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Biogenic palladium prepared by activated sludge microbes for the hexavalent chromium catalytic reduction

Luman Zhou, Chengyang Wu, Yuwei Xie, Siqing Xia

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 2, doi: 10.1007/s11783-019-1206-4

Abstract: • Pd nanoparticles could be reduced and supported by activated sludge microbes. • The effect of biomassPalladium, a kind of platinum group metal, owns catalytic capacity for a variety of hydrogenations.In this study, Pd nanoparticles (PdNPs) were generated through enzymatic recovery by microbes of activated

Keywords： Palladium nanoparticles     Activated sludge     Hexavalent chromium    

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2-Aminopyridine functionalized cellulose based Pd nanoparticles: An efficient and ecofriendly catalyst

Peibo Hu,Yahao Dong,Xiaotian Wu,Yuping Wei

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 3,   Pages 389-395 doi: 10.1007/s11705-016-1575-1

Abstract: A palladium catalyst supported on 2-aminopyridine functionalized cellulose was synthesized and fully

Keywords： cellulose-supported     2-aminopyridine     palladium nanoparticles     ecofriendly catalyst     Suzuki cross-coupling    

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Recent advances in selective acetylene hydrogenation using palladium containing catalysts

Alan J. McCue, James A. Anderson

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 2,   Pages 142-153 doi: 10.1007/s11705-015-1516-4

Abstract: Recent advances with Pd containing catalysts for the selective hydrogenation of acetylene are described. The overview classifies enhancement of catalytic properties for monometallic and bimetallic Pd catalysts. Activity/selectivity of Pd catalysts can be modified by controlling particle shape/morphology or immobilisation on a support which interacts strongly with Pd particles. In both cases enhanced ethylene selectivity is generally associated with modifying ethylene adsorption strength and/or changes to hydride formation. Inorganic and organic selectivity modifiers (i.e., species adsorbed onto Pd particle surface) have also been shown to enhance ethylene selectivity. Inorganic modifiers such as TiO change Pd ensemble size and modify ethylene adsorption strength whereas organic modifiers such as diphenylsulfide are thought to create a surface template effect which favours acetylene adsorption with respect to ethylene. A number of metals and synthetic approaches have been explored to prepare Pd bimetallic catalysts. Examples where enhanced selectivity is observed are generally associated with decreased Pd ensemble size and/or hindering of the ease with which an unselective hydride phase is formed for Pd. A final class of bimetallic catalysts are discussed where Pd is not thought to be the primary reaction site but merely acts as a site where hydrogen dissociation and spillover occurs onto a second metal (Cu or Au) where the reaction takes place more selectively.

Keywords： acetylene     ethylene     selective hydrogenation     palladium     bimetallic    

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Effect of alkyl nitrite decomposition on catalytic performance of CO coupling reaction over supported palladium

Zhenhua LI, Weihan WANG, Dongxue YIN, Jing LV, Xinbin MA

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 410-414 doi: 10.1007/s11705-012-1213-5

Abstract: The syntheses of dimethyl oxalate (DMO) and diethyl oxalate (DEO) by CO coupling reaction in gaseous phase were investigated in a fixed bed reactor over Pd-Fe/Al O catalyst. The catalytic performance was characterized by CO conversion, space-time yield (STY) and selectivity of DMO (or DEO). The results showed that over Pd-Fe/Al O catalyst, the STY of DMO was higher than that of DEO under the same reaction conditions. The optimum reaction temperatures for synthesizing DMO and DEO were 403 K and 393 K, respectively, at the molar ratio 1 ∶ 1 of alkyl nitrite to CO. The difference in synthesizing DMO and DEO on the same catalyst was attributed to the decomposition performances of methyl nitrite (MN) and ethyl nitrite (EN), as density functional theory (DFT) calculation showed that EN decomposed more easily than MN.

Keywords： palladium     CO coupling     dialkyl oxalate     alkyl nitrite     decomposition    

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Experimental research on thermal transport properties of crystallized palladium-based alloys

Siyuan CHENG, Xuguo SHI, Weigang MA, Xing ZHANG, Guanglai LIU, Mingxiang PAN, Weihua WANG

Frontiers in Energy 2018, Volume 12, Issue 1,   Pages 121-126 doi: 10.1007/s11708-018-0531-9

Abstract: Palladium-based alloy is a kind of material with a high glass forming ability and can be easily formedTo study the thermal and electrical transport properties of crystallized palladium-based alloys, thecompared to amorphous samples, the thermal conductivity and electrical conductivity of crystallized palladium-basedelectrical resistivity to temperature is a function of elemental composition for crystallized quaternary palladium-based

Keywords： palladium-based alloy     T-type method     thermal conductivity     electrical conductivity     Seebeck coefficient    

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Copolymerization of polyketones catalyzed by polyacrylonitrile resin-supported palladium acetate

GUO Jintang, ZHANG Hongxin, WANG Bo, YE Yaqin

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 2,   Pages 165-170 doi: 10.1007/s11705-008-0010-7

Abstract: prepared by the copolymerization of carbon monoxide (CO) and styrene (ST) catalyzed by PAN resin-supported palladiumThe yield of polyketone was 6.2348 g when using 1 g of resin and 22.4 mg of palladium acetate.

