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The world's first offshore wind power non-desalination of seawater in situ electrolysis for hydrogen production successfully tested in Fujian,China

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Frontiers in Energy 2023年第3期17卷 317-319页

作者： ruiqin liu 机构不详

With the global energy transformation,hydrogen energy will undoubtedly become one of the important energy sources in the *** ocean is the largest hydrogen mine on Earth,and seeking water from the ocean is an important direction for future hydrogen energy ***,the composition of seawater is very complex,containing over 90 chemical elements,as well as a large number of microorganisms and suspended particles,resulting in many technical bottlenecks and challenges such as harmful corrosiveness and toxicity,catalyst deactivation,and low electrolysis *** this reason,two different technology roadmaps of direct hydrogen production from seawater and indirect hydrogen production from seawater have been formed[1].Seawater indirect hydrogen production is essentially freshwater hydrogen ***,large-scale demonstration projects have been conducted in many countries,such as the PosHYdon Offshore Green Hydrogen Pilot Project of Netherlands[2],the Brande Hydrogen Wind Power Hydrogen Pilot Project of Siemens Gamesa[3],and the Tracebel Overdick Offshore Wind Power Hydrogen Production Platform Project of Germany[4].However,this type of technology relies heavily on large-scale desalination equipment,with complex processes and occupying a large amount of land resources,further increasing the cost of hydrogen production and the difficulty of engineering *** the concept of direct electrolysis of seawater for hydrogen production was proposed in the 1970s[5],research teams from Stanford University[6],Nanyang Technological University[7],Dalian University of Technology[8],Technical University of Berlin[9]and others have performed a lot of exploration and research around catalyst engineering,membrane material science,***,up to the present,there is still no breakthrough theory and principle to completely avoid the impact of complex components of seawater on the electrolytic hydrogen production system,which has become a global

关键词： offshore breakthrough seeking

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Electrochemical behavior and electrowinning of palladium in nitric acid media

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Science China Chemistry 2013年第12期56卷 1743-1748页

作者： liu ShengChu WEI YueZhou liu ruiqin FANG BaiZeng School of Nuclear Science and Engineering Shanghai Jiao Tong University Department of Chemical & Biological Engineering University of British Columbia Vancouver

In this study,the electrochemical behavior of Pd(II)in nitric acid media was investigated using various electrochemical *** analyzing the cyclic voltammogram of Pd(II)recorded at Pt electrode,a series of electrochemical reactions associated with palladium were recognized,indicating that Pd(II)undergoes a single step two-electrons irreversible *** reaction of Pd(II)and auto-catalytic reactions of nitrous acid are supposed to play a leading role in low and high concentrations of nitric acid,*** could facilitate the reduction of Pd(II)in relatively low nitric acid concentration(3 mol/L).The value of charge transfer coefficient was determined to be 0.18 for the measurements at 298 *** diffusion coefficient of Pd(II)increased from 1.89×10 8cm2/s at 288 K to 4.23×10 8cm2/s at 318 K,and the activation energy was calculated to be 21.5 kJ/*** electrowinning experiments,SEM images of palladium obtained by electrolysis reveal the dendrite growth in all cases,which is uniform all over the entire surface of Pt *** recovery ratios of Pd at different nitric acid concentrations are high,and the faradic efficiency of electrolysis decreases with increasing the nitric acid *** stirring was introduced during electrolysis,the electrodeposition rate of Pd increased substantially.

关键词： palladium high-level liquid waste electrochemical technique electrowinning

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ESR signals from silk fabrics irradiated by UV-rays

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Nuclear Science and Techniques 2007年第5期18卷 268-271页

作者： liu ruiqin XIE Leidong SHENG Kanglong School of Nuclear Science and Engineering Shanghai Jiaotong University Shanghai 200240 China Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 China

ESR studies were done on UV-ray irradiated silk fabric samples at room temperature. Different types of UV lamps were used and similar ESR signals were observed. The results indicate that UV-rays can produce free radicals for graft-copolymerization of monomer onto silk fibers without external additives or co additives, Also, radicals in silk fabrics irradiated by UV-rays are purer than that irradiated by γ-rays. The study suggests that UV-lights may be a better tool to improve properties of silk fabrics by grafting monomers onto the polymer chains.

关键词： UV-射线照射丝绸纤维天然高分子蛋白质

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Stability of isoHex-BTP/SiO_2-P adsorbent against acidic hydrolysis and γ-irradiation

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Science China Chemistry 2014年第11期57卷 1464-1469页

作者： WANG XinPeng NING ShunYan liu ruiqin WEI YueZhou School of Nuclear Science and Engineering Shanghai Jiao Tong University

