C60的物理性质

本文详细介绍了Ｃ６０的物理性质,简单介绍了Ｃ６０与金刚石和石墨的性质差异。     

碳的第三种单质——C60及全碳分子

碳的第三种单质—Ｃ６０及全碳分子黄尚毅段巨龙长期以来，人们知道碳元素只有两种单质，金刚石和石墨。但是，现在发现了碳元素单质家庭中的第三位成员，即以碳—６０（Ｃ６０）为代表的全碳分子系列物质。Ｃ６０及全碳分子的出现不仅在理论上意义非凡，而且是有极其广泛...     

C_(60)与富勒烯的结构及其应用前景

简要评述了Ｃ６０及富勒烯的发现和研究进展，对Ｃ６０及富勒烯的结构、结构与稳定性的关系、Ｃ６０的性质与应用前景进行了论述，指出了这一研究的重要意义     

C60的制备及其应用

本文简述了Ｃ６０的四种制备方法，讨论了Ｃ６０在光电磁、超导体、生物医学工程、化工等方面的应用。指出Ｃ６０是很有应用前景的新型功能材料。     

无硫膨胀石墨对Cr(VI)的吸附试验研究

通过L16(44)正交实验,研究了膨胀石墨投加量、Cr(VI)初始浓度、温度、p H等对Cr(VI)去除效果的影响,分析了膨胀石墨吸附Cr(VI)的热力学与动力学机理。结果显示,最佳工艺条件为:Cr(VI)初始浓度为40 mg·L-1,EG投加量为0.100 g,反应温度为30℃,p H值为3.0;膨胀石墨吸附Cr(VI)符合二级动力学模型,吸附热力学结果符合Langmuir等温方程式,证明Cr(VI)主要以单分子层形式被吸附于膨胀石墨表面。     

甲烷制氢新法

甲烷制氢新法该法是利用Ｃ６０作催化剂用甲烷制造氢气。日本工业技术院物质工学工业技术研究所利用Ｃ６０（碳原子结合成足球状的物质）作催化剂，用甲烷稳定地制造了氢气。利用Ｃ６０作催化剂，在理论上比现有金属催化剂使用寿命长。在现阶段，Ｃ６０在高温条件下才能够...     

电热原子化过程中气相成分的计算

本文根据热力学原理导出了电热原子化过程中石墨管内气相成分的计算公式,并计算了不同Ar气纯度时的气相成分。     

谈谈'97高考化学的最后一题

谈谈’９７高考化学的最后一题陕西师大化学系张八合原题：１９９６年诺贝尔化学奖授于对发现Ｃ６０有重大贡献的三位科学家。Ｃ６０分子是形如球状的多面体（如附图）,该结构的建立基于以附图Ｃ６０的结构下考虑：①Ｃ６０分子中每个碳原子只跟相邻的三个碳原子形成化学...     

N—未取代的C60吡咯烷衍生物的分离纯化和结构表征

Ｃ６０与α－氨基酸和醛酮反应生成Ｎ－未取代的Ｃ６０吡咯烷衍生物，本文给出了用柱层析法分离纯化产物的一般原理和过程，总结了用ＦＤ－ＭＳ，ＦＴ－ＩＲ，ＵＶ－Ｖｉｓ，＾１Ｈ－ＮＭＲ和＾１３Ｃ－ＮＭＲ表征产物结构时所给出的共同特征。     

试论关于富勒烯命名讨论的意义

试论关于富勒烯命名讨论的意义黄尚毅段巨龙陈鸿卿以Ｃ６０为代表的富勒烯系列分子的发现，近年来在科技界引起了轰动。由于它们的特殊结构和性能，不仅受到化学界高度重视，还成为凝聚态物理学和材料科学界竞相研究的热门课题，美国《科学》杂志把Ｃ６０评为１９９１年度...     

杂环化合物的标准生成焓和共振能之间的关系

由气态原子标准生成焓和键焓,计算了9个杂环化合物的气态标准生成治,所得结果与实验结果相吻合.还用HMO方法计算了它们的共振能,并讨论了共振能、键焓对标准异构化焓的影响.     

