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Bushenkangshuai Tang 1

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Enhanced CuCl dispersion by regulating acidity of MCM-41 for catalytic oxycarbonylation of ethanol to diethyl carbonate

Pengzhen CHEN, Shouying HUANG, Jijie ZHANG, Shengping WANG, Xinbin MA

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 2,   Pages 224-231 doi: 10.1007/s11705-014-1447-5

Abstract: CuCl supported on molecular sieves has attracted increasing attention in catalyzing oxidative carbonylation

Keywords： MCM-41     acidity     oxidative carbonylation     diethyl carbonate    

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Halide-free carbonylation of methanol with H-MOR supported CuCeO

Chaoli Tong, Jiachang Zuo, Danlu Wen, Weikun Chen, Linmin Ye, Youzhu Yuan

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 5,   Pages 1075-1087 doi: 10.1007/s11705-020-2019-5

Abstract: Heterogeneous halide-free carbonylation of methanol to acetates, including methyl acetate (MA) and aceticreport that CuCeO /H-mordenite (H-MOR) catalyst can nearly eliminate the inhibiting effect of water on carbonylationon-site, and can thus achieve 96.5% methanol conversion with 87.4% MA selectivity for the halide-free carbonylationThe Cu sites facilitate the WGSR and are also active sites for methanol carbonylation.

Keywords： methanol carbonylation     halide-free     methyl acetate     H-mordenite     copper and cerium oxide    

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A density functional theory study on the mechanism of Dimethyl ether carbonylation over heteropolyacids

Kai Cai, Ying Li, Hongbao Shen, Zaizhe Cheng, Shouying Huang, Yue Wang, Xinbin Ma

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 319-329 doi: 10.1007/s11705-020-1957-2

Abstract: Dimethyl ether (DME) carbonylation is considered as a key step for a promising route to produce ethanolHeteropolyacids (HPAs) are proved to be efficient catalysts for DME carbonylation.In this work, the reaction mechanism of DME carbonylation was studied theoretically by using density

Keywords： dimethyl ether     carbonylation     mechanism     heteropolyacids     density functional theory    

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Catalytic oxidative desulfurization of gasoline using phosphotungstic acid supported on MWW zeolite

Hanlu Wang, Idris Jibrin, Xingye Zeng

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4,   Pages 546-560 doi: 10.1007/s11705-019-1842-z

Abstract: Catalysts for the desulfurization of gasoline samples were synthesized via the immobilization of well-dispersed phosphotungstic acid (HPW) on Mobil composition of matter-twenty-two (MWW) zeolite. Characterization results indicated that these catalysts possess a mesoporous structure with the retention of the Keggin structure of immobilized HPW. Relevant reaction parameters influencing sulfur removal were systematically investigated, including HPW loading, catalyst dosage, temperature, initial S-concentration, molar ratio of oxidant to sulfide (O/S), volume ratio of MeCN to model oil (Ext./oil), and sulfide species. The 40 wt-% HPW/MWW catalyst exhibited the highest catalytic activity with 99.6% dibenzothiophene sulfur removal from prepared samples. The 40 wt-% HPW/MWW catalyst was recycled four times and could be easily regenerated. Finally, as an exploratory study, straight-run-gasoline and fluid catalytic cracking gasoline were employed to accurately evaluate the desulfurization performance of 40 wt-% HPW/MWW. Our research provides new insights into the development and application of catalysts for desulfurization of gasoline.

Keywords： oxidative desulfurization     phosphotungstic acid     MWW     wet impregnation     adsorption energy    

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Apigenin alleviates neomycin-induced oxidative damage via the Nrf2 signaling pathway in cochlear hair

Frontiers of Medicine 2022, Volume 16, Issue 4,   Pages 637-650 doi: 10.1007/s11684-021-0864-3

Abstract: Oxidative stress plays an important role in the pathogenesis of aminoglycoside-induced hearing loss andDisruption of the Nrf2 axis abolished the effects of apigenin on the alleviation of oxidative stress

Keywords： apigenin     aminoglycosides     ototoxicity     oxidative stress     Nrf2 signaling pathway    

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Cobalt-nanoparticle catalysts derived from zeolitic imidazolate framework@MXene composites for efficient oxidative

Frontiers of Chemical Science and Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11705-023-2378-9

Abstract: In this study, we synthesize a catalyst comprising cobalt nanoparticles supported on MXene by pyrolyzing a composite in a N2 environment. Specifically, the composite comprises a bimetallic Zn/Co zeolitic imidazole framework grown in situ on the outer surface of MXene. The catalytic efficiency of the catalyst is tested for the self-coupling of 4-methoxybenzylamine to produce value-added imine, where atmospheric oxygen (1 atm) is used as the oxidant. Based on the results, the catalyst displayed impressive catalytic activity, achieving 95.4% yield of the desired imine at 383 K for 8 h. Furthermore, the catalyst showed recyclability and tolerance toward benzylamine substrates with various functional groups. The outstanding performance of the catalyst is primarily attributed to the synergetic catalytic effect between the cobalt nanoparticles and MXene support, while also benefiting from the three-dimensional porous structure. Additionally, a preliminary investigation of potential reaction mechanisms is conducted.

