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Adsorption of surfactants onto acrylic ester resins with different pore size distribution

Science china Chemistry 2006年第5期49卷 445-453页

作者： YANG Weiben1,2,3,LI Aimin1,3,CAI Jianguo1,3,MENG Guanhua1,3 & ZHANG Quanxing1,3 1. State Key Laboratory of Pollution Control and Resource Reuse,school of the environment,Nanjing university,Nanjing 210093,china 2. Nanjing College of chemical technology,Nanjing 210048,china 3. Jiangsu engineering & technology Research Center for Organic Toxicant Control and Resource Reuse,Nanjing 210038,china State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing China Nanjing College of chemical technology Nanjing China Jiangsu engineering & technology Research Center for Organic Toxicant Control and Resource Reuse Nanjing China

In this study, a series of acrylic ester resins with different pore size distribution were prepared successfully by varying the type and the amount of pore-forming agents. In order to inves-tigate the adsorption behavior and mechanism of surfactants on acrylic ester resins, three kinds of surfactants were utilized as adsorbates that were sodium 6-dodecyl benzenesulfonate (6-NaDBS), sodium 1-dodecyl benzene sulfonate (1-NaDBS) and sodium 1-dodecyl sulfonate, respectively. It was observed that the surface area was available in a particular pore size and an appropriate pore size of resins appeared to be more important for the adsorption of surfactants. As compared to commercial acrylic ester resins XAD-7 and HP2MG, 50# and 38# resins exhibited more excellent adsorption properties toward 1-NaDBS and 6-NaDBS. The experimental equilibrium data were fitted to the Langmuir, and double-Langmuir models. Two models provided very good fittings for all resins over the temperature range studied. The investigation indicated that electrostatic attraction and hydrogen bond between resins and surfactants were the main forces and had an obvious effect on adsorption proc-ess.

关键词： acrylic ester resin, surfactant, adsorption, pore size distribution, isotherm.

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Characterzation and separation of Al_(13) species using gel-filtration chromatography

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Science china Chemistry 2006年第4期49卷 326-331页

作者： CHU Yongbao1,2, GAO Baoyu1, YUE Qinyan1, WANG Yan1 & WANG Shuguang1 1. school of environmental Science and engineering, Shandong university, Jinan 250100, china 2. College of Material and environment, Qingdao university of Science and technology, Qingdao 266042, china school of environmental Science and engineering Shandong University Jinan China College of Material and environment Qingdao University of Science and Technology Qingdao China

A polyaluminum chloride (PAC) sample was prepared using a slow alkalinetitration method. The Bio-Gel P-100 gel column chromatographic technique was used to separate andcharacterize the various forms of aluminum present in the prepared PAC solution. The effluents froma gel column were monitored using online chemical method: AI-Ferron timed complexationspectropho-tometry and by ^(27)Al nuclear magnetic resonance (NMR) spectroscopy. Effects ofdifferent experimental conditions such as eluent flow rate, ionic strength and pH on separation ofAl_(13) were investigated. Experimental results indicated that molecule size exclusion was not theonly parameter affecting the column chromatographic separation efficiency of Al_(13) but moleculecharge as well. Reducing the eluent flow rate, increasing the ionic strength and suitable pHresulted in increase in the separation efficiency. Experimental results clearly indicated that byvarying the experimental conditions, it is possible to produce pure Al_(13) species using a gelcolumn chromatographic technique.

关键词： Al13 species, column chromatography, polyaluminum chloride (PAC), separation and purification.

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Corrosion science general-purpose data model and interface (I): Meanings and issues of design and implementation

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Science china(Technological Sciences) 2008年第9期51卷 1394-1401页

作者： TANG ZiLong school of Materials Science and engineering, Tianjin university, Tianjin 300072, china school of Materials Science and engineering Tianjin University Tianjin China

A brand new design of integrated corrosion information system is introduced to meet the constantly increasing demands of material corrosion information. Two concepts, "general-purpose corrosion data model" and "public corrosion data ex-changing interface", are suggested to integrate a wide variety of corrosion data sources based on detailed analysis on characteristics of each source in order to promote the information sharing and data mining. The architecture of integrated corrosion information environment is blueprinted. The insight analysis is focused on 1) architecture of the system; 2) data flow and information sharing; 3) roles of system players and their interactions; 4) approaches to data integration. Several key issues are addressed in detail including coverage of data model, data source integration and mitigation, and data granularity from system performance and model acceptance points of view. At the end, the design and implementation ap-proach of general corrosion data model is presented based on cutting edge IT techniques.

