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316612838

铁杆木虫 (正式写手)


[交流] 请教:根据XRD如何计算Pd纳米粒子大小!!!

如以上标题:
For fig 2, the Pd particle size should be calculated. On the other hand, if the Pd particle size was 4 nm, as determined by TEM, the Pd peak in XRD pattern should be broad. However, in fig 2, the peak of Pd particles is quite sharp.

请教:根据XRD如何计算Pd纳米粒子大小???
还有就是Pd纳米粒子的大小跟XRD中峰的窄宽有什么联系???
还请各位大侠给以指教!
谢谢!
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polypolymer

金虫 (著名写手)


316612838(金币+1): 2011-02-13 20:30:32
引用回帖:
Originally posted by 316612838 at 2011-02-13 19:04:22:
如以上标题:
For fig 2, the Pd particle size should be calculated. On the other hand, if the Pd particle size was 4 nm, as determined by TEM, the Pd peak in XRD pattern should be broad. However, i ...

For fig 2, the Pd particle size should be calculated. On the other hand, if the Pd particle size was 4 nm, as determined by TEM, the Pd peak in XRD pattern should be broad. However

[ Last edited by polypolymer on 2011-2-14 at 08:26 ]
2楼2011-02-13 19:12:33
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316612838

铁杆木虫 (正式写手)


怎么没人回答我的话题啊
我先顶一下!!!
3楼2011-02-13 19:12:35
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tangbohejin

木虫之王 (文学泰斗)


316612838(金币+2): 2011-02-13 20:30:23
钯在载体上的量小于5%时基本上看不到它的峰----
4楼2011-02-13 19:35:48
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rizhichen

金虫 (正式写手)


316612838(金币+3): 2011-02-13 20:30:16
XRD中可以根据谢乐公式计算晶粒大小。如果峰很尖锐的话,晶粒应该比较大。
5楼2011-02-13 20:23:38
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316612838

铁杆木虫 (正式写手)


补充一下我的催化剂中钯在载体上的含量为8.45%!!!
而且出现的Pd峰还挺尖的!

请问XRD中谢乐公式计算晶粒大小的方程式是???
在哪可以找到?
谢谢!!!
6楼2011-02-13 20:30:04
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rizhichen

金虫 (正式写手)


316612838(金币+1): 2011-02-13 21:34:01
到baidu网上找一下吧,很多,粒径主要与半峰宽有关。
7楼2011-02-13 20:37:11
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