1
|
Ye E, Lin F, Fu C, Zhou X, Lin Q, Pan H, Chen Z. Enhancing Pd Catalytic Activity by Amine Group Modification for Efficient Direct Synthesis of H 2O 2. ACS APPLIED MATERIALS & INTERFACES 2024; 16:27490-27503. [PMID: 38751374 DOI: 10.1021/acsami.4c05221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
A great deal of research has been carried out on the design of Pd-based catalysts in the direct synthesis of H2O2, mainly for the purpose of improving the H2O2 selectivity by weakening the activation energy on the Pd active site and thus inhibiting the dissociation of the O-O bonds in O2*, OOH*, and HOOH*. However, this often results in insufficient activation energy for the reaction between H2 and O2 on Pd, leading to difficulties in improving both the selectivity and productivity of H2O2 simultaneously. Based on this, this study reports an efficient catalyst composed of amine-functionalized SBA-15-supported Pd. The strong metal-support interaction not only makes the PdNPs highly dispersed with more Pd active sites but also improves the stability of the catalyst. The amine group modification increases the proportion of Pd0, further enhancing Pd activity and promoting the adsorption and conversion of H2 and O2 on Pd, thereby significantly increasing H2O2 productivity. Additionally, the density-functional theory simulation results showed that due to the hydrogen-bonding force between the amine group and H2O2, this particular anchoring effect would make the hydrogenation and decomposition of H2O2 effectively suppressed. Ultimately, both the selectivity and productivity of H2O2 are improved simultaneously.
Collapse
Affiliation(s)
- Entong Ye
- School of Chemistry and Chemical Engineering, Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University, Guiyang, Guizhou 550025, China
| | - Fangmei Lin
- School of Foreign Languages & Literature, Yunnan Normal University, Kunming, Yunnan 650500, China
| | - Chengbin Fu
- School of Chemistry and Chemical Engineering, Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University, Guiyang, Guizhou 550025, China
| | - Xin Zhou
- School of Chemistry and Chemical Engineering, Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University, Guiyang, Guizhou 550025, China
| | - Qian Lin
- School of Chemistry and Chemical Engineering, Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University, Guiyang, Guizhou 550025, China
| | - Hongyan Pan
- School of Chemistry and Chemical Engineering, Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University, Guiyang, Guizhou 550025, China
| | - Zheng Chen
- School of Chemistry and Chemical Engineering, Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University, Guiyang, Guizhou 550025, China
| |
Collapse
|
2
|
Lewis RJ, Hutchings GJ. Selective Oxidation Using In Situ-Generated Hydrogen Peroxide. Acc Chem Res 2024; 57:106-119. [PMID: 38116936 PMCID: PMC10765371 DOI: 10.1021/acs.accounts.3c00581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 12/04/2023] [Accepted: 12/04/2023] [Indexed: 12/21/2023]
Abstract
ConspectusHydrogen peroxide (H2O2) for industrial applications is manufactured through an indirect process that relies on the sequential reduction and reoxidation of quinone carriers. While highly effective, production is typically centralized and entails numerous energy-intensive concentration steps. Furthermore, the overhydrogenation of the quinone necessitates periodic replacement, leading to incomplete atom efficiency. These factors, in addition to the presence of propriety stabilizing agents and concerns associated with their separation from product streams, have driven interest in alternative technologies for chemical upgrading. The decoupling of oxidative transformations from commercially synthesized H2O2 may offer significant economic savings and a reduction in greenhouse gas emissions for several industrially relevant processes. Indeed, the production and utilization of the oxidant in situ, from the elements, would represent a positive step toward a more sustainable chemical synthesis sector, offering the potential for total atom efficiency, while avoiding the drawbacks associated with current industrial routes, which are inherently linked to commercial H2O2 production. Such interest is perhaps now more pertinent than ever given the rapidly improving viability of green hydrogen production.The application of in situ-generated H2O2 has been a long-standing goal in feedstock valorization, with perhaps the most significant interest placed on propylene epoxidation. Until very recently a viable in situ alternative to current industrial oxidative processes has been lacking, with prior approaches typically hindered by low rates of conversion or poor selectivity toward desired products, often resulting from competitive hydrogenation reactions. Based on over 20 years of research, which has led to the development of catalysts for the direct synthesis of H2O2 that offer high synthesis rates and >99% H2 utilization, we have recently turned our attention to a range of oxidative transformations where H2O2 is generated and utilized in situ. Indeed, we have recently demonstrated that it is possible to rival state-of-the-art industrial processes through in situ H2O2 synthesis, establishing