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Current challenge and perspective of PGM-free cathode catalysts for PEM fuel cells

Gang WU

Frontiers in Energy 2017, Volume 11, Issue 3,   Pages 286-298 doi: 10.1007/s11708-017-0477-3

Abstract: To significantly reduce the cost of proton exchange membrane fuel cells, platinum-group metal (PGM)-freecathode catalysts are highly desirable.Current M-N-C (M: Fe, Co or Mn) catalysts are considered the most promising due to their encouragingStructural and chemical controlled precursors such as metal-organic frameworks are highly desirable formaking catalysts with an increased density of active sites and strengthening local bonding structures

Keywords： oxygen reduction     fuel cells     cathode     nonprecious metal catalysts     carbon nanocomposites    

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Metal size effects over metal/zeolite bifunctional catalysts in the selective hydroalkylation of benzene

Frontiers of Chemical Science and Engineering 2024, Volume 18, Issue 4, doi: 10.1007/s11705-024-2406-4

Abstract: Bifunctional metal/zeolite materials are some of the most suitable catalysts for the direct hydroalkylationperformance of this reaction is strongly influenced by the hydrogenation, which is dependent on the metalThus, systematically investigating the metal size effects in the hydroalkylation of benzene is essentialWe demonstrated the size-dependent catalytic activity of zeolite-supported Ru and Pd catalysts in the/zeolite bi-functional catalysts.

Keywords： size effects     bifunctional catalysts     metal/zeolite     hydroalkylation    

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Metal-free, carbon-based catalysts for oxygen reduction reactions

Zhiyi Wu,Zafar Iqbal,Xianqin Wang

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 3,   Pages 280-294 doi: 10.1007/s11705-015-1524-4

Abstract: Developing metal-free, carbon-based catalysts to replace platinum-based catalysts for oxygen reductionCompared to metallic catalysts, these materials are highly active, stable, inexpensive, and environmentallydistribution of the incorporated heteroatoms, as well as better understanding the ORR mechanisms in these catalysts

Keywords： oxygen reduction reaction     electrocatalysis     metal-free     carbon-based     polynitrogen    

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Highly efficient and active Co–N–C catalysts for oxygen reduction and Zn–air batteries

Frontiers in Energy 2024, Volume 18, Issue 4,   Pages 436-446 doi: 10.1007/s11708-024-0928-6

Abstract: This resulting Co–N–C catalysts exhibited well-defined nanofiber networks, and the Brunauer-Emmett-TellerElectrochemical experiments demonstrated that the Co–N–C catalysts achieved the half-wave potential (highlight the advantageous stability enhancement associated with the utilization of Co in the Co–N–C catalysts

Keywords： oxygen reduction reaction (ORR)     oxygen evolution reaction (OER)     non-noble metal catalysts     Co–N–C catalysts    

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Transition metal-doped heteropoly catalysts for the selective oxidation of methacrolein to methacrylic

Yanxia Zheng,Heng Zhang,Lei Wang,Suojiang Zhang,Shaojun Wang

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 1,   Pages 139-146 doi: 10.1007/s11705-015-1548-9

Abstract: Fe, Co, Ni, Cu or Zn) and Cs Cu H P Mo VO ( = 0.1, 0.3 or 0.7) were synthesized and then used as catalystsThe effects of the transition metals on the structure and activity of the catalysts were investigatedFTIR spectra showed that the transition metal-doped catalysts maintained the Keggin structure of theundoped catalysts.secondary structures, while the catalysts doped with Co, Ni or Zn had both triclinic and cubic phases

Keywords： heteropoly compounds     transition metals     selective oxidation     methacrolein    

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Diffusion process in enzyme–metal hybrid catalysts

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 921-929 doi: 10.1007/s11705-022-2144-4

Abstract: Enzyme–metal hybrid catalysts bridge the gap between enzymatic and heterogeneous catalysis, which isPrevious studies have demonstrated that the enzyme–metal hybrid catalysts exhibited considerably highercatalysts.Here, we investigated the diffusion process in enzyme–metal hybrid catalysts using Pd/lipase-Pluronicsites, which provides a theoretical foundation for the rational design of enzyme–metal hybrid catalysts

Keywords： enzyme–metal hybrid catalyst     internal diffusion     proximity effect     kinetic model    

