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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-basedalloy fibers.

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

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Investigation of the preparation methodologies of Pd-Cu single atom alloy catalysts for selective hydrogenation

Xinxiang Cao,Arash Mirjalili,James Wheeler,Wentao Xie,Ben W.-L. Jang

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 4,   Pages 442-449 doi: 10.1007/s11705-015-1547-x

Abstract: transmission electron microscopy (HAADF-STEM) and H chemisorption results confirmed that Pd-Cu single-atom alloywhen the conversion of acetylene was above 99%, the selectivity of ethylene of these three single atom alloyFurthermore, the single atom alloy catalyst prepared by sequential incipient wetness impregnation was

Keywords： H2 pulse chemisorption     palladium-copper bimetallic catalyst     single atom alloy     acetylene hydrogenation    

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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: Palladium, a kind of platinum group metal, owns catalytic capacity for a variety of hydrogenations.

Keywords： Palladium nanoparticles     Activated sludge     Hexavalent chromium    

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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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Topology optimization and seismic collapse assessment of shape memory alloy (SMA)-braced frames: Effectivenessof Fe-based SMAs

Aydin HASSANZADEH; Saber MORADI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3,   Pages 281-301 doi: 10.1007/s11709-022-0807-3

Abstract: This paper presents a seismic topology optimization study of steel braced frames with shape memory alloyOptimal SMA-braced frames (SMA-BFs) with either Fe-based SMA or NiTi braces are determined in a performance-basedGeometric, strength, and performance-based design constraints are considered in the optimization.In addition to a lower unit price compared to NiTi, Fe-based SMAs reduce SMA material usage.In frames with Fe-based SMA braces, the SMA usage is reduced by up to 80%.

Keywords： topology optimization     shape memory alloy     Fe-based SMA     steel braced frames     performance-based seismic    

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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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Direct writing of electronics based on alloy and metal (DREAM) ink: A newly emerging area and its impact

Qin ZHANG, Yi ZHENG, Jing LIU

Frontiers in Energy 2012, Volume 6, Issue 4,   Pages 311-340 doi: 10.1007/s11708-012-0214-x

Abstract: through introduction of a new class of conductive inks made of low melting point liquid metal or its alloyThe method has been named as direct writing of electronics based on alloy and metal (DREAM) ink.melting point metal ink candidates, especially the room temperature liquid metals such as gallium and its alloy

Keywords： direct writing of electronics based on alloy and metal (DREAM) ink     direct writing of electronics     printed    

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Characterization of the tensile properties of friction stir welded aluminum alloy joints based on axial

Biranchi PANDA,A. GARG,Zhang JIAN,Akbar HEIDARZADEH,Liang GAO

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 3,   Pages 289-298 doi: 10.1007/s11465-016-0393-y

Abstract: properties, namely, ultimate tensile strength (UTS) and tensile elongation of the welded AA 7020 Al alloyA numerical approach based on genetic programming is employed to produce the functional relationshipsThe formulated models were validated based on the experimental data, using the statistical metrics.

Keywords： tensile properties     ultimate tensile strength     tensile elongation     friction stir welding     tool rotational speed     genetic programming     welding speed    

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Removal of dissolved oxygen from water using a Pd-resin based catalytic reactor

Wenxin SHI, Chongwei CUI, Liye ZHAO, Shuili YU, Xia YUN

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 107-111 doi: 10.1007/s11705-009-0154-0

Abstract: The removal of dissolved oxygen (DO) from water was studied experimentally in a Pd-resin base catalyst reactor using purified hydrogen gas as a reducing agent. The effects of various operating conditions, such as hydrogen and water flow rates, height of the catalytic resin bed, temperature, pH value and run time, on the removal of DO, had been studied extensively. The results shows that DO could be removed by the reactor from ppm to ppb levels at ambient temperature. Increases of temperature, H gas rate and the height of the catalytic resin were helpful to improve the DO removal rate. The change of pH value from 4 to 12 resulted in no effect on DO removal. Reaction time was the key factor to control the DO removal efficiency. Only when the reaction time was longer than 2.3 minutes under the experimental conditions, could a very low DO level be achieved.

