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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Mono-transition-metal-substituted polyoxometalate intercalated layered double hydroxides for the catalytic decontamination of sulfur mustard simulant
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Mono-transition-metal-substituted polyoxometalate intercalated layered double hydroxides for the catalytic decontamination of sulfur mustard simulant

机译：用于硫磺芥子模拟剂催化净化的单转化 - 金属取代的多氧化多氧化层层状双氢氧化物

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摘要

The Keggin-type mono-transition-metal-substituted [PW11M(H2O)O-39](5-) (PW11M, M = Ni, Co, Cu) were intercalated into Zn2Cr-based layered double hydroxide (Zn2Cr-LDH) by an exfoliation-reassembly method and the synthesized Zn2Cr-LDH-PW11M composites were thoroughly characterized by Fourier transform infrared (FT-IR) spectroscopy, powder X-ray diffraction (PXRD), solid state P-31 nuclear magnetic resonance (P-31 NMR) spectroscopy, thermogravimetric analysis (TGA), inductively coupled plasma atomic emission spectroscopy (ICP-AES), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The three composites can be used as heterogeneous catalysts to promote the oxidative decontamination of the sulfur mustard simulant 2-chloroethyl ethyl sulfide (CEES). Interestingly, a cooperative effect between the PW11M cluster and Zn2Cr-LDH is evidenced by the fact that the composites have a higher catalytic performance than either of the individual constituents alone. The catalytic activity of Zn2Cr-LDH-PW11M is significantly influenced by the substituted transition metals, showing the order: Zn2Cr-LDH-PW11Ni > Zn2Cr-LDH-PW11Co > Zn2Cr-LDH-PW11Cu. Under ambient conditions, the Zn2Cr-LDH-PW11Ni composite can convert 98% of CEES in 3 h using nearly stoichiometric 3% aqueous H2O2 with the selectivity of 94% for the nontoxic product 2-chloroethyl ethyl sulfoxide (CEESO). Moreover, the decontaminating material, Zn2Cr-LDH-PW11Ni, is stable to leaching and can be readily reused for up to ten cycles without obvious loss of its activity.
机译：Keggin型单型转化 - 金属取代的[PW11M（H2O）O-39]（5-）（PW11M，M = Ni，CO，Cu）嵌入到基于Zn2CR的层状双氢氧化物（Zn2Cr-LDH）中通过傅里叶变换红外（FT-IR）光谱，粉末X射线衍射（PXRD），固态P-31核磁共振（P-31 NMR）彻底地表征了剥离 - 重组方法和合成的Zn2Cr-LDH-PW11M复合材料。（P-31 NMR ）光谱，热重分析（TGA），电感耦合等离子体原子发射光谱（ICP-AES），扫描电子显微镜（SEM）和透射电子显微镜（TEM）。三种复合材料可用作异质催化剂，以促进硫磺芥末模拟剂2-氯乙基硫醚（CEE）的氧化去污。有趣的是，PW11M簇​​和Zn2Cr-LDH之间的协同效应通过组复合材料具有比单独的任一成分的催化性能更高的催化性能来证明。 Zn2Cr-LDH-PW11m的催化活性受到取代过渡金属的显着影响，显示顺序：Zn2Cr-LDH-PW11NI> Zn2Cr-LDH-PW11CO> Zn2Cr-LDH-PW11cu。在环境条件下，Zn2Cr-LDH-PW11NI复合材料可以使用几乎化学计量的3％H 2 O 2水溶液将98％的CEES转化为3小时，选择性为NONTOXIC产物2-氯乙基亚砜（CEESO）的选择性为94％。此外，去块材料Zn2Cr-LDH-PW11NI稳定地浸出，并且可以容易地重用最多10个循环，而不会显着丧失其活性。

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    Sun Xiangrong; Dong Jing; Li Zhen; Liu Huifang; Jing Xiaoting; Chi Yingnan; Hu Changwen;

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    Beijing Inst Technol Beijing Key Lab Photoelect Electrophoton Convers Sch Chem &

    Chem Engn Key Lab Cluster Sci Minist Educ Beijing 100081 Peoples R China;

    Beijing Inst Technol Beijing Key Lab Photoelect Electrophoton Convers Sch Chem &

    Chem Engn Key Lab Cluster Sci Minist Educ Beijing 100081 Peoples R China;

    Beijing Inst Technol Beijing Key Lab Photoelect Electrophoton Convers Sch Chem &

    Chem Engn Key Lab Cluster Sci Minist Educ Beijing 100081 Peoples R China;

    Beijing Inst Technol Beijing Key Lab Photoelect Electrophoton Convers Sch Chem &

    Chem Engn Key Lab Cluster Sci Minist Educ Beijing 100081 Peoples R China;

    Beijing Inst Technol Beijing Key Lab Photoelect Electrophoton Convers Sch Chem &

    Chem Engn Key Lab Cluster Sci Minist Educ Beijing 100081 Peoples R China;

    Beijing Inst Technol Beijing Key Lab Photoelect Electrophoton Convers Sch Chem &

    Chem Engn Key Lab Cluster Sci Minist Educ Beijing 100081 Peoples R China;

    Beijing Inst Technol Beijing Key Lab Photoelect Electrophoton Convers Sch Chem &

    Chem Engn Key Lab Cluster Sci Minist Educ Beijing 100081 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;无机化学;
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