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tungsten(IV) oxide

中文名称
——
中文别名
——
英文名称
tungsten(IV) oxide
英文别名
tungsten dioxide;tungsten;dihydrate
tungsten(IV) oxide化学式
CAS
——
化学式
O2W
mdl
——
分子量
215.849
InChiKey
ZBZGLYWJHCAVBW-UHFFFAOYSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    -1.65
  • 重原子数:
    3
  • 可旋转键数:
    0
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.0
  • 拓扑面积:
    2
  • 氢给体数:
    2
  • 氢受体数:
    2

反应信息

  • 作为反应物:
    描述:
    tungsten(IV) oxide四氯化碳 作用下, 生成 四氯化钨
    参考文献:
    名称:
    Michael, A.; Murphey, A., American Chemical Journal, 1910, vol. 44, p. 382
    摘要:
    DOI:
  • 作为产物:
    描述:
    四氯化钨 在 H2O 作用下, 以 为溶剂, 生成 tungsten(IV) oxide
    参考文献:
    名称:
    Gmelin Handbuch der Anorganischen Chemie, Gmelin Handbook: W: MVol., 2.3.1, page 111 - 113
    摘要:
    DOI:
  • 作为试剂:
    描述:
    对硝基苯甲酸tungsten(IV) oxide氢气 作用下, 以 乙醇 为溶剂, 150.0 ℃ 、3.0 MPa 条件下, 反应 15.0h, 生成 乙烷,三氯氟-对氨基苯甲酸
    参考文献:
    名称:
    Oxygen-Deficient Tungsten Oxide as Versatile and Efficient Hydrogenation Catalyst
    摘要:
    Heterogeneous hydrogenation is one of the most important industrial operations, and reduced metals (mostly noble metals and a few inexpensive metals) generally serve as the catalyst to activate molecular H-2. Herein we report oxygen-deficient tungsten oxide, such as WO2.72, is a versatile and efficient catalyst for the hydrogenation of linear olefins, cyclic olefins, and aryl nitro groups, with obvious advantages compared with non-noble metal nickel catalyst from the aspect of activity and selectivity. Density functional theory calculations prove the oxygen-deficient surface activates H-2 very easily in both kinetics and thermodynamics. Testing on several oxygen-deficient tungsten oxides shows a linear dependence between the hydrogenation activity and oxygen vacancy concentration. Tungsten is earth-abundant, and WO2.72 can be synthesized in large scale using a low-cost procedure, which provides an ideal catalyst for industrial application. Because oxygen vacancy is a common characteristic of many metal oxides, the findings in this work may be extended to other metal oxides and thus provide the possibility for exploring a new type of hydrogenation catalyst.
    DOI:
    10.1021/acscatal.5b01522
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文献信息

