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Nano Materials Science 2024年第4期6卷 413-418页

作者： Jieli Chen Xiaodong Shi Suyang Feng Jing Li Xiaohong Gao Xiao Wu Ke Li Anyuan Qi Chenghang You Xinlong Tian School of Marine Science and Engineering School of Chemical Engineering and TechnologyHainan UniversityHaikou570228PR China National Energy group Ledong Power Generation co. LtdLedong572539PR China

High-efficiency seawater electrolysis is impeded by the low activity and low durability of oxygen evolution catalysts due to the co.plex co.position and co.petitive side reactions in ***,a heterogeneousstructured catalyst is co.structed by depositing NiFe-layered double hydroxides(NiFe-LDH)on the substrate of MXene(V_(2)CT_(x))modified Ni foam(NF),and abbreviated as NiFe-LDH/V_(2)CT_(x)/*** demonstrated,owing to the intrinsic negative charge characteristic of V_(2)CT_(x),chlorine ions are denied entry to the interface between NiFeLDH and V_(2)CT_(x)/NF substrate,thus endowing NiFe-LDH/V_(2)CT_(x)/NF catalyst with high co.rosion resistance and durable stability for 110 h at 500 mA cm^(-2).Meanwhile,the two-dimensional structure and high electrical co.ductivity of V_(2)CT_(x) can respectively enlarge the electrochemical active surface area and guarantee fast charge transfer,thereby synergistically promoting the catalytic performance of NiFe-LDH/V_(2)CT_(x)/NF in both deionized water electrolyte(261 m V at 100 m A cm^(-2))and simulated seawater electrolyte(241 mV at 100 mA cm^(-2)).This work can guide the preparation of oxygen evolution catalysts and accelerate the industrialization of seawater electrolysis.

关键词： NiFe-LDH/V_(2)CT_(x)/NF catalyst Oxygen evolution reaction Seawater electrolysis Chlorine inhibition

Causes of surface stripe cracks of Ti–4Al–2V alloy co.d-rolled sheet

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Rare Metals 2014年第5期33卷 522-526页

作者： De-Ming Huang Xiong-Fei Yang Qing-Feng Wei Yong Chen Hua Guo Sheng-Long Liang Ying Wang Pangang group Research Institute co. Ltd. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization

The stripe cracks which formed along rolling direction on the surface of Ti–4Al–2V alloy co.d-rolled sheet were observed by stereosco.e, scanning electron microsco.e（SEM）, and energy-dispersive spectrometer（EDS）. Morphology analysis indicates that cracks are dominantly in zigzag shape, with 10–30 mm in length and less than 10 lm in depth, and there is no evidence of crack tips. chemical co.position analysis shows that crack regions feather high oxygen co.centration while smooth surface is at normal oxygen level. It is obvious that the occurrence of strip cracks is mainly related to residual oxide on the surface of Ti–4Al–2V alloy co.d-rolled sheet.

关键词： Ti-4Al-2V co.d-rolled sheet Surface Stripe cracks

Preparation of metal organic framework film on surface of aluminum profile and properties of fluorocarbon powder co.ting

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Rare Metals 2023年第1期42卷 70-75页

作者： Xue-Long Hao Kai Zhang Wen Ma Dong-Hui Zhang Lu Lu National Center of Analysis and Testing for Nonferrous Metals and Electronic Materials General Research Institute for Nonferrous MetalsBeijing100088China Guobiao(Beijing)Testing&Certification co. LtdBeijing101407China China United Testing&Certification co. LtdBeijing101407China Guangdong Provincial Academy of Building Research group co. Ltd.Guangdong510500China Youke Publishing co. LtdGrinm Group Co.LtdBeijing100088China

The chemical pretreatment film on the surface of aluminum profile,the type of fluorocarbon powder and the co.patibility between them are the co.mon key problems in the industry of using"powder"instead of"paint"to solve the volatile organic co.pounds(VOCs)and related organic wastewater discharge in the co.ting *** this study,a new type of pretreatment film was prepared on the surface of aluminum *** was found that the prepared pretreatment film had a three-dimensional framework s tructure,and the organic matter and titanium salt were co.nected by the introduction of divalent metal ions to form a metal skeleton film.

关键词： co.ting film powder

A New Norditerpene from Miliusa balansae Finet et Gagnep

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Chinese chemical Letters 2001年第3期12卷 247-248页

作者： Rui WU Qi YE Neng Yu CHEN Guo Lin ZHANG Chengdu Institute of Biology the Chinese Academy of SciencesChengdu 610041 Department of Chemistry and chemical Industry Lanzhou UniversityLanzhou 730000 Technical Centre Hua Sheng Group Co.LtdChengdu 610075

A novel norditerpene, miliusate (1), was isolated from Miliusa balansae et Gagnep. Its structure was elucidated by spectral analysis.

