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石煤渣保温砖的导热性能研究

湘潭矿业学院学报 1996年第2期11卷 41-45页

作者：刘小波付勇坚肖秋国 Dep of chemical engineering China

以石煤渣为主要原料研制应用于工业窑炉的保温砖，是石煤渣综合利用的一种新方法。本文通过对石煤渣保温砖导热机理的分析，讨论了保温砖的物相组成、石煤渣及造孔物的掺入量、烧结温度制度等对试样导热系数的影响，分析了试样具有较低... 详细信息

以石煤渣为主要原料研制应用于工业窑炉的保温砖，是石煤渣综合利用的一种新方法。本文通过对石煤渣保温砖导热机理的分析，讨论了保温砖的物相组成、石煤渣及造孔物的掺入量、烧结温度制度等对试样导热系数的影响，分析了试样具有较低导热系数的主要原因。图５，表３，参６。

关键词：石煤渣保温砖导热系数煤渣砖

Measurement of Monomer Reactivity Ratios of D,L-3-Methylglycolide with Glycolide or D,L-Lactide

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Chinese chemical Letters 2000年第9期11卷 815-818页

作者： Chang Ming DONG Kun Yuan QIU Zhong Wei GU Xin De FENG Department of Polymer Science and engineering, College of Chemistry and Molecular engineering, Peking University, Beijing 100871 National research Institute for Family Planning, Beijing 100081 Peking Univ Coll Chem & Mol Engn Dept Polymer Sci & Engn Beijing 100871 Peoples R China Natl Res Inst Family Plannning Beijing 100081 Peoples R China

For monomer reactivity ratios study, the copolymerization of D,L-3-methylglycolide (MG) with glycolide (GA) or D,L-lactide (LA) was carried out in bulk to a certain low conversion in the presence of stannous octoate at 140 degrees C. The copolymer compositions were determined by H-1 NMR spectroscopy. The monomer reactivity ratios were evaluated by Fineman-Ross method, Kelen-Tudos method and linear least-squares method. The monomer reactivity ratios of D,L-3-methylglycolide and glycolide or D,L-lactide are r(mg)= 0.73, r(ga)= 1.47; r(mg)= 1.71, r(la)= 0.92, respectively.

关键词： D,L-3-methylglycolide glycolide D,L-lactide ring-opening copolymerization monomer reactivity ratios

One-dimensional metal phosphonates based on 6-phosphononicotinic acid:A structural and magnetic study

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Science China Chemistry 2010年第10期53卷 2112-2117页

作者： WANG PengFei, DUAN Yan & ZHENG LiMin State Key Laboratory of Coordination Chemistry Coordination Chemistry Institute, School of Chemistry and chemical engineering, Nanjing University, Nanjing 210093, China 1. State Key Laboratory of Coordination Chemistry Coordination Chemistry Institute School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China

The reactions of 6-phosphononicotinic acid (pnaH3) and metal salts result in three new compounds, namely, M(pnaH)-(H2O)3·H2O [M = Co(Ⅱ) (1), Ni(Ⅱ) (2), Zn(Ⅱ) (3)]. These compounds are isostructural and contain 21 helical chains made up of corner-sharing {MO5N} octahedra and {PO3C} tetrahedra. The chains are further connected by extensive hydrogen bonds to form a three-dimensional supramolecular structure. Magnetic studies reveal that dominant antiferromagnetic interactions are mediated in both 1 and 2. Interestingly the dehydrated compound 1 shows metamagnetic behavior at low temperature.

关键词： carboxylate-phosphonate coordination polymer magnetic property metamagnetism

Simulation of Thermodynamics and Kinetics for KR Desulphurization

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Journal of Iron and Steel research International 2011年第S2期18卷 98-106页

作者： XU An-jun1, ZHANG Mao-lin2, ZHANG Hui-ning1, LI An-dong3 (1. School of Metallurgical and Ecological engineering, University of Science and Technology Beijing, Beijing 100083,China 2. Steel-Making and Continuous Casting engineering Institute, Capital engineering and research Incorporation Limited, Beijing 100176,China 3. Stainless Steel Company, Baosteel group, Shanghai 201900,China) Univ Sci & Technol Beijing Sch Met & Ecol Engn Beijing 100083 Peoples R China Capital Engn & Res Inc Ltd Steel Making & Continuous Casting Engn Inst Beijing 100176 Peoples R China Stainless Steel Co Baosteel Grp Shanghai 201900 Peoples R China