the potential for significant process intensification and considerable decarbonization of the chemical synthesis sector.We have further established the potential of an in situ route to both bulk and fine chemical synthesis through a chemo-catalytic/enzymatic one-pot approach, where H2O2 is synthesized over heterogeneous surfaces and subsequently utilized by a class of unspecific peroxygenase enzymes for C-H bond functionalization. Strikingly, through careful control of the chemo-catalyst, it is possible to ensure that competitive, nonenzymatic pathways are inhibited while also avoiding the regiospecific and selectivity concerns associated with current energy-intensive industrial processes, with further cost savings associated with the operation of the chemo-enzymatic approach at near-ambient temperatures and pressures. Beyond traditional applications of chemo-catalysis, the efficacy of in situ-generated H2O2 (and associated oxygen-based radical species) for the remediation of environmental pollutants has also been a major interest of our laboratory, with such technology offering considerable improvements over conventional disinfection processes.We hope that this Account, which highlights the key contributions of our laboratory to the field over recent years, demonstrates the chemistries that may be unlocked and improved upon via in situ H2O2 synthesis and it inspires broader interest from the scientific community.
Collapse
Affiliation(s)
- Richard J. Lewis
- Max Planck−Cardiff Centre on
the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis
Institute, School of Chemistry, Cardiff
University, Cardiff, CF24 4HQ, United Kingdom
| | - Graham J. Hutchings
- Max Planck−Cardiff Centre on
the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis
Institute, School of Chemistry, Cardiff
University, Cardiff, CF24 4HQ, United Kingdom
| |
Collapse
|
3
|
Lewis RJ, Ueura K, Liu X, Fukuta Y, Qin T, Davies TE, Morgan DJ, Stenner A, Singleton J, Edwards JK, Freakley SJ, Kiely CJ, Chen L, Yamamoto Y, Hutchings GJ. Selective Ammoximation of Ketones via In Situ H 2O 2 Synthesis. ACS Catal 2023. [DOI: 10.1021/acscatal.2c05799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Richard J. Lewis
- Max Planck−Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, CardiffCF10 3AT, U.K
| | - Kenji Ueura
- UBE Corporation, 1978-5, Kogushi, Ube, Yamaguchi755-8633, Japan
| | - Xi Liu
- School of Chemistry and Chemical, In-situ Centre for Physical Sciences, Shanghai Jiao Tong University, 200240Shanghai, P. R. China
| | - Yukimasa Fukuta
- UBE Corporation, 1978-5, Kogushi, Ube, Yamaguchi755-8633, Japan
| | - Tian Qin
- School of Chemistry and Chemical, In-situ Centre for Physical Sciences, Shanghai Jiao Tong University, 200240Shanghai, P. R. China
| | - Thomas E. Davies
- Max Planck−Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, CardiffCF10 3AT, U.K
| | - David J. Morgan
- Max Planck−Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, CardiffCF10 3AT, U.K
- HarwellXPS, Research Complex at Harwell (RCaH), DidcotOX11 0FA, U.K
| | - Alex Stenner
- Max Planck−Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, CardiffCF10 3AT, U.K
| | - James Singleton
- Max Planck−Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, CardiffCF10 3AT, U.K
| | - Jennifer K. Edwards
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, CardiffCF10 3AT, U.K
| | - Simon J. Freakley
- Department of Chemistry, University of Bath, Claverton Down, BathBA2 7AY, U.K
| | - Christopher J. Kiely
- Department of Materials Science and Engineering, Lehigh University, Bethlehem, Pennsylvania18015, United States
| | - Liwei Chen
- School of Chemistry and Chemical, In-situ Centre for Physical Sciences, Shanghai Jiao Tong University, 200240Shanghai, P. R. China
- School of Chemistry and Chemical, Frontiers Science Centre for Transformative Molecules, Shanghai200240, P.R. China
| | | | - Graham J. Hutchings
- Max Planck−Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, CardiffCF10 3AT, U.K
| |
Collapse
|
4
|
Improving Catalytic Activity towards the Direct Synthesis of H2O2 through Cu Incorporation into AuPd Catalysts. Catalysts 2022. [DOI: 10.3390/catal12111396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
With a focus on catalysts prepared by an excess-chloride wet impregnation procedure and supported on the zeolite ZSM-5(30), the introduction of low concentrations of tertiary base metals, in particular Cu, into supported AuPd nanoparticles can be observed to enhance catalytic activity towards the direct synthesis of H2O2. Indeed the optimal catalyst formulation (1%AuPd(0.975)Cu(0.025)/ZSM-5) is able to achieve rates of H2O2 synthesis (115 molH2O2kgcat−1h−1) approximately 1.7 times that of the bi-metallic analogue (69 molH2O2kgcat−1h−1) and rival that previously reported over comparable materials which use Pt as a dopant. Notably, the introduction of Cu at higher loadings results in an inhibition of performance. Detailed analysis by CO-DRFITS and XPS reveals that the improved performance observed over the optimal catalyst can be attributed to the electronic modification of the Pd species and the formation of domains of a mixed Pd2+/Pd0 oxidation state as well as structural changed within the nanoalloy.