关键词： Millusa balansae Finet et Gagnep miliusate

Gas drainage efficiency improvement by increasing co.lbed permeability using waterjet cutting system

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Journal of co.l Science & Engineering(China) 2010年第2期16卷 150-156页

作者： LU Ting-kan ZHOU Ting-yang YU Hong School of Energy Science and Engineering Henan Polytechnic University Jiaozuo 454000 China Rujigou co.liery Shenhua Ningxia Coal Group Shizuishan 750000 China Jiaozuo co.l Industry group co. Ltd. Henan Coal and Chemical Industry Group Co. Ltd. Jiaozuo 454000 China

This paper presented a method to create artificial fractures along the existing gas drainage borehole and increase the permeability of the co.lbed using a high pressure waterjet cutting *** field work co.ducted in Rujigou co.liery, Shenhua Ningxia co.l group demonstrate that the co.lbed permeability is increased, and acco.dingly, gas drainage efficiency is improved up to 3 to 6 times over the traditional methods using high pressure waterjet ***, based on the monitoring data, the co.ceptual model for gas drainage process associated with different mining activities has been proposed, and few major advantages using waterjet assistance method have been identified.

关键词： permeability co.lbed gas drainage waterjet Iongwalling

Synthesis,Crystal Structure and Antibacterial Activity of(E)-N^1,N^4-Bis(2,3,4-trimethoxy-6-methylbenzylidene)butane-1,4-diamine

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Chinese Journal of Structural Chemistry 2009年第5期28卷 628-630页

作者：梁足培李建孔凡亭林翠花台西市 Department of Chemistry and chemical Engineering Weifang UniversityWeifang 261061 China Jinan chemical Fertilizer Plant co. LtdJinan 250101 China

The title co.pound （E）-N1,N4-bis（2,3,4-trimethoxy-6-methylbenzylidene） butane- 1,4- diamine （C26H36N2O6, Mr = 472.57） was synthesized and characterized by elemental analysis, IR spectra and single-crystal X-ray diffraction. The crystal belongs to triclinic, space group C2/c with a = 36.102（4）, b = 5.6620（11）, c = 13.015（2）A,β = 105.491 （2）°, V = 2563.7（7）A3, Z = 4, Dc = 1.224 g/cm3, 2 = 0.71073 A,μ（MoKα） = 0.087 mm^-1, F（000） = 1016, the final R = 0.0456 and wR = 0.1257 for 2255 observed reflections with I 〉 2σ（I）. X-ray diffraction analysis reveals that the molecule adopts an E co.figuration about the central C=N functional bond. The phenyl rings of two 2,3,4-trimethoxy-6-methylbenzaldehyde groups are parallel by symmetry. The molecules are linked through π-π and C-H…π stacking interactions and C-H…O hydrogen bonding interactions. The title co.pound possesses moderate antibacterial activity.

关键词： synthesis crystal structure antibacterial activity

Optimization of methane co.version to liquid fuels over W-Cu/ZSM-5 catalysts by response surface methodology

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Journal of Natural Gas Chemistry 2008年第1期17卷 39-44页

作者： Didi Dwi Anggoro Istadi chemical Reaction Engineering and Catalysis group Department of Chemical EngineeringUniversity of DiponegoroTembalangSemarang 50239Indonesia

The co.version of methane to liquid fuels is still in the development process. The modified HZSM-5 by loading with Tungsten （W） enhanced its heat resistant performance, and the high reaction temperature （800℃） did not lead to the loss of W co.ponent by sublimation. The loading of ZSM-5 with Tungsten and co.per （Cu） resulted in an increment in the methane co.version, co., and C5＋ selectivities. The high methane co.version and C5＋ selectivity, and low H2O selectivity are obtained by using W/3.0Cu/ZSM-5. The optimization of methane co.version over 3.0 W/3.0Cu/ZSM-5 under different temperature and oxygen co.centration using response surface methodology （RSM） are studied. The optimum point for methane co.version is 19% when temperature is 753 ℃, and oxygen co.centration is 12%. The highest C5＋ selectivity is 27% when temperature is 751 ℃. and oxwen co.centration is 11%.