  • Near Infrared Absorption of Tungsten Oxide Nanoparticle Dispersions
    作者:Hiromitsu Takeda、Kenji Adachi
    DOI:10.1111/j.1551-2916.2007.02065.x
    日期:——
    Homogeneous dispersions of reduced tungsten oxide and tungsten bronze nanoparticles with ternary additives Na, Tl, Rb, and Cs have been prepared in the wet process and examined for optical properties. The dispersions of reduced tungsten oxide and tungsten bronze nanoparticles are found to show a remarkable absorption of near infrared light while retaining a high transmittance of visible light. This property is highly suitable for solar control filters in automotive and architectural windows.
    在湿法工艺中制备了还原钨氧化物和钨青铜纳米颗粒与三元添加剂Na、Tl、Rb和Cs的均匀分散体,并研究其光学特性。发现此类还原钨氧化物和钨青铜纳米颗粒分散体对近红外光具有显著吸收,同时保持可见光的高透射率。这一特性使之非常适合用于汽车和建筑窗的太阳辐射控制滤光片。
  • COPPER NANOPARTICLE BASED CHEMOSELECTIVE REDUCTION
    申请人:Brown University
    公开号:US20210355073A1
    公开(公告)日:2021-11-18
    The instant invention provides processes for a chemo selective reduction of a nitro group within a compound in the presence of other groups which can also be reduced. This aspect of the present invention provides an ammonia borane (AB) initiated chemoselective reduction process of a nitro group contained within a compound in the presence of a copper (Cu) nanoparticle based catalyst. The invention is also directed to Copper (Cu) nanoparticle (NP) based catalysts, selected from Cu/WO x , Cu/SiO 2 , and Cu/C; wherein x represents an integer having a value of from about 2 to about 3.5, used in the chemo selective reduction of a nitro group contained within a compound in the presence of other groups which can also be reduced.
    该即时发明提供了一种在化合物中其他也可被还原的基团存在的情况下对硝基基团进行化学选择性还原的过程。本发明的这一方面提供了一种氨硼烷(AB)引发的化学选择性还原过程,用于在铜(Cu)纳米颗粒基催化剂存在的情况下对化合物中含有的硝基基团进行还原。该发明还涉及基于铜(Cu)纳米颗粒(NP)的催化剂,选自Cu/WOx、Cu/SiO2和Cu/C;其中x代表一个值约为2到3.5的整数,在化合物中其他也可被还原的基团存在的情况下用于对硝基基团进行化学选择性还原。
  • AgPd Nanoparticles Deposited on WO<sub>2.72</sub> Nanorods as an Efficient Catalyst for One-Pot Conversion of Nitrophenol/Nitroacetophenone into Benzoxazole/Quinazoline
    作者:Chao Yu、Xuefeng Guo、Zheng Xi、Michelle Muzzio、Zhouyang Yin、Bo Shen、Junrui Li、Christopher T. Seto、Shouheng Sun
    DOI:10.1021/jacs.7b01983
    日期:2017.4.26
    acid, 2-nitrophenol, and aldehydes into benzoxazoles in near quantitative yields under mild conditions. The catalysis can also be extended to the one-pot reactions of ammonium formate, 2-nitroacetophenone, and aldehyde for high yield syntheses of quinazolines. Our studies demonstrate a new catalyst design to achieve a green chemistry approach to one-pot reactions for the syntheses of benzoxazoles and quinazolines
    我们报告了在 40 × 5 nm WO2.72 纳米棒 (NRs) 存在下 2.3 nm AgPd 纳米粒子 (NPs) 的种子介导生长,用于合成 AgPd/WO2.72 复合材料。AgPd NPs 和 WO2.72 NRs 之间的强相互作用使复合材料,尤其是 Ag48Pd52/WO2.72,对甲酸脱氢(TOF = 1718 h-1 和 Ea = 31 kJ/mol)和一锅反应具有催化活性在温和条件下以接近定量的产率将甲酸、2-硝基苯酚和醛转化为苯并恶唑。该催化作用还可以扩展到甲酸铵、2-硝基苯乙酮和醛的一锅反应,用于高产率合成喹唑啉。我们的研究展示了一种新的催化剂设计,可实现苯并恶唑和喹唑啉合成的一锅法反应的绿色化学方法。
  • MOLYBDENUM- AND TUNGSTEN-CONTAINING PRECURSORS FOR THIN FILM DEPOSITION
    申请人:DUSSARRAT Christian
    公开号:US20170204126A1
    公开(公告)日:2017-07-20
    Electrochromic tungsten or molybdenum oxide and their doped derivative nanomaterials are prepared using sol-gel or vapor deposition methods from precursors containing only tungsten, oxygen, carbon and hydrogen, as other elements can generate optical defects impacting the electrochromic performances. Preferably, the liquid and volatile compound W(═O)(OsBu) 4 is the precursor used.
    电致变色的钨或钼氧化物及其掺杂衍生纳米材料是使用仅含有钨、氧、碳和氢的前体物质,通过溶胶-凝胶或蒸发沉积方法制备的,因为其他元素可能产生影响电致变色性能的光学缺陷。最好使用液体和挥发性化合物W(═O)(OsBu)4作为前体。
  • 氧化钨负载单原子催化剂在木质素氢解制芳香族化合物中的应用
    申请人:中国科学院大连化学物理研究所
    公开号:CN112824368A
    公开(公告)日:2021-05-21
    本发明提供一种氧化钨负载单原子催化剂在木质素氢解制芳香族化合物中的应用。该方法以多种β‑O‑4模型分子和有机木质素、木质素磺酸盐、碱木质素为原料,在150℃‑240℃,0.7‑3.0MPa的氢气氛中实现高选择性裂解芳醚键获得芳香族化合物。与现有方法相比,本发明能使用可再生天然生物质为原料,以不同木质素为原料转化时,芳香族生物油收率为最高为72%。原料廉价且来源广泛;无需使用无机酸、碱,避免了传统木质素催化大量碱液的产生;具有钨基催化剂廉价、反应过程绿色、原子经济性等特征,还具有反应条件温和、活性和选择性高、反应过程环境友好等特征。
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