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Zheng Y, Yang Y, Li Y, Cai L, Zhao X, Xue B, Li Y, An J, Zhang J. Preparation of Hydrophobic Au Catalyst and Application in One-Step Oxidative Esterification of Methacrolein to Methyl Methacrylate. Molecules 2024; 29:1854. [PMID: 38675674 PMCID: PMC11055172 DOI: 10.3390/molecules29081854] [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: 03/21/2024] [Revised: 04/07/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
The water produced during the oxidative esterification reaction occupies the active sites and reduces the activity of the catalyst. In order to reduce the influence of water on the reaction system, a hydrophobic catalyst was prepared for the one-step oxidative esterification of methylacrolein (MAL) and methanol. The catalyst was synthesized by loading the active component Au onto ZnO using the deposition-precipitation method, followed by constructing the silicon shell on Au/ZnO using tetraethoxysilane (TEOS) to introduce hydrophobic groups. Trimethylchlorosilane (TMCS) was used as a hydrophobic modification reagent to prepare hydrophobic catalysts, which exhibited a water droplet contact angle of 111.2°. At a temperature of 80 °C, the hydrophobic catalyst achieved a high MMA selectivity of over 95%. The samples were characterized using XRD, N2 adsorption, ICP, SEM, TEM, UV-vis, FT-IR, XPS, and water droplet contact angle measurements. Kinetic analysis revealed an activation energy of 22.44 kJ/mol for the hydrophobic catalyst.
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Affiliation(s)
- Yanxia Zheng
- Institute of Clean Chemical Technology, School of Chemistry and Chemical Engineering, Shandong Collegial Engineering Research Center of Novel Rare Earth Catalysis Materials, Shandong University of Technology, Zibo 255049, China; (Y.Z.)
| | - Yubo Yang
- Institute of Clean Chemical Technology, School of Chemistry and Chemical Engineering, Shandong Collegial Engineering Research Center of Novel Rare Earth Catalysis Materials, Shandong University of Technology, Zibo 255049, China; (Y.Z.)
| | - Yixuan Li
- School of Mechanical Engineering, Shandong University of Technology, Zibo 255049, China
| | - Lu Cai
- Institute of Clean Chemical Technology, School of Chemistry and Chemical Engineering, Shandong Collegial Engineering Research Center of Novel Rare Earth Catalysis Materials, Shandong University of Technology, Zibo 255049, China; (Y.Z.)
| | - Xuanjiao Zhao
- Institute of Clean Chemical Technology, School of Chemistry and Chemical Engineering, Shandong Collegial Engineering Research Center of Novel Rare Earth Catalysis Materials, Shandong University of Technology, Zibo 255049, China; (Y.Z.)
| | - Bing Xue
- School of Mechanical Engineering, Shandong University of Technology, Zibo 255049, China
| | - Yuchao Li
- Institute of Clean Chemical Technology, School of Chemistry and Chemical Engineering, Shandong Collegial Engineering Research Center of Novel Rare Earth Catalysis Materials, Shandong University of Technology, Zibo 255049, China; (Y.Z.)
| | - Jiutao An
- School of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, China
| | - Jialiang Zhang
- Shandong Mingsheng Environmental Protection Technology Co., Ltd., Jinan 250000, China
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Lim S, Kwon S, Kim N, Na K. A Multifunctional Au/CeO 2-Mg(OH) 2 Catalyst for One-Pot Aerobic Oxidative Esterification of Aldehydes with Alcohols to Alkyl Esters. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1536. [PMID: 34200722 PMCID: PMC8230364 DOI: 10.3390/nano11061536] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/08/2021] [Accepted: 06/09/2021] [Indexed: 11/17/2022]
Abstract
Au nanoparticles bound to crystalline CeO2 nanograins that were dispersed on the nanoplate-like Mg(OH)2, denoted as Au/CeO2-Mg(OH)2, were developed as the highly active and selective multifunctional heterogeneous catalyst for direct oxidative esterification of aldehydes with alcohols to produce alkyl esters under base-free aerobic conditions using oxygen or air as the green oxidants. Au/CeO2-Mg(OH)2 converted 93.3% of methacrylaldehyde (MACR) to methyl methacrylate (MMA, monomer of poly(methyl methacrylate)) with 98.2% selectivity within 1 h, and was repeatedly used over eight recycle runs without regeneration. The catalyst was extensively applied to other aldehydes and alcohols to produce desirable alkyl esters. Comprehensive characterization analyses revealed that the strong metal-support interaction (SMSI) among the three catalytic components (Au, CeO2, and Mg(OH)2), and the proximity and strong contact between Au/CeO2 and the Mg(OH)2 surface were prominent factors that accelerated the reaction toward a desirable oxidative esterification pathway. During the reaction, MACR was adsorbed on the surface of CeO2-Mg(OH)2, upon which methanol was simultaneously activated for esterifying the adsorbed MACR. Hemiacetal-form intermediate species were subsequently produced and oxidized to MMA on the surface of the electron-rich Au nanoparticles bound to partially reduced CeO2-x with electron-donating properties. The present study provides new insights into the design of SMSI-induced supported-metal-nanoparticles for the development of novel, multifunctional, and heterogeneous catalysts.
