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Green process for hydrogenation of methyl ricinoleate to methyl 12-hydroxystearate over diatomite supported Cu/Ni bimetallic catalyst

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Green Chemical Engineering 2021年第2期2卷 187-196页

作者： Xiao Zhang Hong-Ru li feng-Ge Zhao Xiao-Ying Cui feng Ye liang-nian He State Key Laboratory and Institute of Elemento-Organic Chemistry College of ChemistryNankai UniversityTianjin300071China College of Pharmacy Nankai UniversityTianjin300353China Nankai University Engineering Research Center for Castor Tianjin300071China

A series of diatomite supported Cu/Ni bimetallic catalysts were prepared using the co-impregnation method to improve the efficiency and selectivity toward methyl 12-hydroxystearate in the hydrogenation of methyl *** catalysts were characterized using X-ray diffraction(XRD),transmission electron microscopy(TEM),scanning electron microscopy and energy dispersive X-ray spectroscopy(SEM-EDS),X-ray photoelectron spectroscopy(XPS)and temperature programmed reduction(H2-TPR).All the characterization results verified the formation of highly dispersed Cu/Ni alloy on ***,by subtly regulating the Ni/Cu molar ratio as well as the reaction parameters,the hydrogenation of methyl ricinoleate to methyl 12-hydroxystearate proceeded efficiently and selectively,affording 97%yield of methyl 12-hydroxystearate and nearly equivalent conversion of methyl ricinoleate under 2 MPa H2 pressure and at 130 C in 4 h with only 1 wt%of the catalyst Ni7Cu1/diatomite(based on methyl ricinoleate).Besides,the supported Cu–Ni bimetallic catalyst is stable during recycle and *** five cycles of reuse,much catalytic activity is still ***,this low-cost and stable bimetallic catalyst would be promising for the hydrogenation of methyl ricinoleate to methyl 12-hydroxystearate,representing an example of green catalysis for efficiently conversion of biomass to value-added chemicals and materials.

关键词： Biomass Green process Hydrogenation Methyl 12-hydroxystearate Supported bimetallic catalyst Sustainable chemistry

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Multicolor electrochemiluminescence of core-shell CdSe@ZnS quantum dots based on the size effect

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Science China Chemistry 2016年第11期59卷 1508-1512页

作者： Qi-Le li Shou-nian Ding Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research School of Chemistry and Chemical Engineering Southeast University

Multicolor electrochemiluminescence(ECL) of semiconductor nanocrystals tuned by size effect has been successfully achieved using quantum dots(QDs) with core-shell structure for the first time. It would open a new way and provide a guidance for design and preparation of stable and strong multicolor ECL emitters for simultaneous multicomponent analysis application.

关键词： CdSe@ZnSQDs electrochemiluminescence size effect multicolor

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Effect of Progressive Substitution of Cement and lime by Powdered Shells Used as a Curing Agent for Dredged Soil in a Port Area

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期 88-102页

作者：孙阳 WANG Faxin SU Yaying li Yiwei HE feng College of Harbour Coastal and Offshore Engineering Hohai University Huai'an Research Institute Hohai University Jiangsu Fangyang Industrial Investment Corp. Ltd.

This study aimed to address the challenges of solid waste utilization,cost reduction,and carbon reduction in the treatment of deep-dredged soil at Xuwei Port in lianyungang city of *** research in this area was ***,a curing agent made from powdered shells was used to solidify the dredged soil in *** employed laboratory orthogonal tests to investigate the physical and mechanical properties of the powdered shell-based curing *** was collected by conducting experiments to assess the role of powdered shells in the curing process and to determine the optimal ratios of powdered shells to solidified soil for different *** development of strength in solidified soil was studied in both seawater and pure water *** study revealed that the strength of the solidified soil was influenced by the substitution rate of powdered shells and their interaction with *** cement content had a positive effect on *** high-strength solidified soil,the recommended ratio of wet soil:cement:lime:powdered shells were 100:16:4:4,while for low-strength solidified soil,the recommended ratio was 100:5.4:2.4:***,under appropriate conditions,improved short-term strength by promoting the formation of expansive ettringite minerals that contributed to cementation and *** findings suggest that the combination of cement and powdered shells is synergistic,positively affecting the strength of solidified *** recommended ratios provide practical guidance for achieving desired strength levels while considering factors such as cost and carbon *** role of seawater in enhancing short-term strength through crystal formation is noteworthy and can be advantageous for certain *** conclusion,this research demonstrates the potential of using a powdered shell-based curing agent for solidifying dredged soil in an environmentally friendly and cost-effective *** recommended ratios for different str