Keywords： MXene     sacrificial template     oxidative self-coupling     Co nanoparticles     imine    

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Synthesis and characterization of phosphotungstic acid/activated carbon as a novel ultrasound oxidative

Liyan LIU, Yu ZHANG, Wei TAN

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 422-427 doi: 10.1007/s11705-013-1353-2

Abstract: catalysts were then evaluated in terms of the removal of dibenzothiophene (DBT) by ultrasound-assisted oxidativeIn addition, the stability tests of PTA/AC showed that the catalytic oxidative activity of PTA/AC wasultrasound irradiation for 20 min, which makes it a promising catalyst to use in ultrasound-assisted oxidative

Keywords： phosphotungstic acid     activated carbon     ultrasound-assisted oxidative desulfurization    

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Oxidative desulfurization of fuels using ionic liquids: A review? ?

Hua Zhao,Gary A. Baker

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 3,   Pages 262-279 doi: 10.1007/s11705-015-1528-0

Abstract: non-volatile and highly designable solvents, ionic liquids (ILs) have attracted considerable attention for the oxidative

Keywords： oxidative desulfurization     ionic liquids     extraction     fuels     petroleum     polyoxometalates    

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Engineering the electronic and geometric structure of VO/BN@TiO heterostructure for efficient aerobic oxidative

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 3,   Pages 276-287 doi: 10.1007/s11705-022-2242-3

Abstract: active metal NPs and thereafter their catalytic activities remain an affordable challenge in ultra-deep oxidative

Keywords： oxidative desulfurization     boron nitride     vanadium     MXene     intercalation confinement    

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Experimental study on oxidative decomposition of nitrobenzene in aqueous solution by honeycomb ceramic-catalyzed

ZHAO Lei, MA Jun, LIU Zhengqian, YANG Yixin, SUN Zhizhong

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 1,   Pages 44-50 doi: 10.1007/s11783-008-0012-1

Abstract: The ozonation of nitrobenzene in aqueous solution was carried out in a semi-batch reactor to investigate the degradation efficiency, the effect factors, and the reaction mechanism, where honeycomb ceramic was used as a catalyst. The presence of honeycomb ceramic could improve the degradation rate of nitrobenzene by 15.46% compared to the results of ozonation alone. Under the conditions of this experiment, the degradation rate of honeycomb ceramic-catalyzed ozonation increased by 12.94% with the increase of the amount of catalyst from 1 to 5 blocks. The degradation rates all increased greatly with the increase of temperature and pH of the solution in the processes of honeycomb ceramic-catalyzed ozonation and ozonation alone. But, when the pH of the solution increased to 9.50, the advantage of the honeycomb ceramic-catalyzed ozonation process would be lost. The experimental findings indicated that in the processes of ozonation alone and honeycomb ceramic-catalyzed ozonation, nitrobenzene was primarily oxidized by OH free radical in aqueous solution. The adsorption of nitrobenzene was too limited to have an important influence on the degradation rate of nitrobenzene. With the same total dosage of applied ozone, the multiple step addition of ozone showed much higher removal efficiency than that obtained by one step in the two processes.
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Relations between indoor and outdoor PM

Cong Liu, Yinping Zhang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 1, doi: 10.1007/s11783-019-1089-4

Abstract:

Factors impacting indoor-outdoor relations are introduced.

Sulfate seems a fine tracer for other non-volatile species.

Particulate nitrate and ammonium desorb during outdoor-to-indoor transport.

OC load increases during the transport due to sorption of indoor SVOCs.

Keywords： Indoor air quality     Exposure     SVOC     Reactive oxidative species     Oxidative potential     Chemical transport model    

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Techno-economic evaluation of a biogas-based oxidative coupling of methane process for ethylene production

Alberto T. Penteado, Mijin Kim, Hamid R. Godini, Erik Esche, Jens-Uwe Repke

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 598-618 doi: 10.1007/s11705-018-1752-5

Abstract:

This contribution is a preliminary techno-economic assessment of a biogas-based oxidative coupling

Keywords： biogas conversion     ethylene production     oxidative coupling of methane     feasibility study    

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Detection of oxidative stress and DNA damage in freshwater snail

Daoud Ali, Huma Ali, Saud Alifiri, Saad Alkahtani, Abdullah A Alkahtane, Shaik Althaf Huasain

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 5, doi: 10.1007/s11783-018-1039-6

Abstract:

