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jiaowin200

新虫 (小有名气)

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现在zsm-5的杂原子的参杂是在合成的时候加入 还是在合成后加入啊?
11楼2009-10-29 23:08:04
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zhutuetit

铁虫 (初入文坛)

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小木虫(金币+0.5):给个红包,谢谢回帖交流
nxl5096224(金币+3,VIP+0):谢谢回帖交流 11-16 20:28
long time no read the papers, but you can try

E.J.M. Hensen, Q. Zhu, R.A. van Santen, Selective oxidation of benzene to phenol with nitrous oxide over MFI zeolites. 2. On the effect on the iron and aluminum content and the preparation route, J. Catal., 233(1), 136-146, (2005)

E.J.M. Hensen, Q. Zhu, R.A.J. Janssen, P.C.M.M. Magusin, P.J. Kooyman, R.A. van Santen, Selective oxidation of benzene to phenol with nitrous oxide over MFI zeolites: 1. On the role of iron and aluminium, J. Catal., 233(1), 123-135, (2005)

E.J.M. Hensen, Q. Zhu, R.A. van Santen, Extraframework Fe-Al-O species occluded in MFI zeolite as the active species in the oxidation of benzene to phenol with nitrous oxide, J. Catal., 220(2), 260-264, (2003)

To my knowledge, Chemical vapor deposition is the most effecient method to introduce Fe into the micropores of the MFI zeolites, but the formation of Fe oxides are hardly avoided, particularly in the calcination step. Other methods end up with the majority of the hematite in the external surface of MFI zeolites. There are tons of papers in the field of Fe/ZSM-5 after the paper of Chen haiying and Sachtler in 1997.
12楼2009-10-31 08:03:20
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新雨

至尊木虫 (著名写手)

另外,想请教各位一个问题:我用模板剂合成的ZSM-5在晶化之后非常粘,象凝胶一样。干燥之后很硬,非常难研成粉末。不知道这是为什么?各位高人能否指点一二。
谢谢!
13楼2009-11-16 11:12:52
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