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Structures and optical properties of tungsten oxide thin films deposited by magnetron sputtering of6p.- Tungsten oxide thin films were deposited on glass substrates by the magnetron sputtering of WO3 bulk at room temperature. The deposited films were annealed at different temperatures in air. The structural measurements indicate that the films annealed below 300℃ were amorphous, while the films anneal
- 2700Cristina 发布于2357天之前
- Reduction Process of Blue Tungsten Oxide and its Microcomputer Process Control5p.
- The grain size control of the tungsten powder is essential for high quality tungsten products making. Based on the studies onthe hydrogen reduction process of tungsten oxide, a microcomputer system is introduced to the reduction process parameters con-trol. The microcomputer process control system,
- 600Cristina 发布于2357天之前
- Effects of WOx modification on the activity, adsorption and redox properties of CeO2 catalyst for NO12p.
- A series of WO3/CeO2 (WOx/CeO2) catalysts were synthesized by wet impregnation of ammonium metatungstate on a CeO2 support. The resulting solid acid catalysts were characterized by X-ray diffraction (XRD), UV-Vis spectroscopy (UV-Vis), Raman spectroscopy (Raman), in-situ Fourier transform infrared s
- 500Cristina 发布于2357天之前
- Crystal growth of tungsten during hydrogen reduction of tungsten oxide at high temperature5p.
- Crystal growth of tungsten during hydrogen reduction of tungsten oxide (WO3) to prepare coarse grain tungsten powder at high temperature (950 ℃) was studied. The phase composition and morphologies of products were investigated by means of XRD and SEM. The results show that the reduction sequence of
- 300Cristina 发布于2357天之前
- 新型钨酸盐的合成及催化环氧化环戊烯反应4p.
- 本文讲述了合成新型喹啉十聚钨酸盐化合物[C3Quin]4W10O32,并对该化合物催化环氧化环戊烯的反应进行研究.考察了催化剂([C3Quin]4W10O32),氧化剂(UHP),反应溶剂([Bmim]BF4)和反应时间等因素对反应收率的影响。
- 2300caihuan 发布于2611天之前
- 磷钨酸盐的合成_表征及催化四氢吡喃化反应4p.
- 用磷钨酸铜、磷钨酸锌和磷钨酸铝催化醇的四氢吡喃化反应,考察了原料比、催化剂用量、溶剂和温度对四氢吡喃醚的产率的影响。
- 500caihuan 发布于2611天之前
- 以四丁铵六钨酸盐为可重复使用非均_省略_合成1_8_二氧十氢吖啶5p.
- Tetrabutylammonium hexatungstate,[TBA]2[W6O19],has been used as an efficient,inexpensive,and recyclable green catalyst for the one-pot three-component synthesis of 1,8-dioxodecahydroacridines by the reaction of dimedone with aromatic or aliphatic aldehydes in the presence of a nitrogen source(ammoni
- 100caihuan 发布于2611天之前
- 硫代钨酸盐晶体的低温溶剂热合成及表征4p.
- 应用低温溶剂热方法合成了硫代钨酸盐晶体,对样品进行了表征,这种方法反应条件温和,操作简便,对环境无污染;得到的晶体晶貌良好,晶相纯。
- 200caihuan 发布于2611天之前
- 混合表面活性剂制备钨酸盐纳米材料及其发光性能的研究1p.
- 钨酸盐纳米材料作为一种自激活荧光体,其发光源于钨酸根络离子,无需向其中掺入其它的激活离子,在UV、X射线及CR激发下即可呈现高效的荧光发射性能。钨酸盐常见的晶体结构一般可分为两种,其中白钨矿结构(如钙、钡、铅、锶等)的钨酸盐晶体具有较高的密度.
- 300caihuan 发布于2611天之前
- 罗丹明6G_钨酸盐高灵敏光度法测定痕量铱3p.
- 铱的显色反应研究不多,Ir(Ⅲ)-SnBr2、-α-巯基苯并噻唑法灵敏度不高,用罗丹明6G_钨酸盐高灵敏光度法测定痕量铱获得较好效果。
- 100caihuan 发布于2611天之前
- Keggin结构过渡金属取代硼钨酸盐的电化学及电催化还原5p.
- 采用循环伏安法,研究了Keggin结构过渡金属取代硼钨酸盐K7[MBW11(H2O)O39].H2O(简写为MBW11,M=Cu,Co,Ni)的电化学性质及电催化活性。
- 200caihuan 发布于2611天之前
- 钒取代杂多钨酸盐抗伪狂犬病病毒的活性4p.
- 合成了10种钒取代的杂多钨酸盐，采用细胞培养法，测定了各化合物对兔肾（RK）细胞的毒性及在无毒浓度下，抗伪狂犬病病毒（PRV）的活性。
- 000caihuan 发布于2611天之前
- 2_2型过氧钨酸盐的制备_结构和性质研究4p.
- 在H2O2溶液中.通过活性粉状白钨酸的解聚制备了二个O22-:W为2:2型的新的过氧钨酸盐:K2W2Os（O2）2·4H2O（1）和(Et4N-)2W2O5（O2）2·2H2O（2），用IR、UV和XRD对二个过氧化物进行了表征,并推断了过氧钨酸阴离子的可能结构。
- 000caihuan 发布于2611天之前
- SE_902过钨酸盐在高氯高硬水中缓蚀阻垢的机理研究4p.
- SE-902复方过钨酸盐克服了传统钨系配方弊病,缓蚀阻垢性能得到明显改进,已在高硬高氯水、脱硬、脱盐水中得到成功应用。
- 000caihuan 发布于2611天之前
- 掺Tm_3_和Tm_3_Ho_3_省略_碲钨酸盐玻璃中能量转换过程和机理7p.
- 本文研究了808nm激光二极管抽运下掺Tm3 和Tm3 /Ho3 共掺碲酸盐玻璃的能量转换过程和机理.利用Dexter模型计算了能量转换微观参数和临界半径,分析了两者的变化特性。
- 000caihuan 发布于2611天之前
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