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Affiliation(s)
| | | | | | - Kyungsu Na
- Department of Chemistry, Chonnam National University, Gwangju 61186, Korea; (S.L.); (S.K.); (N.K.)
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Qi M, Wu X, Wang L, Song Y, Diao Y. The effect of the bimetallic Pd-Pb structures on direct oxidative esterification of methacrolein with methanol. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Efficient Synthesis of Methyl Methacrylate by One Step Oxidative Esterification over Zn-Al-Mixed Oxides Supported Gold Nanocatalysts. Catalysts 2021. [DOI: 10.3390/catal11020162] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Methyl methacrylate (MMA) is an important monomer in fine chemicals. The synthesis of MMA by one-step oxidative esterification from methacrolein with methanol over a heterogeneous catalyst with high activity, selectivity and stability is highly desirable. Herein, Zn-Al-hydrotalcites (HTs)-supported atomically precise Au25 nanoclusters with different molar ratios of Zn2+/Al3+ were prepared and used as the precursors for this reaction. They exhibited good performances in comparison with the gold catalysts prepared by the deposition precipitation method. The structural and electronic properties were evaluated by various characterization technologies, including X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), in situ diffuse reflectance infrared Fourier-transform spectroscopy (DRIFTS) of CO adsorption, X-ray photoelectron spectroscopy (XPS), and CO2 temperature-programmed desorption (TPD). The combined characterization results suggested that the adsorption property of gold and the basicity of the catalyst contributes to their high activities. Substrates extended experiments and stability tests implied the potential application of Zn-Al-mixed oxides supported gold catalysts, which paves a new way for supported gold catalyst in the one-step oxidation esterification reaction.
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Wang G, Cai G. Synergistic Effects between Acid and Base Sites and Kinetic for Synthesis of Methylacrolein on the Cs-P/γ-Al 2O 3 Catalyst. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c03337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gang Wang
- Department of Chemical Engineering & Applied Chemistry, University of Toronto, Toronto M5S3E5, Canada
| | - Guangming Cai
- Department of Chemical Engineering & Applied Chemistry, University of Toronto, Toronto M5S3E5, Canada
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Guan Y, Ma H, Chen W, Li M, Qian G, Chen D, Zhou X, Duan X. Methyl Methacrylate Synthesis: Thermodynamic Analysis for Oxidative Esterification of Methacrolein and Aldol Condensation of Methyl Acetate. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02017] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yanan Guan
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Hongqin Ma
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Wenyao Chen
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Maoshuai Li
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering & Technology, Tianjin University, Tianjin 300350, China
| | - Gang Qian
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - De Chen
- Department of Chemical Engineering, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
| | - Xinggui Zhou
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xuezhi Duan
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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Effect of the loading sequence of CeO2 and Pd over Al2O3 on the catalytic performance of Pd-only close-coupled catalysts. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2017.10.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Li Y, Tian Y, Zheng Y, Ge T, Fu Z, Jiao T, Wang M, Huang H, Zuo C. Direct oxidation esterification of methacrolein with methanol: Oxygen vacancy promotion of Zr‐doped Au/CeO
2
nanorods. CAN J CHEM ENG 2019. [DOI: 10.1002/cjce.23659] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yuchao Li
- School of Chemistry and Chemical EngineeringClean Chemical Engineering Technology R&D Institute, Shandong University of Technology Zibo P. R. China
| | - Yun Tian
- School of Chemistry and Chemical EngineeringClean Chemical Engineering Technology R&D Institute, Shandong University of Technology Zibo P. R. China
| | - Yanxia Zheng
- School of Chemistry and Chemical EngineeringClean Chemical Engineering Technology R&D Institute, Shandong University of Technology Zibo P. R. China
| | - Tingting Ge
- School of Chemistry and Chemical EngineeringClean Chemical Engineering Technology R&D Institute, Shandong University of Technology Zibo P. R. China
| | - Zhongjun Fu
- School of Chemistry and Chemical EngineeringClean Chemical Engineering Technology R&D Institute, Shandong University of Technology Zibo P. R. China
| | - Tiantian Jiao
- College of Chemical & Environmental EngineeringShandong University of Science and Technology Qingdao P. R. China
| | - Ming Wang
- School of Chemistry and Chemical EngineeringClean Chemical Engineering Technology R&D Institute, Shandong University of Technology Zibo P. R. China
| | - Haofei Huang
- School of Chemistry and Chemical EngineeringClean Chemical Engineering Technology R&D Institute, Shandong University of Technology Zibo P. R. China
| | - Cuncun Zuo
- School of Chemistry and Chemical EngineeringClean Chemical Engineering Technology R&D Institute, Shandong University of Technology Zibo P. R. China
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Design and Optimization of a Process for the Production of Methyl Methacrylate via Direct Methylation. Processes (Basel) 2019. [DOI: 10.3390/pr7060377] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Methyl methacrylate (MMA) plays a vital role in national productions with broad application. Herein, the production of MMA is realized by the improved eco-friendly direct methylation method using Aspen Plus software. Three novel kinds of energy-saving measures were proposed in this study, including the recycle streams of an aqueous solution, methacrolein (MAL), and methanol, the deployment of double-effect distillation instead of a normal one, and the design of a promising heat-exchange network. Moreover, MMA with a purity of 99.9% is obtained via the design of a MAL absorber column with an optimal stage number of 11 and a facile chloroform recovery process by using the RadFrac model. Thus, the proposed green process with energy-conservation superiority is the vital clue for developing MMA, and provides a reference for the production of MMA-ramifications with excellent prospects.
