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201楼2009-09-11 08:15:26

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有机会请教一下马博士如何做学问

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不是王子，也有自己国度，我在自己的世界独舞......

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<<在美国做博士后>>由科技导报"走向职场"栏目刊登.

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203楼2009-09-24 03:22:09

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第二作者文章发表

近一年前，一个访问学生到我们实验室访问。7个月的工作已经整出两篇文章，从做第一个实验到两篇文章（Langmuir, Microporous and Mesoporous Materials）全部在网上刊登，一年还不到。

我是两篇文章的第二作者和第二篇文章的共通讯联系人。

Surface Functionalization of Mesoporous Silica SBA-15 by Liquid-Phase Grafting of Zirconium Phosphate

Authors:
Jianan Zhang a, b, Zhen Ma a, Jian Jiao a, Hongfeng Yin a, Wenfu Yan b, Edward W. Hagaman a, Jihong Yu b and Sheng Dai a, ,

aChemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

bState Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P.R. China

Web Release Date:
Available online 24 September 2009.

DOI: http://dx.doi.org/10.1016/j.micromeso.2009.09.016

Abstract:

The introduction of mesoporous silicas in the 1990s has offered new opportunities for the engineering of ordered catalytic nanoreactors, but the acid properties of mesoporous silicas are rather poor. Herein, mesoporous silica (SBA-15) surfaces were functionalized by zirconium phosphate via two methods recently developed in our group. Zr(OPr)4 and POCl3 were used as appropriate precursors in both methods. The main difference between these methods lies in whether Zr(OPr)4 is grafted onto SBA-15 first and POCl3 second (method 1) or the grafting process takes place in one pot, with SBA-15, Zr(OPr)4, and POCl3 altogether (method 2). More zirconium phosphate could be grafted by repeating the above procedures. The materials were characterized by ICP-OES, XRD, N2 adsorption-desorption, TEM, 31P and 29Si MAS NMR, and NH3-TPD, and their applications in catalytic isopropanol dehydration, cumene cracking, and metal-ion adsorption were demonstrated. Aluminum phosphate-modified SBA-15 samples could be obtained via these two methods as well. This work enriches the family of metal phosphate-functionalized mesoporous silicas as new solid acid catalysts.

Link:
http://dx.doi.org/10.1016/j.micromeso.2009.09.016
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TH4-4X9FGYC-2&_user=10&_coverDate=09%2F24%2F2009&_alid=1023433955&_rdoc=7&_fmt=high&_orig=search&_cdi=5272&_sort=r&_docanchor=&view=c&_ct=7&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=059dc3f47e9646716b20737a22a59832

[ Last edited by zhenmafudan on 2009-9-25 at 08:43 ]

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