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Exploration of the oxygen transport behavior in non-precious metal catalyst-based cathode catalyst layer

Shiqu CHEN, Silei XIANG, Zehao TAN, Huiyuan LI, Xiaohui YAN, Jiewei YIN, Shuiyun SHEN, Junliang ZHANG

Frontiers in Energy 2023, Volume 17, Issue 1,   Pages 123-133 doi: 10.1007/s11708-022-0849-1

Abstract: proton exchange membrane fuel cells (PEMFCs), in which Pt-based catalysts employed in the cathodic catalystAlthough non-precious metal catalysts (NPMCs) show appreciable activity and stability in the oxygen reductionTherefore, most studies on NPMC-based fuel cells focus on developing highly active catalysts rather thandummy catalyst layer (DCL) and the other containing only the NPMC-based CCL.Results show that the ratios of local and bulk oxygen transport resistances in NPMC-based CCL are 80%

Keywords： proton exchange membrane fuel cells (PEMFCs)     non-precious metal catalyst (NPMC)     cathode catalyst layer    

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Non-toxic, high selectivity process for the extraction of precious metals from waste printed circuit

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1723-z

Abstract:

● Au, Ag and Pd were recovered from WPCBs with high efficiencies.

Keywords： Thiosulfate     Printed circuit boards     Precious metals     Leaching     Hydrometallurgy    

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

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-freesmaller Ni particle size, more oxygen vacancies, higher dispersion and greater concentration of Ni on the catalystThese findings provide a rational strategy for the development of highly active non-noble-metal hydrogenation

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

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Catalytic activity of noble metal nanoparticles toward hydrodechlorination: influence of catalyst electronic

Man ZHANG,Feng HE,Dongye ZHAO

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 888-896 doi: 10.1007/s11783-015-0774-1

Abstract: These metal nanoparticles were then tested for catalytic hydrodechlorination toward two classes of organochlorinatedat the Fermi level) of the metals, suggesting that adsorption of organochlorinated reactants on the metalcatalyst surfaces is the rate-limiting step for catalytic hydrodechlorination.hydrodechlorination rates of TCE and PCE correlated with the adsorption energies of their molecular (non-dissociative

Keywords： catalytic hydrodechlorination     electronic structure     metal nanoparticles     reaction mechanisms    

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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 highercatalytic efficiency in cascade reactions, compared with that of the combination of separated enzyme and metalHere, we investigated the diffusion process in enzyme–metal hybrid catalysts using Pd/lipase-Pluronicactive sites, which provides a theoretical foundation for the rational design of enzyme–metal hybrid

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

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Micro-sized hydrothermal carbon supporting metal oxide nanoparticles as efficient catalyst for mono-dehydration

Cheng PAN, Chao FAN, Wanqin WANG, Teng LONG, Benhua HUANG, Donghua ZHANG, Peigen SU, Aqun ZHENG, Yang SUN

Frontiers in Energy 2022, Volume 16, Issue 5,   Pages 822-839 doi: 10.1007/s11708-020-0677-0

Abstract: To improve the mono-dehydration efficiency, a series of metal-containing hydrothermal carbonaceous materials(HTC) are prepared as catalyst in this work.

Keywords： hydrothermal carbon     morphology     catalyst     mono-dehydration     sugar alcohol    

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Fischer-Tropsch synthesis by reduced graphene oxide nanosheets supported cobalt catalysts: Role of support and metalnanoparticle size on catalyst activity and products selectivity

Hasan Oliaei Torshizi, Ali Nakhaei Pour, Ali Mohammadi, Yahya Zamani, Seyed Mehdi Kamali Shahri

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 299-309 doi: 10.1007/s11705-020-1925-x

Abstract: activity results showed that the cobalt-time yield and turnover frequency passed from a maximum for catalyst

Keywords： cobalt catalyst     cobalt particle size     Fischer-Tropsch synthesis     reduced graphene oxide     supported catalyst    

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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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A critical review on the recycling of copper and precious metals from waste printed circuit boards using

Zebing Wu, Wenyi Yuan, Jinhui Li, Xiaoyan Wang, Lili Liu, Jingwei Wang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-0995-6

Abstract: boards (PCBs) have become of global concern with regard to environmental issues because of their high metalSuch waste PCBs contain precious metals which are of monetary value.Therefore, it is beneficial to recover the metal content and protect the environment from pollution.Hydrometallurgy is a successful technique used worldwide for the recovery of precious metals (especiallyThis article reviews the recent trends and developments with regard to the recycling of precious metals

Keywords： Waste PCBs     Precious metals     Hydrometallurgy     Recycling     Leaching     Recovery    

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Technology of cleaning and protecting corrosion for metal structures in large-scale non-grid-connected

Wu Hao,Zou Yizhe and Bai Ke

Strategic Study of CAE 2015, Volume 17, Issue 3,   Pages 41-44

Abstract:

The equipments of large-scale non-grid-connected wind power should be cleaned and properly treatedIt is necessary， especially for metal structures.In this paper， the methods of cleaning， rinsing and treating metal parts would be studied.