This paper seeks to optimize parameters, reduce the cost of desulphurization and the consumption of operation about KR pretreatment of hot metal at the Stainless Steel Company, Baosteel group. Based on the theoretical analysis of physical chemistry in metallurgy, simulation experiments of the KR desulphurization of hot metal were conducted in a laboratory and the composition of the desulphurization was optimized, by means of chemical analysis, DSC, SEM and EDS. The water modeling displays the fluid flow characteristics of KR desulphurization. Combination of the techniques and production at the Stainless Steel Company, Baosteel group, the optimized parameters of the process are put forward.

关键词： desulphurization of hot metal KR, desulphurization thermodynamics water model

SYNTHESIS AND CHARACTERIZATION OF A NOVEL BLUE LIGHT EMITTING ROD-COIL DIBLOCK OLIGOMER

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Chinese Journal of Polymer Science 2002年第5期20卷 401-407页

作者： Lifang Yang Haifeng He Hongqing Cao Xinhua Wan Qi-feng Zhou Department of Polymer Science & engineering College of Chemistry & Molecular engineering Peking University Beijing 100871, China Peking Univ Coll Chem & Mol Engn Dept Polymer Sci & Engn Beijing 100871 Peoples R China

Four new rod-coil diblock molecules, which had well-defined para-phenylene oligomers (PPP, from biphenyl to quinquephenyl) as rigid segments and poly(ethylene oxide) (PEO, M-w ca. 750) as flexible segments, were synthesized. The chemical structure and the number of repeating unit in PEO coil and PPP rod were characterized by H-1-NMR and MALDI-TOF mass spectrometry. The diblock oligomers showed good solubility in common organic solvents and aggregated in water as characterized by a blue shift in UV-vis absorption spectra, a red shift in emission spectra, quenching of the fluorescence and formation of the microfibrilla and fractal-like structures. The formation of different supramolecular structures meant that this effort might lead to commercial important highly organized functional materials.

关键词： rod-coil diblock oligomer MALDI-TOF mass spectrometry microfibrilla aggregate fractal-like pattern

Synthesis, Crystal Structure and Properties of Complex VO(C10H9NO3)(C13H10NO2)

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chemical research in Chinese Universities 2005年第1期21卷 104-108页

作者： MA Dong-sheng, GAO Shan **, HUO Li-hua, GAO Jin-sheng and ZHAO Jin-gui College of Chemistry and chemical engineering, Heilongjiang University, Harbin 150080, P. R. China College of Chemistry and chemical engineering Heilongjiang University Harbin 150080

Complex VO(C 10H 9NO 3)(C 13H 10NO 2)(C 10H 9NO 2- 3=N-salicylidene-L-alaninate, C 13H 10NO- 2=N-phenylbenzohydroxamate) was synthesized and characterized by means of elemental analysis, IR, UV, 1H NMR spectroscopies, cyclic voltammetry and single crystal X-ray diffraction. The complex crystallized in a monoclinic system with space group P2 1 and crystal cell parameters a=0.9720(1) nm, b=1.8274(2) nm, c=1.2542(1) nm, β=104.868(9)°, V=2.1532(4) nm3, M r=470.34, Z=2. The two oxygen atoms and the one nitrogen atom of the tridentate Schiff base ligand and the one oxime oxygen atom of the hydroxamate ligand coordinate to the vanadium atom, forming an equatorial plane, the two axial positions are respectively occupied by the oxygen atom of the oxovanadium and the carbonyl oxygen atom of the hydroxamate and the vanadium atom exhibits a distorted octahedral VO(ONO)(OO) coordination sphere. The 1H NMR spectrum suggests that the two isomers, endo and exo in a molar ratio of 1/1.7, coexist in the solution of the title complex in CDCl 3. There exists a quasi-reversible one-electron redox reaction corresponding to VⅤ/VⅥ couple in the three non-aqueous solvents, and the redox potential E 1/2 of the title complex substantially shifts in the direction of the positive voltage increase in the order: CH 2Cl 2