Collapse
|
5
|
Brehm J, Lewis RJ, Richards T, Qin T, Morgan DJ, Davies TE, Chen L, Liu X, Hutchings GJ. Enhancing the Chemo-Enzymatic One-Pot Oxidation of Cyclohexane via In Situ H 2O 2 Production over Supported Pd-Based Catalysts. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Joseph Brehm
- Max Planck−Cardiff Centre on the Fundamentals of Heterogeneous Catalysis (FUNCAT), Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Richard J. Lewis
- Max Planck−Cardiff Centre on the Fundamentals of Heterogeneous Catalysis (FUNCAT), Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Thomas Richards
- Max Planck−Cardiff Centre on the Fundamentals of Heterogeneous Catalysis (FUNCAT), Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Tian Qin
- In-situ Centre for Physical Sciences, School of Chemistry and Chemical, Frontiers Science Centre for Transformative Molecules, Shanghai 200240, P. R. China
| | - David J. Morgan
- Max Planck−Cardiff Centre on the Fundamentals of Heterogeneous Catalysis (FUNCAT), Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
- HarwellXPS, Research Complex at Harwell (RCaH), Didcot OX11 OFA, United Kingdom
| | - Thomas E. Davies
- Max Planck−Cardiff Centre on the Fundamentals of Heterogeneous Catalysis (FUNCAT), Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Liwei Chen
- In-situ Centre for Physical Sciences, School of Chemistry and Chemical, Frontiers Science Centre for Transformative Molecules, Shanghai 200240, P. R. China
- School of Chemistry and Chemical, Frontiers Science Centre for Transformative Molecules, Shanghai 200240, P. R. China
| | - Xi Liu
- In-situ Centre for Physical Sciences, School of Chemistry and Chemical, Frontiers Science Centre for Transformative Molecules, Shanghai 200240, P. R. China
| | - Graham J. Hutchings
- Max Planck−Cardiff Centre on the Fundamentals of Heterogeneous Catalysis (FUNCAT), Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| |
Collapse
|
6
|
Lewis RJ, Koy M, Macino M, Das M, Carter JH, Morgan DJ, Davies TE, Ernst JB, Freakley SJ, Glorius F, Hutchings GJ. N-Heterocyclic Carbene Modified Palladium Catalysts for the Direct Synthesis of Hydrogen Peroxide. J Am Chem Soc 2022; 144:15431-15436. [PMID: 35976628 PMCID: PMC9449981 DOI: 10.1021/jacs.2c04828] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
![]()
Heterogeneous palladium catalysts modified by N-heterocyclic
carbenes
(NHCs) are shown to be highly effective toward the direct synthesis
of hydrogen peroxide (H2O2), in the absence
of the promoters which are typically required to enhance both activity
and selectivity. Catalytic evaluation in a batch regime demonstrated
that through careful selection of the N-substituent of the NHC it
is possible to greatly enhance catalytic performance when compared
to the unmodified analogue and reach concentrations of H2O2 rivaling that obtained by state-of-the-art catalysts.
The enhanced performance of the modified catalyst, which is retained
upon reuse, is attributed to the ability of the NHC to electronically
modify Pd speciation.