Separation of trivalent minor actinides(MA(ⅡI): Am(ⅡI), Cm(ⅡI)) from fission products(FP) in high-level liquid waste(HLLW) is an important task in advanced nuclear-fuel reprocessing systems. For this purpose, an advanced aqueous partitioning process based on extraction chromatography method was studied. Because R-BTP extractants(R-BTP: 2,6-bis(5,6-dialkyl-1,2,4-triazin-3-yl)pyridine, R = alkyl group) exhibit high selectivity for MA(ⅡI) over trivalent rare-earth elements(RE(ⅡI)), a novel adsorbent isoHex-BTP/SiO2-P was prepared by impregnating isoHex-BTP extractant into the macroporous SiO2-P support with a mean diameter of 60 μm. The stability of isoHex-BTP/SiO2-P against nitric acid and γ-irradiation was investigated. It was found that isoHex-BTP/SiO2-P adsorbent shows good adsorption affinity to Dy(ⅡI). The hydrolytic and radiolytic stability of isoHex-BTP/SiO2-P adsorbent in 0.01 mol/L HNO3 was fairly promising. However, the adsorption amount Q of Dy(ⅡI) decreased dramatically in 3 mol/L HNO3 with the increase of the absorbed dose and became nearly zero at the absorbed dose over 46 kGy. These results suggest that with the synergetic effect of radiation and acidic hydrolysis, the adsorbent instantly loses its efficacy.

关键词： isoHex-BTP/SiO2-P γ-irradiation minor actinides adsorption HLLW

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Engineering fronts in fields of Energy and Electrical Science and Technologies in the report of Engineering Fronts 2022

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Frontiers in Energy 2023年第1期17卷 5-8页

作者： Yonglin JU ruiqin liu Lingxiao FU Editorial Office of Frontiers in Energy Shanghai Jiao Tong UniversityShanghai 200240China

The Chinese Academy of Engineering(CAE)released the Engineering Fronts 2022 on December 15,2022[1].Over 90 engineering research fronts and 90 engineering development fronts,including 3 engineering research fronts and 3 engineering development fronts in the fields of Energy and Electrical Science and Technologies were selected by the Engineering Fronts 2022,which summarized the new trends and characteristics of engineering innovation in this discipline worldwide,and was an important guide for the future development of Energy and Electrical Science and *** Fronts 2022 also provided a reference for the topic selection of Frontiers in Energy,one of the engineering journals of the CAE(Transactions of CAE).

关键词： summarized engineering discipline

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Engineering Fronts 2023 announced engineering fronts in fields of Energy and Electrical Science and Technology

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Frontiers in Energy 2024年第1期18卷 4-7页

作者： ruiqin liu Liang YIN Lingxiao FU Editorial Office of Frontiers in Energy Shanghai Jiao Tong UniversityShanghai 200240China

1 Introduction An engineering front refers to important directions that have a significant impact on and lead the future innovation of engineering science and *** is characterized by its forward looking,leading,and exploratory *** 2017,the Chinese Academy of Engineering(CAE)has annually organized a project known as“Global Engineering Fronts,”identifying and releasing engineering research fronts and engineering development fronts,tracking the trends in engineering science and technology,and actively guiding the academic development and promoting innovation in engineering science and technology.

关键词： technology. annually looking

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Facile Synthesis of Pd-Ni Nanoparticles on Reduced Graphene Oxide under Microwave Irradiation for Formic Acid Oxidation

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Chinese Journal of Chemistry 2017年第9期35卷 1405-1410页

作者： Miaoyu Li ruiqin liu Gaoyi Han Yanni Tian Yunzhen Chang Yaoming Xiao Institute of Molecular Science Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province Shanxi University Taiyuan Shanxi 030006 China

Pd and PdxNi nanoparticles have been supported on reduced graphene oxide （Pd/rGO and PdxNi/rGO） by using the microwave-assisted heating method in glycol. The morphology, composition and electrochemical performance have been characterized by TEM, XRD, XPS and electrochemical methods. The XRD and XPS results show that there are no PdNi alloy particles formed in PdxNi/rGO and the composites exist mostly in the form of Pd^0 and NiOOH species. The electrochemical results reveal that PdxNi/rGO synthesized from the feeding source of Pd and Ni with an atomic ratio of 4 ： 1 exhibits higher activity, better stability and smaller electron transfer resistance to- ward formic acid electro-oxidation compared with commercial Pd/C, Pd/rGO and other PdxNi/rGO samples. The excellent electrocatalytic performance indicates that the addition of appropriate amount of Ni can greatly enhance the activity and stability of Pd catalysts for formic acid oxidation.

关键词： graphene palladium palladium-nickel formic acid electro-oxidation

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An advanced partitioning process for key elements separation from high level liquid waste

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Science China Chemistry 2012年第9期55卷 1726-1731页

作者： WEI YueZhou WANG XinPeng liu ruiqin WU Yan USUDA Shigekazu ARAI Tsuyoshi School of Nuclear Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China Cyclotron and Radioisotope Center Tohoku University Aoba-ku Sendai 980-8578 Japan Shibaura Institute of Technology Koto-ku Tokyo 135-8548 Japan