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Programmable quantum processor implemented with superconducting circuit

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Communications in Theoretical Physics 2021年第5期73卷 33-37页

作者： nian-Quan Jiang Xi liang Ming-feng Wang College of Mathematics and Physics Wenzhou UniversityWenzhou 325035China

A quantum processor might execute certain computational tasks exponentially faster than a classical ***,using superconducting quantum circuits we design a powerful universal quantum processor with the structure of symmetric all-to-all capacitive *** present the Hamiltonian and use it to demonstrate a full set of qubit operations needed in the programmable universal quantum *** the device the unwanted crosstalk and ZZ-type couplings between qubits can be effectively suppressed by tuning gate voltages,and the design allows efficient and high-quality couplings of *** available technology,the scheme may enable a practical programmable universal quantum computer.

关键词： programmable quantum processor universal quantum gate superconducting qubit

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Novel Phenomenon on Valence Unvariation of Doping Ion in Yb:YAG Transparent Ceramics Using MgO Additives

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Journal of Wuhan University of Technology(Materials Science) 2013年第2期28卷 320-324页

作者：卢忠文卢铁城 WEI nian MA Benyuan ZHANG Wei li feng GUAN Yongbing Department of Physics Key Laboratory of Radiation Physics and Technology of Ministry of Education Sichuan University International Center for Material Physics Chinese Academy of Sciences

Yb：YAG nanopowders were synthesized by the alcohol-water co-precipitatlon method adding MgO as sintering additives. Appropriate amount of MgO adding can restrict the agglomeration and reduce the particle size of Yb：YAG powders. When the MgO content was 0.04wt%, well-dispersed Yb：YAG powders with ellipsoidal particles of less than 100 nm diameter were obtained. The experimental results showed the valence variation of doping ion Yb〉 would not appear when adding MgO as sintering additives, so ceramics showed colorless transparent instead of green due to Yb^2＋ color center using traditional SiO2 as additives. The transmission of the sintered Yb：YAG ceramics can reach 80.6% even without annealing. Ceramic morphology showed that the grains had uniform-distribution with the size of 10 iam or so, and no impurity and pore existed in the grain boundary and crystalline while using optimal sintering conditions.

关键词： Yb:YAG MgO transparent ceramics sintering additives valence unvariation

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A Class of New Quadratic Vectorial Bent Functions

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Chinese Journal of Electronics 2020年第5期29卷 873-879页

作者： PANG Tingting ZENG Xiangyong li nian XU Yunge The Faculty of Mathematics and Statistics Hubei Key Laboratory of Applied Mathematics Hubei University

A class of quadratic vectorial bent functions having the form F（x）=Trm~n(ax~(2s1+1))+Tr1~n(bx~(2s2+1)) is investigated,where n,m,s1,s2are positive integers and the coefficients a,b belong to the finite field F2~*** some discussions on the permutation property of certain linearized polynomials over F2~n,several classes of quadratic vectorial bent functions are presented for special cases of n,and it is also verified by computer that some vectorial bent functions proposed are extended affine inequivalent to all known quadratic vectorial bent functions.

