关键词：全球；特种化学品；市值

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介绍了苯、甲苯、二甲苯为主的芳烃类化工产品2013年的市场供需情况，分析了影响芳烃类化工产品市场和价格的影响因素，对2014年市场发展进行了展望，认为芳烃市场在2013年价格下降、利润萎缩、去库存进入长周期主基调下，2014年随着中国进入经济温和转型期，国内芳烃市场仍存在上涨可能，但涨势将相对放缓。

关键词：芳烃；苯；甲苯；二甲苯；市场分析

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Nanoimprint lithography is conventionally used to transfer a pattern from a mold to a deformable and curable resist layer. Here we report a nanoimprinting technique to selectively transfer components of a pre- assembled nanostructure to a new substrate, while retaining the advantages of nanoimprint lithography such as low cost and high throughput. We use this technique to study metal particle roughness in Au ?nanofinger? substrates, along with the effects of annealing to reduce roughness, and the impact of annealing on the Surface Enhanced Raman Scattering (SERS) signal. The nanofinger substrates consist of Au-coated polymer pillars arranged to collapse into a designed assembly. Upon exposure to a volatile liquid and subsequent drying, microcapillary forces pull the pillars and their metal caps together into the designed structure. Successful transfer was achieved using the concept of template stripping via cold welding using a normal nanoimprinting process with no resist layer but under appropriate pressure to ensure even and complete transfer of all the nanostructures. Particle roughness was not found to be a significant factor in SERS from naonfinger substrates as annealing did not increase the observed Raman intensity.

关键词：纳米压印光刻；纳米加工；等离子体；感应；表面增强拉曼光谱

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关键词：石化项目；精细化

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Halal is a term often linked with foods permissible under Islamic dietary guidelines. However, it is becoming more widely used in the Cosmetics industry. If a product is Halal approved, it does not contain alcohol, is not tested on animals, and does not contain animal ingredients such as collagen, hyaluronic acid, carmine sodium, cochineal, and glycerin, which reassures people that it is an entirely natural product. Though Halal cosmetics were initially prepared for Muslims,they are currently consumed globally by people of all religions and ethnic backgrounds as they are recognized for their safety, hygiene, and ethical quality, and this factor is driving the Global Halal Cosmetics and Personal Care market.

关键词：清真；穆斯林；银行；服装；食品；化妆品

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以钛酸四异丙酯为钛源,聚氧化乙烯(PEO)为结构改良剂,采用无需模板的溶胶-凝胶技术制得了具有高比表面积、大孔-介孔双连接结构的钛胶整体柱.研究了PEO、冰乙酸、水以及凝胶化时间对钛胶整体柱形貌和比表面积的影响.采用扫描电子显微镜(SEM)和比表面分析仪对所合成的钛胶整体柱进行了表征.结果表明,经过350℃煅烧后得到钛胶整体柱:孔骨架尺寸为1μm、较窄的孔径分布(平均孔径为10.5 nm)、BET比表面积101.3m2/g、Langmuir比表面积143.3 m2/g、孔体积0.21 mL/g,并将其成功应用于HPLC对羧酸类化合物的分析.

关键词：钛胶整体柱;溶胶-凝胶法;高效液相色谱柱;大孔-介孔结构

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采用密度泛函理论(DFT)方法研究了一系列超碱金属复合物Al7X0/-(X=F,Cl,Br,I)的几何结构及二阶非线性光学(NLO)性质.结果表明,不同卤素的连接对Al0/-簇的几何构型影响均很小.计算得到Al7X和Al7X-体系的垂直电离能(VIE)均低于Cs原子的第一电离势(IP=3.90 eV),表明这些体系具有超碱金属的性质,可称其为超碱金属.此外,采用CAM-B3 LYP,M06-2X和PBE0等3种泛函计算了该体系的非线性光学性质,结果显示,上述体系均具有较大的第一超极化率(β0),其中Al7I-的风值为21679 a.u.,是已知超碱金属复合物BLi6F(11459 a.u.)的1.9倍.值得注意的是,该类体系的第一超极化率随着卤素电负性的减小而增大,即Al7Fo/-＜Al7Cl0/-＜Al7Br0/-＜Al7I0/-,与其垂直电离能具有相同的变化规律.

关键词：密度泛函理论;非线性光学性质;超碱金属;第一超极化率;Density functional theory;Nonlinear optical property;Superalkali;First hyperpolarizability

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由于碳纳米管具有优异的结构和性能,近年来,对其改善复合材料性能的研究已经成为纳米材料领域的前沿和热点.碳纳米管在基体中的分散性对其发挥功能性有重要影响.详细综述了碳纳米管的分散方法(机械搅拌法、超声处理法、电场诱导法和表面修饰法)及研究进展,指出了目前研究中存在的不足,并对今后研究中应着重考虑的质量损失、大批量分散等问题作了分析.

关键词：碳纳米管；多壁碳纳米管；分散性

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在N,N-二甲基甲酰胺中采用脂肪醇聚氧乙烯醚对苯乙烯-马来酸酐共聚物(SMA)进行接枝酯化改性,制备了系列梳状两亲性SMA脂肪醇聚氧乙烯醚单酯钠盐,SMA-g-O-3、SMA-g-O-6、SMA-g-O-10、SMA-g-O-15和SMA-g-O-20,通过红外和GPC分析佐证了接枝酯化的发生.将其应用于皮革复鞣加脂工艺中,研究了SMA钠盐及SMA脂肪醇聚氧乙烯醚单酯钠盐对成革接触角和静态吸水率的影响.结果表明:SMA钠盐及SMA脂肪醇聚氧乙烯醚单酯钠盐处理后的铬鞣胶原纤维,随着乙氧基数目的增加,静态吸水率逐渐提高,而表面接触角逐渐减少.

关键词：梳状两亲；苯乙烯-马来酸酐共聚物；脂肪醇聚氧乙烯醚；铬鞣胶原纤维

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阐述了表征石墨烯层数的几种手段,主要有透射电镜(TEM)、拉曼光谱(RAMAN)、原子力显微镜(AFM)、光学显微镜和扫描隧道显微镜(STM)等,并指出了各种表征手段的局限性.石墨烯层数的表征方法还有待完善.

关键词：石墨烯；层数；表征

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