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Vphoenix

银虫 (小有名气)


[交流] 【求助】聚吡咯的制备

本人用H2O2(10%)制备聚吡咯,摩尔比过氧化氢:Py=1:1; 同时加入一定量的醋酸形成酸性环境,反应一段时间无产物,只得到黑色的溶液,是由于没有提供足够的阴离子而无法聚合吗?

先谢谢了!!!
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erylingjet

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小木虫(金币+0.5):给个红包,谢谢回帖
Polypyrrole (PPy) was prepared with the aid of FeCl3 as the
oxidant. In a typical synthesis, 3 g of pyrrole (recently distilled
under nitrogen) was added to a solution of FeCl3 (0.5 M,
200 mL) and the mixture was magnetically stirred for 2 h. The
formed polypyrrole was separated by filtration and abundantly
washed with distilled water and dried. The polypyrrole yield was
close to 100%. The chemical activation of polypyrrole was per-
formed by heating (at a ramp rate of 3 
C min1
) a KOH/PPy
mixture (at a KOH/PPy weight ratio of 2 or 4) under nitrogen to
a final temperature of between 600 and 850 
C for 1 h. The
activated samples were then thoroughly washed with 10 wt%HCl
to remove any inorganic salts, and then with distilled water until
neutral pHand then dried in an oven at 120 
C. The carbons were
denoted as CP-x-y, where x is the KOH/PPy weight ratio and y
the activation temperature (in 
C)
17楼2011-07-14 22:30:42
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