Copper phthalocyanine as corrosion inhibitor for ASTM A606-4 steel in 16% hydrochloric acid

A study based on the corrosion inhibition properties of copper phthalocyanine is described. Coverage degrees of copper phthalocyanine (Cu-phcy) on ASTM-A606-4 steel, obtained by weight loss measurements, were fitted to Langmuir, Frumkin, Temkin and Flory–Huggins adsorption isotherms. A better fit to the Langmuir isotherm was obtained. The polarization curves showed that polarization of both the anodic and cathodic reactions were verified for concentrations higher than 10^–4 M, indicating a mixed type action. Only the anodic reactions were polarized for lower concentrations. At high frequencies the Nyquist diagrams showed one capacitive loop attributable to double layer charging and a small one at intermediary frequencies attributable to the faradaic process of hydrogen evolution. The formation of an adsorbed film was characterized by increasing charge transfer resistance values in the low frequency range for increasing inhibitor concentrations. According to the techniques used in this study, copper phthalocyanines showed a high corrosion inhibiting efficiency for all concentrations.     

真空蒸发沉积VOPc薄膜及磁场对薄膜结构与性能的影响

用真空蒸发制备了酞菁氧钒 (VOPc)薄膜 ,并在磁场中进行了热处理。用X光电子能谱、X射线衍射、紫外 可见吸收光谱、原子力显微镜等手段对制备的薄膜进行了表征。结果表明沉积的酞菁氧钒薄膜为α 型 ,成分接近酞菁氧钒的分子式。制备的薄膜在磁场中进行了热处理 ,发现磁场使酞菁氧钒薄膜性质发生改变 :UV VIS吸收谱Q带发生红移 ;XRD谱图衍射峰强度明显增强 ,峰位略有变化 ;原子力显微镜 (AFM)分析发现晶粒大小无明显变化。以上结果说明磁场的存在使得VOPc分子在热处理过程中发生了定向的排列     

四异丁氧基镍酞菁的合成及其溶剂效应

4 异丁氧基邻苯二腈与氯化镍在强有机碱 1 ,8 二氮杂双环 (5 ,4,0 )十一碳烯 7催化下反应 ,合成了四异丁氧基镍酞菁 ,产物经FT -IR、元素分析、UV -Vis吸收光谱和1 H NMR表征了结构 ;并研究了其溶剂效应 ,结果表明 :最大吸收峰波数ν与函数 f(n ,ε)存在一定的线性关系 ,线性相关系数为 0 940 2 ,而Bayliss函数项 (n2 - 1 ) /(2n2 +1 )决定了最大吸收波长 (λmax)的位移变化 ;化合物的λmax在不同溶剂中随聚集程度增加 ,发生一定程度的蓝移     

Modeling of solid—liquid adsorption: Effects of adsorbent loads on model parameters

The adsorption of cobalt phthalocyanine dye onto activated carbon in a continuous stirred tank adsorber was studied. The variables investigated were: adsorbent mass, adsorbent particle size and fluid flowrate. Several models based on film, pore and surface diffusion were constructed and fitted to the experimental data. Experimental results showed: (i) the increasing importance of the film mass transfer resistance for increasing adsorbent loads; (ii) the increasing importance of the surface diffusion mechanism for increasing adsorbent loads; and (iii) the better discrimination among different models for higher adsorbent loads and lower flowrate.     

磺化聚芳醚酮酮催化合成顺丁烯二酸二丁酯

以交联的聚芳醚酮酮和20％发烟硫酸合成了磺化聚芳醚酮酮树脂，并用于顺丁烯二酸酐和正丁醇的催化酯化，最佳条件：醇：酐为2．5：1（物质的量比）；催化剂用量为2．5g，反应温度140－150℃，反应时间7h ，酯化率96．4％。气相色谱分析结果：顺丁烯二酸二丁酯的含量达99．96％，催化剂易回收且可重复使用。     