Keywords： copolymerization     Electron Microscopy     monoxide     excellent catalytic     Polyketone    

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Facile synthesis of isoindoline-1,3-diones by palladium-catalyzed carbonylative cyclization of

Mayur V. KHEDKAR, Bhalchandra M. BHANAGE

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2,   Pages 226-232 doi: 10.1007/s11705-013-1321-x

Abstract: A facile method for the carbonylative cyclization of -bromobenzoic acid with primary amine using Pd(OAC) as a metal precursor and 1,1'-bis(diphenylphosphino)ferrocene (dppf) as a ligand has been developed. The effect of various reaction parameters such as ligand, solvent, base, time and temperature on this cyclization was studied. The optimized protocol was used for a wide variety of substituted aryl amines with different steric and electronic properties, affording the corresponding isoindoline-1,3-diones in good to excellent yields under atmospheric pressure of carbon monoxide at 100°C within 10 h using 1,4-diazabicyclo[2.2.2]octane (DABCO) as a base. The reaction system finds attractive alternative to the conventional multistep synthetic process and thus represents an effective utilization of carbonylative protocol for synthesis of valuable chemicals.

Keywords： carbonylative cyclization reactions     isoindole-1     3-dinones     homogeneous catalysis     dppf    

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Catalysis of semihydrogenation of acetylene to ethylene: current trends, challenges, and outlook

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1031-1059 doi: 10.1007/s11705-021-2113-3

Abstract: Ethylene is an important feedstock for various industrial processes, particularly in the polymer industry. Unfortunately, during naphtha cracking to produce ethylene, there are instances of acetylene presence in the product stream, which poisons the Ziegler–Natta polymerization catalysts. Thus, appropriate process modification, optimization, and in particular, catalyst design are essential to ensure the production of highly pure ethylene that is suitable as a feedstock in polymerization reactions. Accordingly, carefully selected process parameters and the application of various catalyst systems have been optimized for this purpose. This review provides a holistic view of the recent reports on the selective hydrogenation of acetylene. Previously published reviews were limited to Pd catalysts. However, effective new metal and non-metal catalysts have been explored for selective acetylene hydrogenation. Updates on this recent progress and more comprehensive computational studies that are now available for the reaction are described herein. In addition to the favored Pd catalysts, other catalyst systems including mono, bimetallic, trimetallic, and ionic catalysts are presented. The specific role(s) that each process parameter plays to achieve high acetylene conversion and ethylene selectivity is discussed. Attempts have been made to elucidate the possible catalyst deactivation mechanisms involved in the reaction. Extensive reports suggest that acetylene adsorption occurs through an active single-site mechanism rather than via dual active sites. An increase in the reaction temperature affords high acetylene conversion and ethylene selectivity to obtain reactant streams free of ethylene. Conflicting findings to this trend have reported the presence of ethylene in the feed stream. This review will serve as a useful resource of condensed information for researchers in the field of acetylene-selective hydrogenation.

Keywords： selectivity     hydrogenation     acetylene     ethylene     palladium    

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Translocation and biotoxicity of metal (oxide) nanoparticles in the wetland-plant system

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1432-4

Abstract:

• Aquatic plants are more likely to absorb TiO2 NPs that are beneficial to them.

Keywords： Constructed wetlands     Aquatic plants     Nanoparticles     Physiological activity     Biomass    

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Enhanced 4-chlorophenol biodegradation by integrating FeO nanoparticles into an anaerobic reactor: Long-term

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1519-6

Abstract:

• 4-chlorophenol biodegradation could be enhanced in Fe2O3 coupled anaerobic system.