关键词： Oxovanadium complex Hydroxamate complex Crystal structure Spectral property

SOLUTION CRYSTALLIZATION OF METALLOCENE SHORT CHAIN BRANCHED POLYETHYLENE:MORPHOLOGY AND MECHANISM

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Chinese Journal of Polymer Science 2000年第1期18卷 45-49页

作者： Qiang Fu Rong-ni Du Fang-Chyou Chiu Department of Polymer Science & Materials, Sichuan University, Chengdu, Sichuan 610065, China Department of chemical engineering, Chang Gong University, Taoyun, Taiwan, China Sichuan Univ Dept Polymer Sci & Mat Chengdu 610065 Sichuan Peoples R China Chang Gong Univ Dept Chem Engn Tao Yuan Taiwan

Solution crystallization of metallocene short chain branched polyethylene (SCBPE) was carried out and very nice single crystals were obtained. Compared with single crystals grown from linear polyethylene, SCBPE single crystals are dirty due to intermolecular heterogeneity The crystal morphology changes with crystallization temperatures. Lozenge, truncated lozenge, hexagonal, rounded and elongated crystal morphologies have been found at much lower crystallization temperature than in linear polyethylene. The electron diffraction shows there is a possibility that the single crystals may have hexagonal packing in a crystallization temperature range. The lateral habits of single crystal are discussed based on roughening theories.

关键词： metallocene SCBPE single crystal roughening face growth mechanism

ADSORPTION OF LATERALLY INTERACTING 1-NAPHTHOL/1-NAPHTHYL-AMINE MIXTURES ON NONPOLAR SURFACES FROM AQUEOUS SOLUTIONS

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Chinese Journal of Polymer Science 2006年第1期24卷 73-80页

作者： Wei-ming Zhang Jin-long Chen Qun Chen Ming-yang He Bing-cai Pan and Quan-xing Zhang a State Key Laboratory of Pollution Control and Resources Reuse,School of the Environment,Nanjing University,Nanjing 210093,China b research Center for engineering Technology of Organic Poison Control and Resources Reuse in Jiangsu Province,Nanjing 210038,China c Department of chemical engineering,Jiangsu Polytechnic,Changzhou 213016,China Nanjing Univ Sch Environm State Key Lab Pollut Control & Resources Reuse Nanjing 210093 Peoples R China Res Ctr Engn Technol Organ Poison Control & Resou Nanjing 210038 Peoples R China Jiangsu Polytech Dept Chem Engn Changzhou 213016 Peoples R China

The binary adsorption behavior of 1-naphthol/1-naphthylamine mixtures in water on nonpolar adsorbent Amberlite XAD4 was investigated at 293 K, 303 K and 313 K, respectively. The experimental uptakes of 1-naphthol and 1-naphthylamine in all binary-component systems of different molar ratios were obviously higher than the corresponding uptakes predicted by the extended Langmuir model, assuming no interaction between the adsorbed molecules of the two components. This phenomenon was attributed to the cooperative adsorption effect arising from the hydrogen bonding interaction between 1-naphthol and 1-naphthylamine molecules. A modified extended Langmuir model was proposed to describe the binary adsorption behavior by means of introducing a fitting parameter related with the cooperative adsorption effect of the adsorbates.

关键词： Modified model 1-Naphthol 1-Naphthylamine Adsorbate-adsorbate interaction Cooperative effect.

Derivation of Martin-Hou Equation of State from Hard-particle Perturbation Theory

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chemical research in Chinese Universities 2000年第1期16卷 49-56页

作者： ZHANG Bing-jian (Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China) HOU Yu-chun (Department of chemical engineering, Zhejiang University, Hangzhou 310027, P. R. China) Zhejiang Univ Dept Chem Hangzhou 310027 Peoples R China Zhejiang Univ Dept Chem Engn Hangzhou 310027 Peoples R China

In this paper, the Martin-Hou equation of state is derived by using a power series representation of radial distribution function and an analytic representation of multi-section potential based on the Barker-Henderson hard-particle perturbation theory including high-order terms. In the derivation, a theoretical form of Martin-Hou equation was obtained. It had a similar form and the same capability to predict P-V-T properties as the Martin-Hou equation and no additional data were required for evaluating the constants. The characteristic constants of the theoretical expression have certain relationships with the molecular parameters.

关键词： Perturbation theory Martin-Hou equation of state Theoretical expression P-V-T properties Molecular parameter