abstract
In this study, the adsorption of CO molecule over (001) surface of the Heusler alloy CrCoIrGa, has been investigated using DFT+U calculations. It is demonstrated that, after relaxation, the (001) surface retains the bulk atomic positions, exhibiting no apparent surface reconstruction. Owing to the emergence of unsaturated bonds at the surface, the surface layer atoms are found to carry more spin-polarization (SP) and atomic moments than that of inner layer atoms. The ground state total SP (magnetic moment) is found to be 27% (42.256 μB). To explore the CO adsorption over the surface, five different adsorption configurations (sites) are considered and the strength of CO to surface interaction is estimated from the computed density of states (DOS), adsorption energy (Ea), change in magnetic moment (ΔM), vertical height between molecule and surface (h), charge transfer (ΔQ), and charge density difference (CDD) plots. For all configurations, the Ea lies in the range of −2.15 to −2.34 eV, with CO molecule adsorbed on the top of Ir atom as the most favorable adsorption configuration. The observed Ea, ΔQ, h, and ΔM values, collectively predict that the (001) surface has strong interaction (chemisorption) with CO gas molecule, thus, might be useful in gas sensing applications. Charge density difference (CDD) plots for CO adsorbed at various sites of the CrCoIrGa(001) surface. The yellow (cyan) color represents the charge accumulation (depletion) region.![]()
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Affiliation(s)
- Abdelazim M Mebed
- Department of Physics, College of Science, Jouf University Al-Jouf, Sakaka P. O. Box 2014 Saudi Arabia.,Physics Department, Faculty of Science, Assuit University Assuit 71516 Egypt
| | - Muhammad Mushtaq
- Department of Physics, University of Poonch Rawalakot 12350 Pakistan
| | - Muhammad Faizan
- Department of Physics, University of Peshawar Peshawar 25120 Pakistan
| | - Riadh Neffati
- Department of Physics, King Khalid University P. Box 9032 Abha 61413 Kingdom of Saudi Arabia
| | - Amel Laref
- Department of Physics and Astronomy, College of Science, King Saud University Riyadh Saudi Arabia
| | | | - Sana Maqbool
- Department of Physics, Fatima Jinnah Women University Rawalpindi 46000 Pakistan
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7
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Iwase K, Kojima T, Todoroki N, Honma I. Activity switching of Sn and In species in Heusler alloys for electrochemical CO 2 reduction. Chem Commun (Camb) 2022; 58:4865-4868. [PMID: 35348559 DOI: 10.1039/d2cc00754a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electrochemical CO2 reduction reaction (CO2RR) activity of Ni2MnIn and Ni2MnSn Heusler alloys was investigated. Although pure In, Sn and Ni2MnIn generated formate as the major product, Ni2MnSn generated H2 as the major product. The CO2RR selectivity could be controlled by selecting the constituent elements of the intermetallic catalysts.
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Affiliation(s)
- Kazuyuki Iwase
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan.
| | - Takayuki Kojima
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan. .,Faculty of Textile Science and Technology, Shinshu University, 3-15-1, Tokida, Ueda, Nagano 386-8567, Japan.,Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, 6-3, Aramaki aza Aoba, Aoba-ku, Sendai, Miyagi, 980-8578, Japan
| | - Naoto Todoroki
- Graduate School of Environmental Studies, Tohoku University, 6-6-2 Aobayama, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Itaru Honma
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan.
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8
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Köwitsch N, Barth S, Ploner K, Blume R, Teschner D, Penner S, Armbrüster M. Properties of Bulk In-Pt Intermetallic Compounds in Methanol Steam Reforming. Chemphyschem 2022; 23:e202200074. [PMID: 35312211 PMCID: PMC9311744 DOI: 10.1002/cphc.202200074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/03/2022] [Indexed: 11/15/2022]
Abstract
Heterogeneous catalysts are often complex materials containing different compounds. While this can lead to highly beneficial interfaces, it is difficult to identify the role of single components. In methanol steam reforming (MSR), the interplay between intermetallic compounds, supporting oxides and redox reactions leads to highly active and CO2‐selective materials. Herein, the intrinsic catalytic properties of unsupported In3Pt2, In2Pt, and In7Pt3 as model systems for Pt/In2O3‐based catalytic materials in MSR are addressed. In2Pt was identified as the essential compound responsible for the reported excellent CO2‐selectivity of 99.5 % at 300 °C in supported systems, showing a CO2‐selectivity above 99 % even at 400 °C. Additionally, the partial oxidation of In7Pt3 revealed that too much In2O3 is detrimental for the catalytic properties. The study highlights the crucial role of intermetallic In−Pt compounds in Pt/In2O3 materials with excellent CO2‐selectivity.