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Transition metal doped mesoporous titania with a crystalline framework as catalysts for oxidation of

YANG Zehui, OU Encai, WANG Yunan, PENG Li, WANG Jiaqiang, YIN Lihui

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 296-300 doi: 10.1007/s11705-008-0044-x

Abstract: Transition metal M (M = Mn, Fe, Co, Ni, Cu, and Zn) doped mesoporous titania with a crystalline frameworkwas employed as catalysts for the oxidation of -bromotoluene (PBT) to -bromobenzaldehyde (BBD) in aceticAmong these catalysts, the Co/meso-TiO exhibited high substrate conversion and good product (-bromobenzaldehyde

Keywords： selectivity     conversion     -bromobenzaldehyde     aqueous hydrogen     oxidation    

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Metal salts with highly electronegative cations as efficient catalysts for the liquid-phase nitration

Shenghui Zhou, Kuiyi You, Zhengming Yi, Pingle Liu, Hean Luo

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 2,   Pages 205-210 doi: 10.1007/s11705-017-1625-3

Abstract: Metal salts with highly electronegative cations have been used to effectively catalyze the liquid-phaseIn addition, it was determined that the metal counterion and the presence of water hydrates in the salt

Keywords： metal salts     electronegativity     nitrobenzene     NO2     catalytic nitration    

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Oxygen reduction electrocatalysis: From conventional to single-atomic platinum-based catalysts for proton

Frontiers in Energy 2024, Volume 18, Issue 2,   Pages 206-222 doi: 10.1007/s11708-023-0907-3

Abstract: Platinum (Pt)-based materials are still the most efficient and practical catalysts to drive the sluggish/nanostructuring Pt particles and modifying/innovating supports in developing conventional Pt-based catalysts, Pt single-atom catalysts (Pt SACs) as the recently burgeoning hot materials with a potential to achieveThe single-atomic Pt coordinating with non-metals and alloying with metals as well as the metal-supportsingle-atoms with carbon/non-carbon supports are emphasized in terms of the ORR activity and stability of the catalysts

Keywords： oxygen reduction electrocatalysis     Pt single-atom catalysts     conventional Pt-based catalysts     designthoughts and synthesis     metal-support interactions    

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Preparation of rare-earth metal complex oxide catalysts for catalytic wet air oxidation

LI Ning, LI Guangming, YAO Zhenya, ZHAO Jianfu

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 2,   Pages 190-195 doi: 10.1007/s11783-007-0033-1

Abstract: Developing catalysts with high activity and stability is crucial for the application of the CWAO processThe Mn/Ce complex oxide catalysts for CWAO of high concentration phenolcontaining wastewater were preparedThe Mn/Ce serial catalysts were characterized by Brunauer Emmett Teller (BET) analysis and the metalThe results show that the catalysts have high catalytic activities even at a low temperature (80?

Keywords： torch-atomic emission     Brunauer     Catalytic     process     stability    

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Recent advances on metal-free graphene-based catalysts for the production of industrial chemicals

Zhiyong Wang, Yuan Pu, Dan Wang, Jie-Xin Wang, Jian-Feng Chen

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 855-866 doi: 10.1007/s11705-018-1722-y

Abstract: With the development of carbon catalysts, graphene-based metal-free catalysts have drawn increasing attentionIn recent years, the catalytic activities of metal-free catalysts have significantly improved and theyhave become promising alternatives to traditional metal-based catalysts.The use of metal-free catalysts greatly improves the sustainability of chemical processes.In view of this, the recent progress in the preparation of graphene-based metal-free catalysts along

Keywords： graphene-based materials     metal-free catalyst     industrial chemical productions     catalytic reaction    

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Modified iron-molybdate catalysts with various metal oxides by a mechanochemical method: enhanced formaldehyde

Xue Liu, Lingtao Kong, Shengtao Xu, Chaofan Liu, Fengyun Ma

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 5,   Pages 1099-1110 doi: 10.1007/s11705-020-2008-8

Abstract: A mechanochemical method was employed to prepare modified iron molybdate catalysts with various metalThe physicochemical properties of the iron molybdate catalysts were characterized, and their performancesIron molybdate catalysts doped with Co(NO ) ·6H O and Al(NO ) ·9H O resulted in high HCHO yields.