~(13)C_(84)(D_2)分子气相统计熵及热容的计算

采用统计热力学方法及理想气体模型计算了气相13C84（D2）分子在101325Pa压力及不同温度下的统计熵及热容．给出了统计熵及热容与热力学温度之间的关系．计算结果表明，在相同压力及温度下，13C84（D2）分子的统计熵及热容比C84（D2）分子的统计熵及热容要大．     

Triethoxysilane with oligo（ethylene oxide） substituent as film forming additive for graphite anode

{3-[2-(2-methoxyethoxy) ethoxy]-propyl} triethoxysilane (TESM2) was synthesized and used as an electrolyte additive to improve the performances of lithium-ion batteries (LIBs). The electrochemical properties of the electrolyte (1 mol/L lithium hexafluorophosphate (LiPF₆)/ethylene carbonate (EC):diethylene carbonate (DEC):dimethyl carbonate (DMC), 1:1:1) with different contents of TESM2 were characterized by ionic conductivity measurement, galvanostatic charge/discharge test of graphite/Li half cells, and electrochemical impedance spectroscopy. Both the cycling performances and C-rate capabilities of graphite/Li half cells were significantly improved with an optimized content of 15% TESM2 in the electrolyte. The graphite/Li half cell delivered a very high specific capacity of 370 mAh/g at 0.2C rate without any capacity loss for 60 cycles, and retained a capacity of 292 mAh/g at 2C rate. The solid electrolyte interphase (SEI) film on the surface of the graphite anode was investigated by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS), indicating that TESM2 was effectively involved in the formation of SEI film on the surface of graphite.     

石墨炉原子吸收法测定补钙剂口服液中痕量铅和镉

本文探讨了石墨炉原子吸收法测定补钙剂中痕量的铅和镉，研究了石墨炉升温程序及基体改进剂对测定的影响．测定结果表明，采用塞曼扣背景的方法，以硝酸和磷酸铵为基体改进剂，使样品基体干扰大大减少，回收率达到97％以上，可获得满意的测定结果．     

影响阴离子型增稠剂性能的因素

本文详细讨论了原料结构及配比、催化剂用量、反应温度等因素对阴离子型增稠剂增稠性能的影响。     

独立反应数及独立反应式的确定

本文根据线性代数的原理,阐述了复杂反应系统的独立反应数R及独立反应式的确定方法.     

纳米碳粒的石墨碎片微结构及电化学性质

文章采用HRTEM（高分辨透射电镜）、XRD（X射线衍射）表征了三种不同纳米碳粒的石墨碎片微结构及其石墨化程度,并采用CV（循环伏安）、EIS（交流阻抗图谱）方法对由纳米碳粒制备的电极的电化学性质进行了研究。结果发现：随纳米碳粒石墨化度的减小,石墨碎片卷曲形态的清晰度增加,对应电极的电化学反应速率常数及电容值增大。作者认为：石墨碎片的卷曲和石墨化属于两种不同形式的碳原子有序化,二者均可对纳米碳粒的电化学性质产生影响。     

THE MEASUREMENT OF TEACHERS' ATTITUDES

As a result of group discussions with working class pupils from areas of high delinquency it was postulated that there were at least three broad and overlapping categories of pupils attending comprehensive schools in these districts. These were termed school‐orientated pupils, nonchalant pupils and anti‐school pupils. An attempt was then made to ascertain some of the main differences in attitudes towards school between offenders and non‐offenders. Generally speaking it was found that non‐offenders occupied the first and second of the above categories and offenders the second and third. Questionnaires were given to 120 pupils composed of a group of 60 non‐offenders and a group of 60 offenders. All the pupils were attending school but while all the non‐offenders were still at day school most of the offenders were in the care of their local authorities. The offenders were found to have presented more problems for the school authorities either through misbehaviour or truancy. On attitude items (Likert‐type scale) relating to school and lessons there were differences in responses from the two groups at a high level of significance. The remaining items (both concerning teachers) showed no significant differences.     

膨胀石墨负载氮掺杂二氧化钛降解甲基橙的光催化性能

采用溶胶-凝胶法制备了膨胀石墨负载TiO2和负载氮掺杂TiO2（N-TiO2）光催化剂,用XRD和SEM对样品进行表征,并以甲基橙溶液为目标降解物进行光催化性能的评价。结果表明：纳米TiO2可牢固地负载在膨胀石墨表面和层间,当达到吸附平衡后,煅烧温度为500℃条件下制备的膨胀石墨负载N-TiO2光催化剂在加入量为10 g/L、反应时间60 min的条件下,对初始浓度为15 mg/L的甲基橙溶液的降解率达到95.2%。