Keywords： dissolved oxygen     palladium     catalytic reactor     hydrogen     resin    

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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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The development of BG2250-125 Ni-based alloy tubing used in severe sour oil field

Shen Chen,Zhang Zhonghua,Zhang Chunxia

Strategic Study of CAE 2010, Volume 12, Issue 10,   Pages 35-38

Abstract:

The development of Ni-based alloy BG2250 tubing used in severe sour gas,the mechanical properties, corrosion resistance and pipe qualities of the Ni-based alloy tubing developedThe Ni-based alloy tubing BG2250-125 has been successfully applied to Puguang gas well, which provides

Keywords： Ni-based alloy     tubing     sour well     product properties    

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Experimental investigation of liquid metal alloy based mini-channel heat exchanger for high power electronic

Manli LUO, Jing LIU

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 479-486 doi: 10.1007/s11708-013-0277-3

Abstract: A series of comparative experiments using liquid metal alloy Ga68%In20%Sn12% as coolant were conductedThis study is expected to provide valuable reference for designing future liquid metal based mini-channel

Keywords： heat exchanger     liquid metal     mini-channel     heat dissipation     heat transfer coefficient    

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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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A novel shape memory alloy actuated soft gripper imitated hand behavior

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0700-8

Abstract: The limited length shrinkage of shape memory alloy (SMA) wire seriously limits the motion range of SMA-basedIn this paper, a new soft finger without silicone gel was designed based on pre bent SMA wire, and theThe design provides a new idea for the lightweight design and convenient design of soft gripper based

Keywords： shape memory alloy (SMA)     pre bent     wire     gripper     grasping mode     lightweight    

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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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Title Author Date Type Operation

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

Investigation of the preparation methodologies of Pd-Cu single atom alloy catalysts for selective hydrogenation

Xinxiang Cao,Arash Mirjalili,James Wheeler,Wentao Xie,Ben W.-L. Jang

Journal Article

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

Luman Zhou, Chengyang Wu, Yuwei Xie, Siqing Xia

Journal Article

Recent advances in selective acetylene hydrogenation using palladium containing catalysts

Alan J. McCue, James A. Anderson

Journal Article

Topology optimization and seismic collapse assessment of shape memory alloy (SMA)-braced frames: Effectivenessof Fe-based SMAs

Aydin HASSANZADEH; Saber MORADI

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

Direct writing of electronics based on alloy and metal (DREAM) ink: A newly emerging area and its impact

Qin ZHANG, Yi ZHENG, Jing LIU

Journal Article

Characterization of the tensile properties of friction stir welded aluminum alloy joints based on axial

Biranchi PANDA,A. GARG,Zhang JIAN,Akbar HEIDARZADEH,Liang GAO

Journal Article

Removal of dissolved oxygen from water using a Pd-resin based catalytic reactor

Wenxin SHI, Chongwei CUI, Liye ZHAO, Shuili YU, Xia YUN

Journal Article

Copolymerization of polyketones catalyzed by polyacrylonitrile resin-supported palladium acetate

GUO Jintang, ZHANG Hongxin, WANG Bo, YE Yaqin

Journal Article

The development of BG2250-125 Ni-based alloy tubing used in severe sour oil field

Shen Chen,Zhang Zhonghua,Zhang Chunxia

Journal Article

Experimental investigation of liquid metal alloy based mini-channel heat exchanger for high power electronic

Manli LUO, Jing LIU

Journal Article

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

Mayur V. KHEDKAR, Bhalchandra M. BHANAGE

Journal Article

A novel shape memory alloy actuated soft gripper imitated hand behavior

Journal Article

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

Peibo Hu,Yahao Dong,Xiaotian Wu,Yuping Wei

Journal Article