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loser_zhu

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A clear indication of the presence of strong Bronsted siteson AU sample is the presence of an intense signal at ca. 1640 cm-1 after desorption at 400℃. In addition to this, the shape of the TPD profile in Fig. 4 (high temperature signal) is a clear indication that this sample features the strongest Bronsted acid sites of the series.
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wxh578

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爱与雨下(金币+1): 欢迎常来~! 2011-08-21 10:09:56
引用回帖:
1楼: Originally posted by loser_zhu at 2011-08-21 08:23:43:
A clear indication of the presence of strong Bronsted siteson AU sample is the presence of an intense signal at ca. 1640 cm-1 after desorption at 400℃. In addition to this, the shape of the TPD pr ...

隔行如隔山,看看是这个意思么?

在400C°高温情况下通过1640 cm-1 吸收表征~~~能明确显示强质子酸在AU 样本上的位置。而且,表4中的 TPD 形状(高温~~)明确显示该样本突出了最强质子酸在系列中的位置
好好学习,天天向上!
4楼2011-08-21 10:05:14
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wxh578

金虫 (著名写手)

siteson AU sample 应该是 sites on 吧?
ca. 1640 cm-1 是什么呢?太专业了
好好学习,天天向上!
2楼2011-08-21 09:30:21
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爱与雨下

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引用回帖:
2楼: Originally posted by wxh578 at 2011-08-21 09:30:21:
siteson AU sample 应该是 sites on 吧?
ca. 1640 cm-1 是什么呢?太专业了

ca. 1640 cm-1 为about 1640 cm-1
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3楼2011-08-21 09:37:16
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hongliannu

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loser_zhu(金币+20, 翻译EPI+1): 2011-08-21 15:26:33
400℃解吸附后在1640cm-1出现的强烈信号,清楚地表明AU样品的布朗酸性位。另外,图4(高温信号)中TPD曲线的形状清楚表明在这一些列样品中该样品具有最强的布朗酸性位特征。
5楼2011-08-21 11:03:13
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