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Liu G, Chen Y, Chen Y, Shi Y, Zhang M, Shen G, Qi P, Li J, Ma D, Yu F, Huang X. Indirect Electrocatalysis S─N/S─S Bond Construction by Robust Polyoxometalate Based Foams. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2304716. [PMID: 37392073 DOI: 10.1002/adma.202304716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/23/2023] [Accepted: 06/29/2023] [Indexed: 07/02/2023]
Abstract
Indirect electrocatalytic conversion of cheap organic raw materials via the activation of S─H and N─H bonds into the value-added S─N/S─S bonds chemicals for industrial rubber production is a promising strategy to realize the atomic economic reaction, during which the kinetic inhibition that is associated with the electron transfer at the electrode/electrolyte interface in traditional direct electrocatalysis can be eliminated to achieve higher performance. In this work, a series of di-copper-substituted phosphotungstatebased foams (PW10 Cu2 @CMC) are fabricated with tunable loadings (17 to 44 wt%), which can be successfully applied in indirect electrocatalytic syntheses of sulfenamides and disulfides. Specifically, the optimal PW10 Cu2 @CMC (44 wt%) exhibits excellent electrocatalytic performance for the construction of S─N/S─S bonds (yields up to 99%) coupling with the efficient production of H2 (≈50 µmol g-1 h-1 ). Remarkably, it enables the scale-up production (≈14.4 g in a batch experiment) and the obtained products can serve as rubber vulcanization accelerators with superior properties to traditional industrial rubber additives in real industrial processes. This powerful catalysis system that can simultaneously produce rubber vulcanization accelerator and H2 may inaugurate a new electrocatalytic avenue to explore polyoxometalate-based foam catalysts in electrocatalysis field.
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Affiliation(s)
- Gang Liu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry & Chemical Engineering, Liaocheng University, Liaocheng, Shandong, 252059, P. R. China
| | - Yifa Chen
- National and Local Joint Engineering Research Center of MPTES in High Energy and Safety LIBs, Engineering Research Center of MTEES (Ministry of Education), Key Lab. of ETESPG(GHEI), School of Chemistry, South China Normal University, Guangzhou, 510006, P. R. China
| | - Yulu Chen
- National and Local Joint Engineering Research Center of MPTES in High Energy and Safety LIBs, Engineering Research Center of MTEES (Ministry of Education), Key Lab. of ETESPG(GHEI), School of Chemistry, South China Normal University, Guangzhou, 510006, P. R. China
| | - Yanqi Shi
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry & Chemical Engineering, Liaocheng University, Liaocheng, Shandong, 252059, P. R. China
| | - Meiyu Zhang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry & Chemical Engineering, Liaocheng University, Liaocheng, Shandong, 252059, P. R. China
| | - Guodong Shen
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry & Chemical Engineering, Liaocheng University, Liaocheng, Shandong, 252059, P. R. China
| | - Pengfei Qi
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry & Chemical Engineering, Liaocheng University, Liaocheng, Shandong, 252059, P. R. China
| | - Jikun Li
- College of Chemistry and Chemical Engineering, Taishan University, Tai'an, Shandong, 271021, P. R. China
| | - Delong Ma
- National Rubber Additive Engineering Technology Center, Liaocheng, Shandong, 252059, P. R. China
| | - Fei Yu
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, P. R. China
| | - Xianqiang Huang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry & Chemical Engineering, Liaocheng University, Liaocheng, Shandong, 252059, P. R. China
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Xiao Q, Jiang Y, Yuan W, Chen J, Li H, Zheng H. Styrene epoxidation catalyzed by polyoxometalate/quaternary ammonium phase transfer catalysts: the effect of cation size and catalyst deactivation mechanism. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2022.04.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Shi Y, Zhou T, Di JQ, Wang W, Ma L, Zhang H, Gao Y. Three Si-substituted polyoxovanadates as efficient catalysts for Knoevenagel condensation and selective oxidation of styrene to benzaldehyde. Dalton Trans 2022; 51:3304-3313. [PMID: 35133359 DOI: 10.1039/d1dt03862a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Three new Si-substituted polyoxovanadates (POVs), [Cd2(dien)2][Cd(dien)][Cd(Hdien)2][V15Si6O46(OH)2(H2O)]·7H2O (1), [Co(enMe)2]3[Co2(enMe)2(H2O)2][V16Si4O44(OH)2(H2O)]·6H2O (2), and [Co(teta)]4[V16Si4O42(OH)4(H2O)]·10H2O (3) (dien = diethylenetriamine; enMe = 1,2-diaminopropane; teta = triethylenetetramine) were synthesized by the hydrothermal method and characterized. Structural analysis sheds light on the fact that the {V15Si6O48}/{V16Si4O46} clusters of compounds 1-3 were formed by replacing {VO5} square pyramids in the classical {V18O42} cluster with {Si2O7} units. Compound 1 is a 2D bilayer structure formed by the [V15Si6O46(OH)2(H2O)]10- cluster and two types of bridging Cd complexes containing binuclear groups [Cd2(dien)2]4+. Compound 2 is a 3D framework constructed from the [V16Si4O44(OH)2(H2O)]10- cluster and two types of Co complex fragments including binuclear [Co2(enMe)2(H2O)2]4+. In compound 3, the [V16Si4O42(OH)4(H2O)]8- cluster is connected with bridging [Co(teta)]2+ to expand into a 2D network. Compounds 1 and 3 represent the first 2D assemblies based on a vanadosilicate cluster. 