关键词： corrosion multi-source data modeling integrated information system

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INTERACTION MECHANISM OF AMPHOTERIC COLLECTOR-I WITH METALLIC IONS AND MINERALS

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Chinese chemical Letters 1991年第5期2卷 403-404页

作者： Xu Xin SHAO Meng Xiong GUO beijing Graduate school, china university of mining and technology beijing 100083 K.Z. LIAO Department of Chemistry, Tsinghua university, beijing 100084

The electronic structure and bonding nature of adsorbing bonding complexes which consist of Amphoteric Collector-I and Mg^(2+), Ca^(2+), MgPO_4^-, CaPO_^-4, CaCO_3, as well aa MgCO_3, are studied using quantum chemistry CNDO/2, It is predicted that magnesium salts are more liable to form adsorbing chelates with Amphoteric Collector-I than calcium salts, and all results coincide with that obtained in flotation.

关键词： mode In INTERACTION MECHANISM OF AMPHOTERIC COLLECTOR-I WITH METALLIC IONS AND MINERALS

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Surface Modification of Silk Fibroin Films with Zwitterionic Phosphobetaine to Improve the Hemocompatibility

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Journal of Wuhan university of technology(Materials Science) 2010年第6期25卷 969-974页

作者：蒋雪峰陈强 school of Chemistry and chemical engineering Nanjing University

Zwitterionic phosphobetaine bearing a hydroxyl and a zwitterionic group,8-hydroxy-2-octyl phosphorylcholine（HOPC）,was synthesized and constructed to the surface of silk fibroin（SF） films in order to improve the hemocompatibility of fibroin films by a an isocyanate head *** surface characteristics of the modified films were measured by attenuated total reflection Fourier transform infrared spectroscopy（ATR-FTIR） and electron spectroscopy for chemical analysis（ESCA）,displaying the successful immobilization of Zwitterionic phosphobetaine on the surface of these fibroin ***,the further platelet adhesion test in platelets rich plasma（PRP） of human beings showed the zwitterionic phosphobetaine led mainly to good *** experimental results indicated a reasonable approach to improve the blood compatibility of fibroin films.

关键词： zwitterionic phosphobetaine silk fibroin blood compatibility platelet adhesion

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氯化铜-四氯乙烯复合脱除煤中有机硫的研究

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燃料化学学报 2003年第5期31卷 390-394页

作者：赵炜朱红闫学海中国矿业大学化工学院江苏徐州221008 北方交通大学理学院北京100044

通过正交实验确定了用氯化铜四氯乙烯复合脱除煤中有机硫的最佳条件,研究了脱硫条件对有机硫脱除率的影响,考察了使用复合法脱硫对煤质的影响。研究结果表明:用氯化铜四氯乙烯复合脱除煤中有机硫效果较好,反应条件温和;最佳脱硫条件是... 详细信息

通过正交实验确定了用氯化铜四氯乙烯复合脱除煤中有机硫的最佳条件,研究了脱硫条件对有机硫脱除率的影响,考察了使用复合法脱硫对煤质的影响。研究结果表明:用氯化铜四氯乙烯复合脱除煤中有机硫效果较好,反应条件温和;最佳脱硫条件是:用四氯乙烯为有机溶剂,煤的粒度为0 076mm,反应时间为120min,反应温度为120℃,煤浆浓度为0.067g mL,在此条件下,脱硫率最高达43%;有机硫脱除率随着煤的粒度的减小而增大,随着反应时间、反应温度、煤浆浓度的增加先增大,达到一定程度后,其变化不再明显,甚至降低;脱硫后,煤的结构基本未发生变化,发热量损失较少。

关键词：煤有机硫脱硫率氯化铜四氯乙烯

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Strategic Thinking for Sustainable Development of mining-Based Cities in china

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Chinese Journal of Population,Resources and environment 2004年第3期2卷 60-63页

作者： Xie Shouxiang, Dai Xichao & Wang Yafen school of Management, china university of mining & technology, Xuzhou 221008, china school of Management China University of Mining and Technology Xuzhou 221008 China

Cities based on mining are distinctive from other cities in china. Their heavy dependence on minerals, a relatively undiversified industrial structure, seriously damaged ecological environment and the rather low degree of openness have all reduced their competitiveness, and severely constrained and hindered their sustainable development. In this paper the authors will study mining-based cities from the perspective of sustainable development, first by having a critical review of their features, and then by researching into strategic options to support their sustainable development.

关键词： mining-based cities growth strategy utilization of resources

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Experimental study on denitrification efficiency impacted by activated sludge filtering bed formed in gas,liquid-solid separating zone

Experimental study on denitrification efficiency impacted by...