关键词： Vectorial bent function Permutation polynomial Extended affine equivalence Finite field

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Recent progress on space-borne microwave sounder pre-launch calibration technologies in China

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Journal of Systems Engineering and Electronics 2008年第4期19卷 643-651,658页

作者： nian feng Yang Yujie Chen Yunmei Xu Dezhong Wang Wei National Key Laboratory of Metrology and Calibration Technology Beijing 100854 P. R. China Beijing Inst. of Radio Metrology & Measurement Beijing 100854 P. R. China

The development processes and the application achievements of space-borne microwave sounder pre-launch calibration technologies in China are introduced briefly. Then, the general project plan for pre-launch calibration, the latest research achievements on the optimization and development of the microwave wide band calibration targets, emissivity measurement technologies and the system level uncertainty analysis of the laboratory, and the thermal/vacuum microwave sounder calibration system for ＂FY-3＂ meteorological satellite are reported, respectively. Finally, the key technological problems of the calibration technologies under researching are analyzed predictively.

关键词： microwave sounder calibration uncertainty remote sensing

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Au/FeO_x-TiO_2 as an efficient catalyst for the selective hydrogenation of phthalic anhydride to phthalide

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Chinese Chemical Letters 2010年第11期21卷 1322-1325页

作者： Ying Xin liu Tie feng Xing Yi Ming Luo Xiao nian li Wei Yan Research and Development Base of Catalytic Hydrogenation Zhejiang University of Technology Hangzhou 310032 China State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology Zhejiang University of Technology Hangzhou 310032 China

Au/FeOx-TiO2,prepared by deposition-precipitation method,is an efficient and stable catalyst for the liquid phase selective hydrogenation of phthalic anhydride to phthalide under mild reaction conditions.

关键词： Au/FeOx-TiO2 catalyst Phthalic anhydride liquid phase hydrogenation Phthalide

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Novel mode-coupling vibrations of AlN thin film bulk acoustic resonator operating with thickness-extensional mode

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Applied Mathematics and Mechanics(English Edition) 2023年第12期44卷 2187-2206页

作者： Zinan ZHAO nian li Yilin QU Weiqiu CHEN Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province and Department of Engineering Mechanics Zhejiang UniversityHangzhou 310027China Huanjiang Laboratory Zhuji 311816Zhejiang ProvinceChina Suzhou HunterSun Electronics Co. Ltd.Suzhou 215124Jiangsu ProvinceChina School of Marine Science and Technology Northwestern Polytechnical UniversityXi’an 710072China

The dispersion curves of bulk waves propagating in both AlN and ZnO film bulk acoustic resonators(FBARs)are presented to illustrate the mode flip of the thickness-extensional(TE)and 2nd thickness-shear(TSh2)*** frequency spectrum quantitative prediction(FSQP)method is used to solve the frequency spectra for predicting the coupling strength among the eigen-modes in AlN and ZnO *** results elaborate that the flip of the TE and TSh2 branches results in novel self-coupling vibration between the small-wavenumber TE and large-wavenumber TE modes,which has never been observed in the ZnO ***,the mode flip leads to the change in the relative positions of the frequency spectral curves about the TE cut-off *** obtained frequency spectra can be used to predict the mode-coupling behaviors of the vibration modes in the AlN *** conclusions drawn from the results can help to distinguish the desirable operation modes of the AlN FBAR with very weak coupling strength from all vibration modes.

关键词： AlN film mode flip frequency spectrum quantitative prediction(FSQP) dispersion curve mode-coupling vibration

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Implementing 1 → M Economical Phase-Covariant Telecloning in Cavity QED

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Communications in Theoretical Physics 2011年第3期55卷 441-444页

作者： XUE li JIANG nian-Quan College of Physics and Electric Information Wenzhou University Wenzhou 325035 China

We propose an experimentally feasible scheme to implement the economical 1 → M phase-covariant telecloning based on cavity QED. By the resonant interaction of the atoms with cavity field of a high-Q cavity and the different coupling strength between atoms and cavity field, the scheme can generate quantum entanglement channel in one step. What is more, the operation time and steps do not increase with the increase of atoms.

关键词： cavity QED phase-covariant telecloning

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