Collapse
Affiliation(s)
- Richard J Lewis
- Max Planck Cardiff Centre on the Fundamentals of Heterogeneous Catalysis, FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF103AT, United Kingdom
| | - Maximilian Koy
- Westfälische Wilhelms-Universität Münster, Organisch-Chemisches Institut, Corrensstraße 36, 48149 Münster, Germany
| | - Margherita Macino
- Max Planck Cardiff Centre on the Fundamentals of Heterogeneous Catalysis, FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF103AT, United Kingdom
| | - Mowpriya Das
- Westfälische Wilhelms-Universität Münster, Organisch-Chemisches Institut, Corrensstraße 36, 48149 Münster, Germany
| | - James H Carter
- Max Planck Cardiff Centre on the Fundamentals of Heterogeneous Catalysis, FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF103AT, United Kingdom
| | - David J Morgan
- Max Planck Cardiff Centre on the Fundamentals of Heterogeneous Catalysis, FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF103AT, United Kingdom.,Harwell XPS, Research Complex at Harwell (RCaH), Didcot OX110FA, United Kingdom
| | - Thomas E Davies
- Max Planck Cardiff Centre on the Fundamentals of Heterogeneous Catalysis, FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF103AT, United Kingdom
| | - Johannes B Ernst
- Westfälische Wilhelms-Universität Münster, Organisch-Chemisches Institut, Corrensstraße 36, 48149 Münster, Germany
| | - Simon J Freakley
- Department of Chemistry, University of Bath, Claverton Down, Bath BA27AY, United Kingdom
| | - Frank Glorius
- Westfälische Wilhelms-Universität Münster, Organisch-Chemisches Institut, Corrensstraße 36, 48149 Münster, Germany
| | - Graham J Hutchings
- Max Planck Cardiff Centre on the Fundamentals of Heterogeneous Catalysis, FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF103AT, United Kingdom
| |
Collapse
|
7
|
Fu L, Liu S, Deng Y, He H, Yuan S, Ouyang L. Fabrication of the PdAu Surface Alloy on an Ordered Intermetallic Au 3Cu Core for Direct H 2O 2 Synthesis at Ambient Pressure. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lian Fu
- Low-carbon Technology & Chemical Reaction Engineering Lab, College of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Shijie Liu
- Low-carbon Technology & Chemical Reaction Engineering Lab, College of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Yanbo Deng
- Low-carbon Technology & Chemical Reaction Engineering Lab, College of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Huaqiang He
- Low-carbon Technology & Chemical Reaction Engineering Lab, College of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Shaojun Yuan
- Low-carbon Technology & Chemical Reaction Engineering Lab, College of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Like Ouyang
- Low-carbon Technology & Chemical Reaction Engineering Lab, College of Chemical Engineering, Sichuan University, Chengdu 610065, China
| |
Collapse
|
8
|
Bai P, Zhou T, Wang X, Liu X, Wang Y, Wang Y, Muhumuza E, Zhang Y, Wu P. Remarkably improved performance of Au-Pd/γ-Al2O3 catalyst in benzyl alcohol oxidation by mercapto-propyl-trimethoxysilane modification. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.05.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
9
|
Richards T, Lewis RJ, Morgan DJ, Hutchings GJ. The Direct Synthesis of Hydrogen Peroxide Over Supported Pd-Based Catalysts: An Investigation into the Role of the Support and Secondary Metal Modifiers. Catal Letters 2022. [DOI: 10.1007/s10562-022-03967-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AbstractThe direct synthesis of H2O2 from molecular H2 and O2 over Pd-based catalysts, prepared via an industrially relevant, excess chloride co-impregnation procedure is investigated. Initial studies into the well-established PdAu system demonstrated the key role of Pd: Au ratio on catalytic activity, under conditions that have previously been found to be optimal for H2O2 formation. Further investigations using the optimal Pd: Au ratio identified the role of the catalyst support in controlling particle size and Pd oxidation state and thus catalytic performance. Subsequently, with an aim to replace Au with cheaper alternatives, the alloying of Pd with more abundant secondary metals is explored.
