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wenhl

铜虫 (小有名气)

[交流] 求助催化剂的TOF表征

请问TOF怎么测量  怎么计算呀
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一1

金虫 (小有名气)

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nxl5096224(金币+2,VIP+0):3Q! 3-5 18:30
TOF -turnover frequency.
The turnover frequency (the term was borrowed from enzyme catalyst) quantifies the specific activity of a catalyst center for a special reaction under defined reaction conditions by the number of molecular reactions or catalyst cycles occurring at the center per unit time.
In practice, the experimentally determined volumetric rate of reaction [moles/volume/time] is divided by the number of centers [moles/volume] yielding the TOF.

Defination from Catalysis from A to Z- a Concise Encyclopedia.

顺便说一下:TOF是根据实验结果计算得到的,不应该是表征得到的。

[ Last edited by 一1 on 2009-3-6 at 09:27 ]
2楼2009-03-05 11:18:23
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