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One step oxidative esterification of methacrolein with methanol over Au-CeO2/γ-Al2O3 catalysts. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2019.03.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Darabi Mahboub MJ, Dubois JL, Cavani F, Rostamizadeh M, Patience GS. Catalysis for the synthesis of methacrylic acid and methyl methacrylate. Chem Soc Rev 2018; 47:7703-7738. [PMID: 30211916 DOI: 10.1039/c8cs00117k] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Methyl methacrylate (MMA) is a specialty monomer for poly methyl methacrylate (PMMA) and the increasing demand for this monomer has motivated industry to develop clean technologies based on renewable resources. The dominant commercial process reacts acetone and hydrogen cyanide to MMA (ACH route) but the intermediates (hydrogen cyanide, and acetone cyanohydrin) are toxic and represent an environmental hazard. Esterification of methacrylic acid (MAA) to MMA is a compelling alternative together with ethylene, propylene, and isobutene/t-butanol as feedstocks. Partially oxidizing isobutane or 2-methyl-1,3-propanediol (2MPDO) over heteropolycompounds to MAA in a single-step is nascent technology to replace current processes. The focus of this review is on catalysts and their role in the development of processes herein described. Indeed, in some cases remarkable catalysts were studied that enabled considerable steps forward in both the advancement of catalysis science and establishing the basis for new technologies. An emblematic example is represented by Keggin-type heteropolycompounds with cesium and vanadium, which are promising catalysts to convert isobutane and 2MPDO to MAA. Renewable sources for the MMA or MAA route include acetone, isobutanol, ethanol, lactic, itaconic, and citric acids. End-of-life PMMA is expected to grow as a future source of MMA.
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Ma J, Yang X, Nie Y, Wang B. The influence of a hydrophobic carrier, reactant and product during H 2O adsorption on Pd surface for the oxidative esterification of methacrolein to methyl methacrylate. Phys Chem Chem Phys 2018; 20:9965-9974. [PMID: 29619457 DOI: 10.1039/c8cp00609a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Taking the one-step oxidative esterification of methacrolein (MAL) to methyl methacrylate (MMA) as a model reaction and because H2O that was generated easily formed a film of water on the catalyst surface, which restricted the diffusion of the reactants to the active sites, the effects of the hydrophobic carrier styrene-divinylbenzene (SDB) copolymer, the reactant CH3OH and the product MMA during the adsorption of H2O on a Pd surface were investigated. For a Pd/SDB catalyst, the interactions between the active component and the carrier were first calculated using Pd4 clusters. The results implied that Pd4 clusters were chemisorbed on the SDB carrier. By comparing the adsorption energy of H2O molecules on Pd4 clusters with or without SDB, it was found that the adsorption energy of the former was reduced by about 50%, indicating that the hydrophobic carrier SDB reduced the adsorption of H2O on Pd4 clusters. This was also confirmed by the results for the partial density of states, differences in charge density and comparative Mulliken charge analysis. The influences of the reactant CH3OH and the product MMA on the adsorption of H2O were investigated using the Pd(111) surface. The results of co-adsorption simulations showed that some of the electrons on CH3OH molecules were transferred to H2O molecules that strengthened the electronic interaction between H2O molecules and the Pd surface and led to a change in the adsorption of isolated H2O molecules from physisorption to chemisorption. However, the product MMA when chemisorbed on the Pd surface had little effect on the adsorption of H2O molecules on the Pd(111) surface.
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Affiliation(s)
- Jing Ma
- Key Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China.
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