Graphical Abstract
Collapse
|
10
|
Zhang M, Xu H, Luo Y, Zhu J, Cheng D. Enhancing the catalytic performance of PdAu catalysts by W-induced strong interaction for the direct synthesis of H 2O 2. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00112h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
W-Induced strong interaction with PdAu is the key to the enhanced catalytic performance for the direct synthesis of H2O2, with WO3 species partially encapsulating the PdAu particles.
Collapse
Affiliation(s)
- Meijia Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Haoxiang Xu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Yibin Luo
- State Key Laboratory of Catalytic Materials and Reaction Engineering, RIPP, SINOPEC, Beijing 100083, People's Republic of China
| | - Jiqin Zhu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Daojian Cheng
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| |
Collapse
|
11
|
Barnes A, Lewis R, Morgan DJ, Davies T, Hutchings G. Enhancing catalytic performance of AuPd catalysts towards the direct synthesis of H2O2 through incorporation of base metals. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01962g] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The introduction of small quantities of tertiary base metals into supported AuPd nanoparticles is found to result in improved catalytic performance towards the direct synthesis of H2O2 compared to the...
Collapse
|
12
|
Lewis RJ, Ntainjua EN, Morgan DJ, Davies TE, Carley AF, Freakley SJ, Hutchings GJ. Improving the performance of Pd based catalysts for the direct synthesis of hydrogen peroxide via acid incorporation during catalyst synthesis. CATAL COMMUN 2021. [DOI: 10.1016/j.catcom.2021.106358] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
13
|
Ricciardulli T, Adams JS, DeRidder M, van Bavel AP, Karim AM, Flaherty DW. H2O-assisted O2 reduction by H2 on Pt and PtAu bimetallic nanoparticles: Influences of composition and reactant coverages on kinetic regimes, rates, and selectivities. J Catal 2021. [DOI: 10.1016/j.jcat.2021.10.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
14
|
Richards T, Harrhy JH, Lewis RJ, Howe AGR, Suldecki GM, Folli A, Morgan DJ, Davies TE, Loveridge EJ, Crole DA, Edwards JK, Gaskin P, Kiely CJ, He Q, Murphy DM, Maillard JY, Freakley SJ, Hutchings GJ. A residue-free approach to water disinfection using catalytic in situ generation of reactive oxygen species. Nat Catal 2021. [DOI: 10.1038/s41929-021-00642-w] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
15
|
Brehm J, Lewis RJ, Morgan DJ, Davies TE, Hutchings GJ. The Direct Synthesis of Hydrogen Peroxide over AuPd Nanoparticles: An Investigation into Metal Loading. Catal Letters 2021. [DOI: 10.1007/s10562-021-03632-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AbstractThe direct synthesis of H2O2 from molecular H2 and O2 over AuPd catalysts, supported on TiO2 and prepared via an excess chloride co-impregnation procedure is investigated. The role of Au:Pd ratio on the catalytic activity towards H2O2 formation and its subsequent degradation is evaluated under conditions that have previously been found to be optimal for the formation of H2O2. The combination of relatively small nanoparticles, of mixed Pd-oxidation state is shown to correlate with enhanced catalytic performance. Subsequently, a detailed study of catalytic activity towards H2O2 synthesis as a function of AuPd loading was conducted, with a direct correlation between catalytic activity and metal loading observed.