To separate MA （Am, Cm） and some fission product elements （FPs） such as Tc, Pd, Cs and Sr from high level liquid waste （HLLW） systematically, we have been studying an advanced aqueous partitioning process, which uses selective adsorption as the separation method. For this process, we prepared several novel adsorbents which were immobilized in a porous sili- c^polymer composite support （SiO2-P）. Adsorption and separation behavior of various elements was studied experimentally in detail. Small scale separation tests using simulated HLLW solutions were carried out. Pd（II） was strongly adsorbed by the AR-01 anion exchanger and effectively eluted off by using thiourea. Successful separation of Pd（ll） from simulated HLLW was achieved. Te（VII） also exhibited strong adsorption on AR-01 and could be eluted off by using U（IV） as a reductive eluent. Am（Ⅲ） presented significantly high adsorbability and selectivity onto R-BTP/SiOz-P adsorbents over various FPs including Ln（Ⅲ）. The R-BTP adsorbents were fairly stable in 3 M HNO3, but instable against 7-irradiation-3M HNO3. An advanced par- titioning process consisting of three separation columns for the target elements separation from HLLW was proposed and the obtained experiment results indicated that the proposed process is essentially feasible.

关键词： HLLW minor actinides fission products separation novel adsorbents extraction chromatography ion exchange waste minimization valuable elements utilization

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Challenges to develop single-column MA(Ⅲ) separation from HLLW using R-BTP type adsorbents

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Science China Chemistry 2012年第9期55卷 1732-1738页

作者： USUDA Shigekazu WEI YueZhou liu ruiqin LI Zheng XU YuanLai WU Yan KIM Seongyun Cyclotron and Radioisotope Center Tohoku UniversityAoba 6-3AramakiAoba-kuSendai 980-8578Japan School of Engineering Tohoku UniversityAoba 6-6-01-2AramakiAoba-kuSendai 980-8578Japan School of Nuclear Science and Engineering Shanghai Jiao Tong University800 Dongchuan RoadShanghai 200240China

In order to directly separate trivalent minor actinides （MA： Am, Cm） from fission products （FP） containing rare earths （RE） in high level radioactive liquid waste （HLLW）, the authors have challenged to develop a simplified MA separation process by extraction chromatography using a single column. Attention has been paid to a new type of nitrogen-donor ligands, R-BTP （2,6-bis（5,6-dialkyl-1,2,4-triazin-3-yl） pyridine, R： alkyl group） as an extractant because it shows high extraction selectivity for Am（Ⅲ） over RE（Ⅲ）. It is known that the R-BTP ligands show different properties such as adsorbability and stability by hav- ing different alkyl groups. Therefore, some novel adsorbents were prepared by impregnating different types of R-BTP ligands （isohexyl-, isoheptyl- and cyheptyl-BTP） and a similar ligand to the R-BTP, ATP （2,6-bis（l-aryl-lH-tetrazol-5-yl）pyridines）, into the porous silica/polymer support （SiOrP particles）. This work deals with comparison in adsorption and desorption prop- erties of Am and some FP in HNO3 solution onto such R-BTP type adsorbents, as well as chemical and radiolytic stability of the adsorbents. Then the possibility of a single-column separation of MA from main FP was pursued by evaluating the results of column experiments using the most promising adsorbent （isohexyl-BTP/SiO2-P） under temperature control. In addition, elu- tion behaviors of U and Pd were also estimated.

关键词： R-BTP/SiO2-P type adsorbents single-column separation trivalent minor actinides (MA) adsorbability and stability fission products (FP) rare earths (RE) temperature control

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Evaluation study on properties of a macroporous silica-based CMPO extraction resin to be used forminor actinides separation from high level liquid waste

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Nuclear Science and Techniques 2011年第1期22卷 18-24页

作者： liu ruiqin WEI Yuezhou Daisuke Tozawa XU Yuanlai Shigekazu Usuda Hiromichi Yamazaki Keizo Ishii Yuichi Sano Yoshikazu Koma School of Nuclear Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Cyclotron and Radioisotope Center Tohoku UniversityAoba 6-3Aramaki-Aoba-kuSendaiMiyagi980-8578Japan Japan Atomic Energy Agency (JAEA) TokaiIbaraki319-1195Japan

Basic properties of a silica-based octyl(phenyl)-N,N-diisobutylcarbamoyl-methylphosphine oxide (CMPO) extraction resin (CMPO/SiO2-P) was *** behavior for some rare earth elements (RE) which are constituents of high level liquid waste (HLLW) and the long-term stability of the extraction resin in nitric acid solution were *** CMPO extraction resin was significantly stable in 3 mol·L?1 HNO3 solution at ***,the RE(III) were efficiently separated from non-adsorptive fission product (FP) elements such as Sr(II) in a column experiment using a highly nitric acid *** separation behaviors of the elements are considered to result from the difference in their adsorption and elution selectivity based on the complex formation with *** was no strong dependency of RE(III) separation efficiency on feed solution flow *** from the perspectives of the acid-resistant behavior of CMPO extraction resin and the elution kinetics for the metal ions with the extraction resin,the CMPO extraction resin can be used in the modified MAREC process for HLLW partitioning.

关键词：萃取树脂高放废液锕系元素分离性能大孔硅提取基础选择性吸附

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