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yutm63

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图2为有机腈改性前后的MCM-41分子筛及固载PdCl2催化剂的UV-VIS谱图,由于有机腈配体中含有π键,并同时含有N上的非键电子对,因此易在紫外区观测到n→π*跃迁产生的吸收。

[ Last edited by yutm63 on 2009-8-13 at 08:47 ]
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hhzx5102

银虫 (正式写手)

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yutm63(金币+3,VIP+0):谢谢 8-19 10:11
figure 2 showed the  UV-VIS spectrograms of MCM-41 molecular sieve for-and-after organic-nitrile modification and solid carrier PdCl2 catalyst, it is easy to observe the absorption yields by n-n* transition at ultraviolet region, because organic-nitrile ligand has n bond, meanwhile it has nonbonding electron pair on N

[ Last edited by hhzx5102 on 2009-8-13 at 09:13 ]
2楼2009-08-13 08:57:43
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monitor2885

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yutm63(金币+3,VIP+0):谢了 8-19 10:11
图2为有机腈改性前后的MCM-41分子筛及固载PdCl2催化剂的UV-VIS谱图,由于有机腈配体中含有π键,并同时含有N上的非键电子对,因此易在紫外区观测到n→π*跃迁产生的吸收。

Fig.2 shows the MCM-41 molecular sieve modified before and after of organic nitrile and UV-VIS spectrum of solid-carried PdCl2 catalyst. As a result of organic ligands containing nitrile π bond and N non-bonding electron pairs, absorption caused by n → π * transition can be easily observed in ultraviolet ray range.
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