Keywords： iron molybdate catalyst     metal oxides     methanol to formaldehyde     Co/Mo ratio     formaldehyde yield    

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Studies on QSAR of metalloporphyrin catalysts in the oxidation of cyclohexane to adipic acid

CHEN Yixia, SHE Yuanbin, XU Jing, LI Yan

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 2,   Pages 155-161 doi: 10.1007/s11705-007-0029-1

Abstract: The turnover numbers (TON) data of 19 catalysts were obtained experimentally under optimal reaction conditionswith the (the energy level of the lowest unoccupied molecule orbit) and L (the bond length between metal-nitrogenproposed structure-activity relationship model could be applied to design some new metalloporphyrin catalysts

Keywords： cyclohexane     concerned metalloporphyrin     structure-activity relationship     metal-nitrogen     oxidation    

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Zinc modification of Ni-Ti as efficient NiZnTi catalysts with both geometric and electronic improvements

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 4,   Pages 461-474 doi: 10.1007/s11705-021-2072-8

Abstract: is an environmentally friendly technology for aniline production, and it is crucial to develop noble-metal-freecatalysts that can achieve chemoselective hydrogenation of nitroaromatics under mild reaction conditionsIn this work, zinc-modified Ni-Ti catalysts (NixZnyTi1These findings provide a rational strategy for the development of highly active non-noble-metal hydrogenationcatalysts.

Keywords： bimetal strategy     oxygen vacancy     non-noble metal catalyst     hydrogenation     aromatic nitro compounds    

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PM-support interfacial effect and oxygen mobility in Pt, Pd or Rh-loaded (Ce,Zr,La)O catalysts

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1369-z

Abstract:

• Pt/CZL exhibits the optimum catalytic performance for HC and NOx elimination.

Keywords： Precious metal-loaded (Ce     Zr     La)O2 catalysts     Oxygen mobility     Catalytic performance    

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Title Author Date Type Operation

Current challenge and perspective of PGM-free cathode catalysts for PEM fuel cells

Gang WU

Journal Article

Metal size effects over metal/zeolite bifunctional catalysts in the selective hydroalkylation of benzene

Journal Article

Metal-free, carbon-based catalysts for oxygen reduction reactions

Zhiyi Wu,Zafar Iqbal,Xianqin Wang

Journal Article

Highly efficient and active Co–N–C catalysts for oxygen reduction and Zn–air batteries

Journal Article

Transition metal-doped heteropoly catalysts for the selective oxidation of methacrolein to methacrylic

Yanxia Zheng,Heng Zhang,Lei Wang,Suojiang Zhang,Shaojun Wang

Journal Article

Diffusion process in enzyme–metal hybrid catalysts

Journal Article

Transition metal doped mesoporous titania with a crystalline framework as catalysts for oxidation of

YANG Zehui, OU Encai, WANG Yunan, PENG Li, WANG Jiaqiang, YIN Lihui

Journal Article

Metal salts with highly electronegative cations as efficient catalysts for the liquid-phase nitration

Shenghui Zhou, Kuiyi You, Zhengming Yi, Pingle Liu, Hean Luo

Journal Article

Oxygen reduction electrocatalysis: From conventional to single-atomic platinum-based catalysts for proton

Journal Article

Preparation of rare-earth metal complex oxide catalysts for catalytic wet air oxidation

LI Ning, LI Guangming, YAO Zhenya, ZHAO Jianfu

Journal Article

Recent advances on metal-free graphene-based catalysts for the production of industrial chemicals

Zhiyong Wang, Yuan Pu, Dan Wang, Jie-Xin Wang, Jian-Feng Chen

Journal Article

Modified iron-molybdate catalysts with various metal oxides by a mechanochemical method: enhanced formaldehyde

Xue Liu, Lingtao Kong, Shengtao Xu, Chaofan Liu, Fengyun Ma

Journal Article

Studies on QSAR of metalloporphyrin catalysts in the oxidation of cyclohexane to adipic acid

CHEN Yixia, SHE Yuanbin, XU Jing, LI Yan

Journal Article

Zinc modification of Ni-Ti as efficient NiZnTi catalysts with both geometric and electronic improvements

Journal Article

PM-support interfacial effect and oxygen mobility in Pt, Pd or Rh-loaded (Ce,Zr,La)O catalysts

Journal Article