英语翻译文章如下 Using solid-state 29Si cross-polarization magic-ang
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英语翻译
文章如下
Using solid-state 29Si cross-polarization magic-angle spinning(CP MAS)NMR spectra,we confirmed that APS moieties are bonded on the LDHs covalently,forming the oxane bonds (M-O- Si (M=Zn and Cr in LDH)).Furthermore,the solid-state 29Si CP MAS NMR technique was applied to evaluate the nature of the M-O-Si bond around the Si atom.T n notations(n=0,1,2,3)are used to describe the extent of crosslinking depending on M-O-Si bond types,as summarized in Table 2.Table 2 shows the 29Si solid-state NMR peak assignments of T n peaks made previously and the peak positions in parts per million (ppm).[10] In Figure 3,29Si CP MAS NMR spectra and the corresponding least-squares fits of AL-M are shown.The experimental spectrum is composed of the central band and spinning sidebands denoted by an asterix.The central band can be decomposed into several individual peaks by a simulation.Through the spectral simulation,the types of oxane bonds attached on the silane moiety can be identified.Moreover,the relative percentage of each type of oxane bonds in the sample of APS-modified LDHs can be determined from their relative peak intensities; these results are summarized in Table 2.The oxane bonds attached on surface of AL-M can be mainly attributed to bidentate (T2)and tridentate(T3)types.Since there is no interference by DS anions in the AL-M system,most of the ethoxy groups of APS seem to form oxane bonds with hydroxyl groups.
文章如下
Using solid-state 29Si cross-polarization magic-angle spinning(CP MAS)NMR spectra,we confirmed that APS moieties are bonded on the LDHs covalently,forming the oxane bonds (M-O- Si (M=Zn and Cr in LDH)).Furthermore,the solid-state 29Si CP MAS NMR technique was applied to evaluate the nature of the M-O-Si bond around the Si atom.T n notations(n=0,1,2,3)are used to describe the extent of crosslinking depending on M-O-Si bond types,as summarized in Table 2.Table 2 shows the 29Si solid-state NMR peak assignments of T n peaks made previously and the peak positions in parts per million (ppm).[10] In Figure 3,29Si CP MAS NMR spectra and the corresponding least-squares fits of AL-M are shown.The experimental spectrum is composed of the central band and spinning sidebands denoted by an asterix.The central band can be decomposed into several individual peaks by a simulation.Through the spectral simulation,the types of oxane bonds attached on the silane moiety can be identified.Moreover,the relative percentage of each type of oxane bonds in the sample of APS-modified LDHs can be determined from their relative peak intensities; these results are summarized in Table 2.The oxane bonds attached on surface of AL-M can be mainly attributed to bidentate (T2)and tridentate(T3)types.Since there is no interference by DS anions in the AL-M system,most of the ethoxy groups of APS seem to form oxane bonds with hydroxyl groups.
采用固态29Si交叉极化魔角旋转(处长马航) NMR谱,我们证实,黄芪多糖基在债役对水滑石共价,最终形成了oxane债券(钼硅(男=锌和铬的LDH )活性) .此外,固态29Si处长核磁共振技术应用于评价的性质,莫硅债券在硅原子. Ť ñ批注例( 0,1,2,3 )是用来描述交联的程度取决于莫硅债券类型,总结在表2.Table 2显示29Si固态核磁共振峰转让的T ñ高峰先前所作及山顶阵地百万分之一(百万分之一) . [ 10 ]图3 , 29Si MAS NMR谱处长和相应的最小二乘适合的Al -米显示.实验频谱是由中央乐团及纺纱边指的阿斯特里克斯.中央乐团可以分解成若干个人山峰的模拟.通过光谱模拟,类型的oxane债券所附的硅烷基可确定.此外,相对比例的每种类型的oxane债券样品中黄芪多糖改性水滑石可确定其相对峰强度;这些结果的摘要列于表2 oxane债券所附表面的Al - M可以是主要原因以双齿(氚)和三齿(的T3 )类型.由于没有干涉德尚阴离子在Al - M系统,大多数乙氧基组黄芪多糖似乎形式oxane债券羟基.
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