关键词： methane W-Cu/ZSM-5 liquid hydrocarbons response surface methodology

Flocculation co.trol study based on fractal theory

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2005年第10期6卷 1038-1044页

作者：常颖刘前军张金松 Guangzhou Water Supply co. Guangzhou 510160 China Zhejiang Urban and Rural Planning Design Institute Hangzhou 310007 China Shenzhen Water (group) co. Limited Shenzhen 518031 China

A study on flocculation co.trol based on fractal theory was carried out. Optimization test of chemical co.gulant dosage co.firmed that the fractal dimension co.ld reflect the flocculation degree and settling characteristics of aggregates and the good co.relation with the turbidity of settled effluent. So that the fractal dimension can be used as the major parameter for floc-culation system co.trol and achieve self-acting adjustment of chemical co.gulant dosage. The fractal dimension flocculation co.trol system was used for further study carried out on the effects of various flocculation parameters, among which are the dependency relationship among aggregates fractal dimension, chemical co.gulant dosage, and turbidity of settled effluent under the co.ditions of variable water quality and quantity. And basic experimental data were obtained for establishing the chemical co.gulant dosage co.trol model mainly based on aggregates fractal dimension.

关键词： Aggregates, Flocculation co.trol, Fractal dimension, Image analysis, Turbidity

Fault detection of large-scale process co.trol system with higher-order statistical and interpretative structural model

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Chinese Journal of chemical Engineering 2015年第1期23卷 146-153页

作者：耿志强杨科韩永明顾祥柏 co.lege of Information Science and Technology Beijing University of Chemical Technology Sinopec Engineering (group) co. Ltd.

Nonlinear characteristic fault detection and diagnosis method based on higher-order statistical(HOS) is an effective data-driven method, but the calculation co.ts much for a large-scale process co.trol system. An HOS-ISM fault diagnosis framework co.bining interpretative structural model(ISM) and HOS is proposed:(1) the adjacency matrix is determined by partial co.relation co.fficient;(2) the modified adjacency matrix is defined by directed graph with prior knowledge of process piping and instrument diagram;(3) interpretative structural for large-scale process co.trol system is built by this ISM method; and(4) non-Gaussianity index, nonlinearity index, and total nonlinearity index are calculated dynamically based on interpretative structural to effectively eliminate uncertainty of the nonlinear characteristic diagnostic method with reasonable sampling period and data window. The proposed HOS-ISM fault diagnosis framework is verified by the Tennessee Eastman process and presents improvement for highly non-linear characteristic for selected fault cases.

关键词： High order statistics Nonlinear characteristics diagnosis Interpretative structural model TE process

Development and Application of a High-Volume Recycled Powder Solidifying Material for Waterworks Sludge

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Journal of Renewable Materials 2022年第4期10卷 939-953页

作者： Xiang Deng Sudong Hua Fan Xia Yanfang Zhang Dapeng Guo Xinxing Zhu Defei Zhu co.lege of Materials Science and Engineering Nanjing Tech UniversityNanjing211816China China co.struction Installation group Nanjing co.struction co. Ltd.Nanjing210023China Nanjing Pukou Urban and Rural co.struction group co. Ltd.Nanjing211800China

Recycled powder(RP)is produced as a by-product during the process of recycling co.struction and demolition(C&D)wastes,presenting a low additional *** RP-based solidifying material can not only improve its utilization efficiency,but also reduce the co.t of co.mercial solidifying *** date,this is the best solidifying material utilized to dispose the original waterworks sludge(OWS)with high moisture co.tents(60%),and the product co.ld be used to fabricate non-fired *** has beco.e a new environment-friendly technology of“using waste to treat waste”.In this paper,the influence of different particle sizes and dosages of RP on the prepared solidifying material was ***,unco.fined co.pression strength(UCS),volume stability,chemical co.position,and heat of hydration,pore structure of the solidifying material were ***,non-fired bricks were prepared by using the solidifying material,recycled aggregate,and original waterworks *** UCS and softing co.fficient(SC)of the non-fired bricks were *** a result,the 28-day UCS of the solidifying material with optimal(M30)was 35.40 MPa,which co.ld reach 84.37%of Portland cement(PC).The addition of RP increased the volume stability of the solidifying *** addition of a large amount of RP reduced the heat flux and cumulative heat release of the solidifying material,while its porosity *** UCS of non-fired brick(NF20)in 28 days was 15.19 MPa and the SC after 28 days was 78.35%.In co.clusion,the preparation of solidifying material using RP co.ld be a promising approach and has a great potential in disposal of original waterworks sludge.

关键词： Recycled powder solidifying material original waterworks sludge non-fired brick unco.fined co.pressive strength