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Affiliation(s)
- Nicolas Köwitsch
- Faculty of Natural Sciences, Institute of Chemistry, Materials for Innovative Energy Concepts, Technische Universität Chemnitz, 09107, Chemnitz, Germany
| | - Stefan Barth
- Faculty of Natural Sciences, Institute of Chemistry, Materials for Innovative Energy Concepts, Technische Universität Chemnitz, 09107, Chemnitz, Germany
| | - Kevin Ploner
- Department of Physical Chemistry, University of Innsbruck, 6020, Innsbruck, Austria
| | - Raoul Blume
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195, Berlin, Germany.,Department of Heterogeneous Reactions, Max-Planck-Institute for Chemical Energy Conversion, 45470, Mülheim an der Ruhr, Germany
| | - Detre Teschner
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195, Berlin, Germany.,Department of Heterogeneous Reactions, Max-Planck-Institute for Chemical Energy Conversion, 45470, Mülheim an der Ruhr, Germany
| | - Simon Penner
- Department of Physical Chemistry, University of Innsbruck, 6020, Innsbruck, Austria
| | - Marc Armbrüster
- Faculty of Natural Sciences, Institute of Chemistry, Materials for Innovative Energy Concepts, Technische Universität Chemnitz, 09107, Chemnitz, Germany
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9
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Kojima T, Nakaya Y, Ham H, Kameoka S, Furukawa S. Synthesis of Co 2FeGe Heusler alloy nanoparticles and catalysis for selective hydrogenation of propyne. RSC Adv 2021; 11:18074-18079. [PMID: 35480195 PMCID: PMC9033194 DOI: 10.1039/d1ra02884g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 05/10/2021] [Indexed: 11/21/2022] Open
Abstract
Although intermetallic compounds are attracting attention of catalysis researchers, ternary intermetallic catalysts have scarcely been investigated due the difficulty of synthesizing supported nanoparticles. In this study, we successfully synthesized SiO2 supported Co2FeGe Heuslar alloy nanoparticles. This catalyst exhibited high catalytic performance for selective hydrogenation of propyne by nano-sizing. Supported nanoparticles of Co2FeGe Heusler alloy were successfully synthesized. The reaction rate per weight was increased 2000 times by nano-sizing.![]()
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Affiliation(s)
- Takayuki Kojima
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University Sendai Japan.,Institute of Multidisciplinary Research for Advanced Materials, Tohoku University Sendai Japan
| | - Yuki Nakaya
- Institute for Catalysis, Hokkaido University Sapporo Japan
| | - Hyungwon Ham
- Institute for Catalysis, Hokkaido University Sapporo Japan
| | - Satoshi Kameoka
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University Sendai Japan
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10
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Abe K, Tsukuda R, Fujita N, Kameoka S. High catalytic performance of Al-Pd-(Ru, Fe) icosahedral approximants for acetylene semi-hydrogenation. RSC Adv 2021; 11:15296-15300. [PMID: 35424072 PMCID: PMC8698244 DOI: 10.1039/d1ra01958a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 04/14/2021] [Indexed: 11/21/2022] Open
Abstract
Three cubic crystalline icosahedral approximants (C phase: Al72.0Pd16.4Fe11.6, P40 phase: Al72.0Pd16.4Ru11.6, P20 phase: Al70.0Pd22.3Ru7.7) exhibit high ethylene selectivity of over 90% for hydrogenating acetylene at 150 °C. Moreover, the powdered P20 also demonstrates a high catalytic performance under an industry-like ethylene feed containing 0.5% acetylene as an impurity. Overall, icosahedral approximants in the Al–Pd–(Ru, Fe) systems are promising as a novel class of alloy catalysts. The Al–Pd–(Ru, Fe) icosahedral approximants exhibited high catalytic ethylene selectivity and stability for semi-hydrogenation of acetylene.![]()
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Affiliation(s)
- Keishi Abe
- Department of Materials Processing, Graduate School of Engineering, Tohoku University Sendai 980-8579 Japan.,Institute of Multidisciplinary Research for Advanced Materials, Tohoku University Sendai 980-8577 Japan
| | - Ryota Tsukuda
- Department of Materials Processing, Graduate School of Engineering, Tohoku University Sendai 980-8579 Japan.,Institute of Multidisciplinary Research for Advanced Materials, Tohoku University Sendai 980-8577 Japan
| | - Nobuhisa Fujita
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University Sendai 980-8577 Japan
| | - Satoshi Kameoka
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University Sendai 980-8577 Japan
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11
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Kobayashi Y, Tada S, Kikuchi R. Porous intermetallic Ni 2XAl (X = Ti or Zr) nanoparticles prepared from oxide precursors. NANOSCALE ADVANCES 2021; 3:1901-1905. [PMID: 36133086 PMCID: PMC9417867 DOI: 10.1039/d1na00047k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 02/17/2021] [Indexed: 06/13/2023]
Abstract
Porous intermetallic Ni2XAl (X = Ti or Zr) nanoparticles with small crystallite sizes (24-34 nm) and high Brunauer-Emmett-Teller (BET) surface areas (10-71 m2 g-1) were prepared from oxide precursors by a chemical route. CaH2 acted as a template to form the porous morphologies and assisted the reduction.
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Affiliation(s)
- Yasukazu Kobayashi
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology (AIST) 1-1-1 Higashi Tsukuba Ibaraki 305-8565 Japan
| | - Shohei Tada
- Department of Materials Science and Engineering, Ibaraki University 4-12-1 Nakanarusawacho Hitachi Ibaraki 316-8511 Japan
| | - Ryuji Kikuchi
- Department of Chemical System Engineering, The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan
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12
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Kojima T, Koganezaki T, Fujii S, Kameoka S, Tsai AP. Durability and activity of Co 2YZ (Y = Mn or Fe, Z = Ga or Ge) Heusler alloy catalysts for dehydrogenation of 2-propanol. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00279a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Using dehydrogenation of 2-propanol as a test reaction for Heusler alloy catalysts, durability against oxidation and a relationship between activity and electronic structures were revealed.
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Affiliation(s)
- Takayuki Kojima
- Frontier Research Institute for Interdisciplinary Sciences (FRIS)
- Tohoku University
- Sendai
- Japan
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM)
| | - Takuya Koganezaki
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM)
- Tohoku University
- Sendai
- Japan
| | - Shinpei Fujii
- Graduate School of Science and Engineering
- Kagoshima University
- Kagoshima
- Japan
| | - Satoshi Kameoka
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM)
- Tohoku University
- Sendai
- Japan
| | - An-Pang Tsai
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM)
- Tohoku University
- Sendai
- Japan
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