Graphic Abstract
Collapse
|
16
|
Crombie CM, Lewis RJ, Taylor RL, Morgan DJ, Davies TE, Folli A, Murphy DM, Edwards JK, Qi J, Jiang H, Kiely CJ, Liu X, Skjøth-Rasmussen MS, Hutchings GJ. Enhanced Selective Oxidation of Benzyl Alcohol via In Situ H 2O 2 Production over Supported Pd-Based Catalysts. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04586] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Caitlin M. Crombie
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Richard J. Lewis
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Rebekah L. Taylor
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - David J. Morgan
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
- HarwellXPS, Research Complex at Harwell (RCaH), Didcot OX11 OFA, United Kingdom
| | - Thomas E. Davies
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Andrea Folli
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Damien M. Murphy
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Jennifer K. Edwards
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Jizhen Qi
- i-Lab, CAS center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 215123 Suzhou, People’s Republic of China
| | - Haoyu Jiang
- In-situ Center for Physical Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 200240, 800 Dongchuan
Road. Minhang District, Shanghai, People’s Republic of China
| | - Christopher J. Kiely
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
- Department of Materials Science and Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Xi Liu
- In-situ Center for Physical Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 200240, 800 Dongchuan
Road. Minhang District, Shanghai, People’s Republic of China
| | | | - Graham J. Hutchings
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| |
Collapse
|
17
|
The Selective Oxidation of Cyclohexane via In-situ H2O2 Production Over Supported Pd-based Catalysts. Catal Letters 2021. [DOI: 10.1007/s10562-020-03511-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
AbstractThe oxidation of cyclohexane via the in-situ production of H2O2 from molecular H2 and O2 offers an attractive route to the current industrial means of producing cyclohexanone and cyclohexanol (KA oil), key materials in the production of Nylon. The in-situ route has the potential to overcome the significant economic and environmental concerns associated with the use of commercial H2O2, while also allowing for the use of far lower reaction temperatures than those typical of the purely aerobic route to KA oil. Herein we demonstrate the efficacy of a series of bi-functional Pd-based catalysts, which offer appreciable concentrations of KA oil, under conditions where limited activity is observed using O2 alone. In particular the introduction of V into a supported Pd catalyst is seen to improve KA oil concentration by an order of magnitude, compared to the Pd-only analogue. In particular we ascribe this improvement in catalytic performance to the development of Pd domains of mixed oxidation state upon V incorporation as evidenced through X-ray photoelectron spectroscopy.
Graphic Abstract
Collapse
|
18
|
Santos A, Lewis RJ, Morgan DJ, Davies TE, Hampton E, Gaskin P, Hutchings GJ. The degradation of phenol via in situ H 2O 2 production over supported Pd-based catalysts. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01897c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The oxidative degradation of phenol via in situ H2O2 production offers an attractive route to the destruction of organic contaminants in water streams, overcoming the significant concerns associated with traditional water remediation technologies.
Collapse
Affiliation(s)
- Alba Santos
- Max Planck Centre for Fundamental Heterogeneous Catalysis (FUNCAT), Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | - Richard J. Lewis
- Max Planck Centre for Fundamental Heterogeneous Catalysis (FUNCAT), Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | - David J. Morgan
- Max Planck Centre for Fundamental Heterogeneous Catalysis (FUNCAT), Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
- HarwellXPS, Research Complex at Harwell (RCaH), Didcot, OX11 OFA, UK
| | - Thomas E. Davies
- Max Planck Centre for Fundamental Heterogeneous Catalysis (FUNCAT), Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | - Euan Hampton
- Dŵr Cymru Welsh Water, Pentwyn Road, Nelson, Treharris, CF46 6LY, UK
| | - Paul Gaskin
- Dŵr Cymru Welsh Water, Pentwyn Road, Nelson, Treharris, CF46 6LY, UK
| | - Graham J. Hutchings
- Max Planck Centre for Fundamental Heterogeneous Catalysis (FUNCAT), Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| |
Collapse
|
19
|
Akram A, Shaw G, Lewis RJ, Piccinini M, Morgan DJ, Davies TE, Freakley SJ, Edwards JK, Moulijn JA, Hutchings GJ. The direct synthesis of hydrogen peroxide using a combination of a hydrophobic solvent and water. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01163k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The use of a hydrophobic solvent in combination with water leads to significant suppression of H2O2 degradation pathways over a AuPd/C catalyst.
Collapse
Affiliation(s)
- Adeeba Akram
- Cardiff Catalysis Institute
- School of Chemistry
- Cardiff University
- Cardiff
- UK
| | - Greg Shaw
- Cardiff Catalysis Institute
- School of Chemistry
- Cardiff University
- Cardiff
- UK
| | - Richard J. Lewis
- Cardiff Catalysis Institute
- School of Chemistry
- Cardiff University
- Cardiff
- UK
| | - Marco Piccinini
- Cardiff Catalysis Institute
- School of Chemistry
- Cardiff University
- Cardiff
- UK
| | - David J. Morgan
- Cardiff Catalysis Institute
- School of Chemistry
- Cardiff University
- Cardiff
- UK
| | - Thomas E. Davies
- Cardiff Catalysis Institute
- School of Chemistry
- Cardiff University
- Cardiff
- UK
| | | | | | - Jacob A. Moulijn
- Cardiff Catalysis Institute
- School of Chemistry
- Cardiff University
- Cardiff
- UK
| | | |
Collapse
|