1-3 served as heterogeneous catalysts and exhibited highly efficient catalytic activities for the Knoevenagel condensation under mild ambient conditions with low catalyst loading, featuring the open Lewis base {V15Si6O48}/{V16Si4O46} sites and Lewis acid Cd2+/Co2+ sites. The conversion of benzaldehyde was up to 99.3% in 80 min at room temperature using 1 as a heterogeneous catalyst with only 0.37% catalyst loading. Moreover, compounds 1-3 as catalysts for selective oxidation of styrene to benzaldehyde exhibited excellent catalytic performance, high selectivity and could be readily recycled. Most strikingly, compound 1 showed excellent catalytic performance with 97.6% conversion of styrene and 100% selectivity of benzaldehyde in 15 min. In addition, the catalytic activity of catalyst 1 was well maintained after five cycling reactions.
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Affiliation(s)
- Yu Shi
- Hebei Key Laboratory of Inorganic Nano-materials, National Experimental Chemistry Teaching Center, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China.
| | - Tong Zhou
- Hebei Key Laboratory of Inorganic Nano-materials, National Experimental Chemistry Teaching Center, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China.
| | - Jia-Qi Di
- Hebei Key Laboratory of Inorganic Nano-materials, National Experimental Chemistry Teaching Center, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China.
| | - Wenhui Wang
- Hebei Key Laboratory of Inorganic Nano-materials, National Experimental Chemistry Teaching Center, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China.
| | - Li Ma
- Hebei Key Laboratory of Inorganic Nano-materials, National Experimental Chemistry Teaching Center, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China.
| | - Heng Zhang
- Hebei Key Laboratory of Inorganic Nano-materials, National Experimental Chemistry Teaching Center, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China.
| | - Yuanzhe Gao
- Hebei Key Laboratory of Inorganic Nano-materials, National Experimental Chemistry Teaching Center, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China.
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Dat NT, Ngoc Mai TT, Lin KS, Minh Thu NT, Thao NT. Reactivity of styrene with tert-butyl hydroperoxide over cu-based double hydroxide catalysts. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2020.111337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Synthesis, catalytic activity and the structural transformation of dimeric mono-Fe (Ⅲ)-substituted Keggin-type polyoxotungstates in the oxidation of cyclohexanol with H2O2. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Sadasivan R, Patel A. Flexible oxidation of styrene using TBHP over zirconia supported mono-copper substituted phosphotungstate. RSC Adv 2019; 9:27755-27767. [PMID: 35530462 PMCID: PMC9070774 DOI: 10.1039/c9ra04892h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 08/22/2019] [Indexed: 11/21/2022] Open
Abstract
A heterogeneous catalyst comprising mono-copper substituted phosphotungstate and hydrous zirconia was synthesized using wet impregnation method, characterized by various physico-chemical techniques and evaluated for solvent-free oxidation of styrene using TBHP as oxidant. Various reaction parameters like time, catalyst amount, amount of TBHP and temperature were optimized with focus on optimum selectivity of styrene-oxide. Further, the catalytic activity was compared with that of unfunctionalized PW11Cu to understand the role of the support. Finally, the role of each component of the reaction was clearly elucidated by a detailed kinetic study of the reaction using both the catalysts. Mono-copper substituted phosphotungstate was supported on hydrous zirconia by wet impregnation, characterized and evaluated for its catalytic activity in the solvent-free flexible oxidation of styrene using TBHP as oxidant.![]()
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Affiliation(s)
- Rajesh Sadasivan
- Polyoxometalates & Catalysis Laboratory
- Department of Chemistry
- Faculty of Science
- The Maharaja Sayajirao University of Baroda
- Vadooara
| | - Anjali Patel
- Polyoxometalates & Catalysis Laboratory
- Department of Chemistry
- Faculty of Science
- The Maharaja Sayajirao University of Baroda
- Vadooara
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