Deleterious effects on some oxidative stress

Keywords： Acute toxicity     Profenofos     ROS     oxidative stress     DNA damage     Lymnea luteola    

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Oxidative stress and diabetes: antioxidative strategies

Pengju Zhang, Tao Li, Xingyun Wu, Edouard C. Nice, Canhua Huang, Yuanyuan Zhang

Frontiers of Medicine 2020, Volume 14, Issue 5,   Pages 583-600 doi: 10.1007/s11684-019-0729-1

Abstract: Considerable recent evidence suggests that the cellular reduction–oxidation (redox) imbalance leads to oxidativeWe have therefore focused on the role of oxidative stress and antioxidative therapies in the pathogenesis

Keywords： diabetes     oxidative stress     redox modification     antioxidative therapy     novel antioxidant delivery    

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Oxidative treatment of aqueous monochlorobenzene with thermally-activated persulfate

Qishi LUO

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 2,   Pages 188-194 doi: 10.1007/s11783-013-0544-x

Abstract: The oxidation of aqueous monochlorobenzene (MCB) solutions using thermally- activated persulfate has been investigated. The influence of reaction temperature on the kinetics of MCB oxidation was examined, and the Arrenhius Equation rate constants at 20°C, 30°C, 40°C, 50°C, and 60°C for MCB oxidation performance were calculated as 0, 0.001, 0.002, 0.015, 0.057 min , which indicates that elevated temperature accelerated the rate. The most efficient molar ratio of persulfate/MCB for MCB oxidation was determined to be 200 to 1 and an increase in the rate constants suggests that the oxidation process proceeded more rapidly with increasing persulfate/MCB molar ratios. In addition, the reactivity of persulfate in contaminated water is partly influenced by the presence of background ions such as Cl , , , and . Importantly, a scavenging effect in rate constant was observed for both Cl and but not for other ions. The effective thermally activated persulfate oxidation of MCB in groundwater from a real contaminated site was achieved using both elevated reaction temperature and increased persulfate/MCB molar ratio.

Keywords： persulfate     monochlorobenzene     advanced oxidation process    

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Title Author Date Type Operation

Enhanced CuCl dispersion by regulating acidity of MCM-41 for catalytic oxycarbonylation of ethanol to diethyl carbonate

Pengzhen CHEN, Shouying HUANG, Jijie ZHANG, Shengping WANG, Xinbin MA

Journal Article

Halide-free carbonylation of methanol with H-MOR supported CuCeO

Chaoli Tong, Jiachang Zuo, Danlu Wen, Weikun Chen, Linmin Ye, Youzhu Yuan

Journal Article

A density functional theory study on the mechanism of Dimethyl ether carbonylation over heteropolyacids

Kai Cai, Ying Li, Hongbao Shen, Zaizhe Cheng, Shouying Huang, Yue Wang, Xinbin Ma

Journal Article

Catalytic oxidative desulfurization of gasoline using phosphotungstic acid supported on MWW zeolite

Hanlu Wang, Idris Jibrin, Xingye Zeng

Journal Article

Apigenin alleviates neomycin-induced oxidative damage via the Nrf2 signaling pathway in cochlear hair

Journal Article

Cobalt-nanoparticle catalysts derived from zeolitic imidazolate framework@MXene composites for efficient oxidative

Journal Article

Synthesis and characterization of phosphotungstic acid/activated carbon as a novel ultrasound oxidative

Liyan LIU, Yu ZHANG, Wei TAN

Journal Article

Oxidative desulfurization of fuels using ionic liquids: A review? ?

Hua Zhao,Gary A. Baker

Journal Article

Engineering the electronic and geometric structure of VO/BN@TiO heterostructure for efficient aerobic oxidative

Journal Article

Experimental study on oxidative decomposition of nitrobenzene in aqueous solution by honeycomb ceramic-catalyzed

ZHAO Lei, MA Jun, LIU Zhengqian, YANG Yixin, SUN Zhizhong

Journal Article

Relations between indoor and outdoor PM

Cong Liu, Yinping Zhang

Journal Article

Techno-economic evaluation of a biogas-based oxidative coupling of methane process for ethylene production

Alberto T. Penteado, Mijin Kim, Hamid R. Godini, Erik Esche, Jens-Uwe Repke

Journal Article

Detection of oxidative stress and DNA damage in freshwater snail

Daoud Ali, Huma Ali, Saud Alifiri, Saad Alkahtani, Abdullah A Alkahtane, Shaik Althaf Huasain

Journal Article

Oxidative stress and diabetes: antioxidative strategies

Pengju Zhang, Tao Li, Xingyun Wu, Edouard C. Nice, Canhua Huang, Yuanyuan Zhang

Journal Article

Oxidative treatment of aqueous monochlorobenzene with thermally-activated persulfate

Qishi LUO

Journal Article