Keywords： large-scale non-grid-connected wind power； metal； clean； protect corrosion； pretreatment    

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Recovery of rare and precious metals from urban mines—A review

Mengmeng Wang, Quanyin Tan, Joseph F. Chiang, Jinhui Li

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-0963-1

Abstract: The recovery of rare and precious metals (RPMs) from urban mines has attracted increasing attention from

Keywords： Rare and precious metals (RPMs)     Distribution characteristics     Recycling technology     Emerging technology    

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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 metalCompared with a commercial catalyst, the HCHO yields in the reaction with the modified catalyst at an

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

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Reliability Analysis and Design of Non-pillar Continuous Mining in Underground Metal Mines

Gu Desheng,Deng Jian,Li Xibing

Strategic Study of CAE 2001, Volume 3, Issue 1,   Pages 51-57

Abstract:

A high-efficient one-step mining method, Non-pillar continuous mining (NPCM), was originally put forward

Keywords： underground metal mine     non-pillar continuous mining (NPCM)     reliability     backfilling     temporary ore wall    

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Study of the Behaviour of Precious Metals in Metallurgy Processes in Terms of Atomic Structure

Chen Jing

Strategic Study of CAE 1999, Volume 1, Issue 2,   Pages 34-40

Abstract:

The differences of chemical characteristics of Fe, Co, Ni, Cu 3d and other eight precious metal elementsin M group and Ⅷ group, together with that of precious metal elements of Ru, Rh, Pd, Ag 4d and Os, IrFrom the practice of extraction metallurgy of precious metals from copper-sulphide nickel ores, the paperdiscussed the behaviour of precious metal elements in thermometallurgical processes such as baking-reduction

Keywords： atomic structure     precious metals     extractive metallurgy    

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Title Author Date Type Operation

Exploration of the oxygen transport behavior in non-precious metal catalyst-based cathode catalyst layer

Shiqu CHEN, Silei XIANG, Zehao TAN, Huiyuan LI, Xiaohui YAN, Jiewei YIN, Shuiyun SHEN, Junliang ZHANG

Journal Article

Non-toxic, high selectivity process for the extraction of precious metals from waste printed circuit

Journal Article

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

Journal Article

Catalytic activity of noble metal nanoparticles toward hydrodechlorination: influence of catalyst electronic

Man ZHANG,Feng HE,Dongye ZHAO

Journal Article

Diffusion process in enzyme–metal hybrid catalysts

Journal Article

Micro-sized hydrothermal carbon supporting metal oxide nanoparticles as efficient catalyst for mono-dehydration

Cheng PAN, Chao FAN, Wanqin WANG, Teng LONG, Benhua HUANG, Donghua ZHANG, Peigen SU, Aqun ZHENG, Yang SUN

Journal Article

Fischer-Tropsch synthesis by reduced graphene oxide nanosheets supported cobalt catalysts: Role of support and metalnanoparticle size on catalyst activity and products selectivity

Hasan Oliaei Torshizi, Ali Nakhaei Pour, Ali Mohammadi, Yahya Zamani, Seyed Mehdi Kamali Shahri

Journal Article

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

Journal Article

A critical review on the recycling of copper and precious metals from waste printed circuit boards using

Zebing Wu, Wenyi Yuan, Jinhui Li, Xiaoyan Wang, Lili Liu, Jingwei Wang

Journal Article

Technology of cleaning and protecting corrosion for metal structures in large-scale non-grid-connected

Wu Hao,Zou Yizhe and Bai Ke

Journal Article

Recovery of rare and precious metals from urban mines—A review

Mengmeng Wang, Quanyin Tan, Joseph F. Chiang, Jinhui Li

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

Reliability Analysis and Design of Non-pillar Continuous Mining in Underground Metal Mines

Gu Desheng,Deng Jian,Li Xibing

Journal Article

Study of the Behaviour of Precious Metals in Metallurgy Processes in Terms of Atomic Structure

Chen Jing

Journal Article