近红外敏感的功能分离型有机光接受体系的光导性能研究Ⅱ．CGL／CTL界面能级匹配对体系光导性能的影响

功能分离型光接受体系是由载流子产生层（ＣＧＬ），载流子传输层（ＣＴＬ）和载流子阻挡层（ＵＣｔ）组Ａ成的一种多层光接受体系．本文合成了一系列载流子传输层材料，如吡唑啉、唑和腙的衍生物，并将上述ＣＴＬ材料与酞菁类ＣＧＬ材料，按一定涂布工艺制成近红外敏感（７８０～８３０ｎｍ）的多层光接受体系．通过对样品电照相性能的表征，着重讨论了ＣＧＬｌＣＴＬ界面能级匹配问题及其对体系光导性能的影响。     

The electrochemical behavior of cobalt phthalocyanine/platinum as methanol-resistant oxygen-reduction electrocatalysts for DMFC

The electrochemical behavior of cobalt phthalocyanine/platinum as methanol-resistant oxygen-reduction electrocatalyst for DMFC was investigated. Platinum was chemically deposited on the carbon-supported cobalt phthalocyanine (CoPc), and then it was heat-treated in high purity nitrogen at 300 °C, 635 °C and 980 °C. In order to evaluate the electrocatalytic behavior of CoPc-Pt/C, the PtCo/C and Pt/C as reference catalysts were employed. TGA, XRD, EDAX, XPS and electrochemical experiments were used to study the thermal stability, crystal structure, physical characterization and electrochemical behavior of these catalysts. These catalysts exhibited similar electrocatalytic activity for oxygen reaction in 0.5 M H₂SO₄ solution. In methanol tolerance experiments, Pt/C, PtCo/C and CoPc-Pt/C heated at 980 °C were active for the methanol oxidation reaction (MOR). The presence of Co did not improve resistance to methanol poisoning. However, the CoPc-Pt/C after 300 °C or 635 °C heat-treatment demonstrated significant inactivity for MOR, hence they have a good ability to resist methanol poisoning. The current study indicated that the macrocyclic structure of phthalocyanine is the most important factor to improve the methanol tolerance of CoPc-Pt/C as the oxygen-reduction reaction (ORR) electrocatalyst. The CoPc-Pt based catalyst should be a good alternation for oxygen electro-reduction reaction in DMFC.     

磺化酞菁镓的二聚现象研究

采用分光光度法研究了磺化酞菁镓的二聚现象；测定了二聚常数Ｋｄ，讨论了ｐＨ值、离子强度、水、温度等因素对Ｋｄ的影响。研究结果表明：磺化酞菁镓的二聚反应可表示成： ２ＳＰｃＧａＯＨ→（ＳＰｃＧａ）２Ｏ＋Ｈ２Ｏ且磺化酞菁镓的二聚常数随着离子强度、磺酸基数目、水的浓度的增加而增加。     

双核酞菁钴磺酸铵用于催化裂化汽油的脱臭

采用尿素法合成了双核酞菁钴磺酸铵;通过正交实验及单因素实验,考察了双核酞菁钴磺酸铵在液-液催化氧化法中对催化裂化汽油脱臭的最佳工艺条件:碱液质量分数为10%,催化剂加入量为1 0g·L-1,反应温度为40℃,反应时间为3min;与磺化酞菁钴和美国进口脱臭催化剂ARI100-EXL的脱硫醇效果进行了比较,结果表明双核酞菁钴磺酸铵对汽油的脱臭效果明显优越于磺化酞菁钴催化剂,与进口催化剂的脱臭效果基本相当。     

四-（2,4-二甲基-3-戊氧基）酞菁钴（Ⅱ）的合成、表征和性质研究

以2-溴代丙烷、异丁醛、3-硝基邻苯二甲腈、无水二氯化钴为主要初始原料合成了四-（2,4-二甲基-3-戊氧基）酞菁钴（CoPc）,并采用元素分析、红外光谱及质谱对目标产物进行表征,同时研究了它的电子吸收光谱和热稳定性。