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3-二茂铁基-2-丁烯酸乙酯与8种不同类型的酰氯反应,合成了8种具有两亲结构的α,β-不饱和酯二茂铁双取代新衍生物。同时,发现一种新的酰化反应现象,即3-二茂铁基-2-丁烯酸乙酯与2-丁烯酰氯或肉桂酰氯反应时,酰化反应既能在茂环上又能在α,β-不饱和酯基的烯键上发生,得到另两种新化合物。测得了上述10种化合物的1HNMR谱、IR光谱及元素分析数据。 相似文献
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用直接在5×10^-^5mol.dm^-^3稀土(III)氯化物水溶液的液面上铺展稀土(III)三硬脂酸盐(简称LnSt~3)的方法,在疏水光学玻璃片上连续沉积了44层以上的含稀土(III)(La、Nd、Sm、Eu、Tb)硬脂酸盐LB膜,转移比为0.7-0.8。低角度X射线衍射(2θ=0.3-14ⅲ)结果表明,膜的结构为高度有序的层状结构,相邻稀土离子面的间距为4.7-4.8nm。X射线光电子能谱(XPS)证实了五种膜中分别含有La、Nd、Sm、Eu和Tb元素。此外,还对LnSt~3LB膜进行了红外光谱考察,表明在亚相中加入一定浓度的稀土离子能有效地抑止界面上LnSt~3的水解作用,为制备含稀土(III)离子的优质LB膜提供了依据。 相似文献
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负载于多孔性、高比表面载体上的三氧化铝是重要的工业催化剂,多年来人们对催化剂中Croa的存在状态以及与载体的相互作用进行了广泛的研究[‘-4],发现CrO。能在载体表gn散成非晶相的表面化合物,非晶相Cr(VI)具有较高的催化活性.我们曾经对MoO。/NaY,MoO。/NaM体系进行过系统的研究,发现MOO。与分子筛载体间存在强表面相互作用[’].在此研究基础上,选择了CrO3/NaY、CrO。/NaM体系,采用XRD法对上述体系进行了研究.结果表明170oC下晶相CrO。能在NaY、NaM分子筛上自发分散成非晶相Cr(VI),且分散量大.C… 相似文献
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2,6—二甲基吡啶在Y型分子筛的Bronsted和Lewis酸中心上的吸附动力学董玉林,杨孔章(山东大学胶体与界面化学研究所,济南250100)关键词Y型分子筛,酸中心,Lewis酸中心,2,6—二甲基吡啶,吸附动力学沸石分子筛是一类固体酸催化剂,在... 相似文献
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Stable monolayers of electropolymerized poly-N-vinylcarbazole (EPVK) and arachidic acid(AA) are obtained on a subphase of alkaline Tl2O3 colloidal solutions. As revealed by the atomic force microscope, there is phase separation in the mixed LB monolayers. Transmission electron microscopic observations reveal that ordered arrays of composite Tl2O3/Epvk nanowires are formed in the mixed monolayers. Formation of the composite nanowire arrays is attributed to the ordered adsorption of Tl2O3 colloidal particles along the polycationic EPVK chains. The composite nanowire array is 3.2nm wide with a spacing of 2.7nm.The composite nanowire arrays can also be formed when pure EPVK is used. Composite LB multilayers of Tl2O3/EPVK nanowire arrays are prepared. The bilayer spacing is 5.54nm.The present study is of importance to the fabrication of inorganic semiconductor/functional polymer composite nanowires. 相似文献
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Doping silver nanoparticles in AOT lyotropic lamellar phases 总被引:1,自引:0,他引:1
The organic lyotropic liquid crystal with long-range structural order is used as template to assemble inorganic/organic hybrid by doping pre-fabricated Ag nanoparticles. The lamellar hybrid with both hydrophilic and hydrophobic particles doped simultaneously is realized for the first time. The change of template structure after doping and the stability origin of dual-doped system are characterized by small angle X-ray scattering and polarized optical microscopy. Results show that the interaction and space matching between surfactant bilayers and doped particles are key factors to obtain stable hybrid. 相似文献
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