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The International Conference on Advances in chemical Technologies for Water and Wastewater Treatment

作者： Heli WANG~1 Li CHENG~2 Nan JIANG~1 ~1 school of Water resources and environment,china university of Geosciences,beijing,100083,china ~2 College of Resource and Safety engineering,china university of mining and technology,beijing,100083,china

The experimental study on denitrificaiton of nitrogenous organic wastewater using the co-processes of bio-fluidized bed plus activated sludge filter bed which formed in gas-liquid-solid separating zone was carried *** results showed that:1)Non-suppressed nitrification bacteria group by carbon sources was reproduced in the Bio-fluidized bed system,which in turn contributed to the NH-N removal efficiency of up to 93%-95%;2)Dynamic and stable sludge filter was formed in the gas-liquid-solid separating zone by the setting of incline-tube and the controlling of precipitation mud condition,which leaded to the dramatically improving of TN removal rate;3)85% BOD removal efficiency and 74% TN removal efficiency was achieved under the operation conditions of HRT of 1.5h, aeration of 0.25 m h,BOD load of 9.2～10.4 mdand TN load of 0.65 kgmd.

关键词： nitrogenous organic wastewater bio-fluidized bed sludge filter bed biological denitrification

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Biomimetic preparation of elastomeric fibers with micro/nano structures on the surfaces

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Progress in Natural Science:Materials International 2012年第5期22卷 493-501页

作者： Quanyong Liu a,Liqun Zhang c,Lei Jiang a,b a Key Laboratory of Bio-Inspired Smart Interfacial Science and technology of Ministry of Education,school of Chemistry and environment,Beihang university,beijing 100191,PR china b beijing National Laboratory for Molecular Sciences(MNLMS),Key Laboratory of Organic Solids,Institute of Chemistry,Chinese Academy of Sciences,beijing 100190,PR china c State Key Laboratory of Organic-Inorganic Composites,beijing university of chemical technology,beijing 100029,PR china Key Laboratory of Bio-Inspired Smart Interfacial Science and technology of Ministry of Education School of Chemistry and Environment Beihang University Beijing 100191 PR China State Key Laboratory of Organic–Inorganic Composites Beijing University of Chemical Technology Beijing 100029 PR China beijing National Laboratory for Molecular Sciences (MNLMS) Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 PR China

Bioinspired by the spinning of spider silks,the biomimetic preparation of elastomeric fibers with micro/nano structures on the surfaces was attempted,and as a result,three types of ultrafine fullvulcanized powdered nitrile-butadiene rubber(UFPNBR)/thermoplastic polyurethane(TPU) fibers were *** first fiber was only decorated by the micron-sized grooves on the surface,and the second fiber was dotted by both the micron-sized grooves and nanometer-sized spheres on the surface,while the third fiber was helical and with a concave-convex *** biomimetic preparation mainly consisted of four steps,and the formation mechanism was described as an integrated mechanism of diffusion,coagulation,self assembly,and microphase *** micro/nano structures on the fibers were controlled by changing the mass ratio of UFPNBR to TPU and environment of vertical *** UFPNBR/TPU elastomeric fibers were hoped to have an integrated function of superhydrophobicity,self cleaning,and mechanical improvement of toughness or strength.

关键词： Biomimetic preparation Elastomeric fiber Micro/nano structure Self assembly Spider silk

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活性炭硝酸表面改性对催化剂分散度的影响(英文)

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新型炭材料 2003年第3期18卷 203-208页

作者：解强张香兰陈清如宫国卓中国矿业大学(北京校区)化学与环境工程学院北京100083 中国矿业大学化工学院江苏徐州221008

　无论是活性炭作为催化剂载体还是在活性炭本身的催化制备过程中,催化剂在活性炭或活性炭前体上的高度分散都是至关重要的。通过X射线能谱(EDX)和扫描电子显微镜(SEM)技术直接观察、研究了活性炭表面经硝酸氧化改性对硝酸铜在煤基活性... 详细信息

　无论是活性炭作为催化剂载体还是在活性炭本身的催化制备过程中,催化剂在活性炭或活性炭前体上的高度分散都是至关重要的。通过X射线能谱(EDX)和扫描电子显微镜(SEM)技术直接观察、研究了活性炭表面经硝酸氧化改性对硝酸铜在煤基活性炭中分散度的影响。此外,将经硝酸表面改性的商品活性炭采用浸渍法负载上硝酸铜催化剂,再经水蒸气二次活化制备了一种新的活性炭。结果表明,硝酸处理造成活性炭吸附性能的下降,并且硝酸处理的强度越高,活性炭吸附性能的下降程度越大。然而,对硝酸处理的活性炭经简单的水洗可恢复其吸附性能。研究结果还表明,活性炭经硝酸氧化提高了炭表面含氧官能团的数量,使催化剂在活性炭的内外表面均能均匀分布,提高了催化剂的分散度和抗烧结能力。活性炭经硝酸改性后再负载硝酸铜进行二次活化制备高性能活性炭,可使硝酸铜的催化性能得到进一步的提升。

关键词：活性炭硝酸表面改性催化剂分散度催化剂载体

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