Keywords： Dechlorination     Fe2O3 nanoparticles     Electron transfer     Microbial community    

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Gold nanoparticles/single-stranded DNA-reduced graphene oxide nanocomposites based electrochemical biosensor

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 6,   Pages 1572-1582 doi: 10.1007/s11705-021-2112-4

Abstract: High density and uniform distribution of the gold nanoparticles functionalized single-stranded DNA modifiedThe positive gold nanoparticles prepared by phase inversion method exhibited good dimensional homogeneitybiocompatibility and provided the preferable surface with negative charge for further assembling of gold nanoparticlesto obtain gold nanoparticles/single-stranded DNA modified reduced graphene oxide nanocomposites withThe modified gold nanoparticles could further catalyze the products of cholesterol oxidation catalyzed

Keywords： reduced graphene oxide     gold nanoparticles     electrochemical biosensor     cholesterol oxidase     cholesterol    

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polymeric substances from activated sludge on the aggregation kinetics of silver and silver sulfide nanoparticles

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1450-2

Abstract:

• The NPs aggregation in the electrolyte solution is consistent with the DLVO theory.

Keywords： Silver nanoparticles     Silver sulfide nanoparticles     Extracellular polymeric substances     Aggregation kinetics    

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Size and shape effects of MnFeO nanoparticles as catalysts for reductive degradation of dye pollutants

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5,   Pages 108-171 doi: 10.1007/s11783-021-1396-4

Abstract: The magnetic nanoparticles that are easy to recycle have tremendous potential as a suitable catalystThe size and shape effects of MnFe2O4 nanoparticles demonstrated in this work notaccelerate further understanding the nature of nanocatalysts but also contribute to the precise design of nanoparticles

Keywords： Dye degradation     MnFe2O4 nanoparticles     Size and shape-control    

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Functional magnetic nanoparticles for facile viable but nonculturable bacteria separation and purification

Chunming Wang, Huirong Lin, Chengsong Ye

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 6, doi: 10.1007/s11783-016-0874-6

Abstract: PAH-coated magnetic nanoparticles (MNPs) were synthesized and found to be capable of capturing and releasing

Keywords： Drinking water biosafety     VBNC     Nanoparticles     Magnetic separation and purification    

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Size-controlled green synthesis of silver nanoparticles assisted by L-cysteine

Wenchao Zhang,Lin Zhang,Yan Sun

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 4,   Pages 494-500 doi: 10.1007/s11705-015-1527-1

Abstract: A green and size-controlled synthesis of silver nanoparticles (Ag NPs) in aqueous solution with the assistance

Keywords： nanoparticles     silver     L-cysteine     size distribution     synthesis    

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Title Author Date Type Operation

Biogenic palladium prepared by activated sludge microbes for the hexavalent chromium catalytic reduction

Luman Zhou, Chengyang Wu, Yuwei Xie, Siqing Xia

Journal Article

2-Aminopyridine functionalized cellulose based Pd nanoparticles: An efficient and ecofriendly catalyst

Peibo Hu,Yahao Dong,Xiaotian Wu,Yuping Wei

Journal Article

Recent advances in selective acetylene hydrogenation using palladium containing catalysts

Alan J. McCue, James A. Anderson

Journal Article

Effect of alkyl nitrite decomposition on catalytic performance of CO coupling reaction over supported palladium

Zhenhua LI, Weihan WANG, Dongxue YIN, Jing LV, Xinbin MA

Journal Article

Experimental research on thermal transport properties of crystallized palladium-based alloys

Siyuan CHENG, Xuguo SHI, Weigang MA, Xing ZHANG, Guanglai LIU, Mingxiang PAN, Weihua WANG

Journal Article

Copolymerization of polyketones catalyzed by polyacrylonitrile resin-supported palladium acetate

GUO Jintang, ZHANG Hongxin, WANG Bo, YE Yaqin

Journal Article

Facile synthesis of isoindoline-1,3-diones by palladium-catalyzed carbonylative cyclization of

Mayur V. KHEDKAR, Bhalchandra M. BHANAGE

Journal Article

Catalysis of semihydrogenation of acetylene to ethylene: current trends, challenges, and outlook

Journal Article

Translocation and biotoxicity of metal (oxide) nanoparticles in the wetland-plant system

Journal Article

Enhanced 4-chlorophenol biodegradation by integrating FeO nanoparticles into an anaerobic reactor: Long-term

Journal Article

Gold nanoparticles/single-stranded DNA-reduced graphene oxide nanocomposites based electrochemical biosensor

Journal Article

polymeric substances from activated sludge on the aggregation kinetics of silver and silver sulfide nanoparticles

Journal Article

Size and shape effects of MnFeO nanoparticles as catalysts for reductive degradation of dye pollutants

Journal Article

Functional magnetic nanoparticles for facile viable but nonculturable bacteria separation and purification

Chunming Wang, Huirong Lin, Chengsong Ye

Journal Article

Size-controlled green synthesis of silver nanoparticles assisted by L-cysteine

Wenchao Zhang,Lin Zhang,Yan Sun

Journal Article