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camy7685

金虫 (小有名气)

[交流] 【请教】这句话怎么理解? 已有2人参与

calcinedSBA-15 (SBA-50-100-C1) was impregnated with a solutionof cobalt nitrate

in ethanol stepwise until loadings of 15,18, and 24% Co3O4 relative to the total

pore volume of SBA-50-100-C1 (1.2 cm3g-1) were achieved. For example, in the

case of sample Co-Hex-100-24, 5.2 mL of a 0.8 M cobaltnitrate solution was added

to 200 mg of SBA-50-100-C1 inthree steps of impregnation, which corresponds to

21 mmolCo(NO3)2â6H2O per g of silica。
这是指等体积法浸渍吗?
24% Co3O4 relative to the total pore volume of SBA-50-100-C1 这句话怎么理解啊?
其中还说,三步浸渍完成,是指24%分三次浸渍呢,还是三次各浸渍24%呢?
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penguin1987

银虫 (小有名气)

camy7685(金币+1):我也是这么理解的 2010-05-15 11:13:22
指做3次,Co3O4 负载量分别为15.18.24.
好像没说等体积浸渍吧,
5.2 mL of a 0.8 M cobaltnitrate solution was added

to 200 mg of SBA-50-100-C1 inthree steps of impregnation,
这句话意思我觉得是:将5.2ml 硝酸钴分3次加入吧。
2楼2010-05-15 10:52:49
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冷冰雨

银虫 (小有名气)

camy7685(金币+1):O(∩_∩)O谢谢 2010-05-23 16:22:24
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3楼2010-05-15 16:14:02
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