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sunefy

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[求助] 浸渍法制备La/USY催化剂的均匀问题

我想用浸渍法(等体积浸渍、过量浸渍都可以)在USY分子筛上负载硝酸镧,有三个问题。
1应该采取什么方法使硝酸镧分布的更均匀?
2应该浸渍多长时间?
3在多大尺度上,可以认为催化剂是均匀的?(因为本人的实验装置最多只能装填100mg催化剂)
谢谢您!

[ Last edited by sunefy on 2011-5-9 at 21:32 ]
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zyhou

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【答案】应助回帖

sunefy(金币+2): 2011-05-27 09:38:47
浸渍法可能很困难,我试过离子交换,效果还可以,有表征结果!

Applied Catalysis A: General 304(1) (2006-5-10) 49-54.
Fuel, 86(17-18) (2007-12) 2707-2713.
2楼2011-05-10 11:03:19
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sunefy

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引用回帖:
Originally posted by zyhou at 2011-05-10 11:03:19:
浸渍法可能很困难,我试过离子交换,效果还可以,有表征结果!

Applied Catalysis A: General 304(1) (2006-5-10) 49-54.
Fuel, 86(17-18) (2007-12) 2707-2713.

您讲的浸渍法困难是那个方面困难?我看有的文献,如
:JOURNAL OF MOLECULAR CATALYSIS A:CHEMICAL
250(2006)50-56
用HY浸渍硝酸镧,并测试原位红外,催化剂用量很少——15mg/cm2,他们不用考虑均匀性问题么。
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3楼2011-05-11 10:48:25
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