The relative crystallinity of ZSM-5 samples was calculated using a equation (Eq. (1)) from peak area of 2θ=8-29° in the XRD spectra, using a highly crystalline sample as reference.
Y=AP/AR (1)
Where:
Y is the relative crystallinity,
AP is the peak area of product,
AR is the peak area of reference sample.
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我也想知道
我们这边一般都是计算相对结晶度，方法是一系列样品，每个样品的XRD中五个特征峰的强度值相加，选择最大的作为百分百，其余的和它的比值就是相对结晶度。
计算相对结晶度，取一知道结晶度的样品作为标样，检测样品的XRD中五个特征峰的强度值相加与标样强度值相除相对结晶度。
怎么知道强度值啊？
做完XRD，不久会给出d、2theta和I值吗？ I值就是强度。无法讲结晶度如何，只能说是相对结晶度。
一般是计算相对结晶度，取未改性之前的沸石分子筛的结晶度为100％，检测样品的XRD中三到五个最高的特征峰的强度值相加与取作为100％的相对结晶度的样品的三到五个最高的特征峰的强度值相加做比较，得出要计算样品的相对结晶度。
The relative crystallinity of ZSM-5 samples was calculated using a equation (Eq. (1)) from peak area of 2θ=8-29° in the XRD spectra, using a highly crystalline sample as reference.
Y=AP/AR (1)
Where:
Y is the relative crystallinity,
AP is the peak area of product,
AR is the peak area of reference sample.
[ Last edited by ^_^@^_^ on 2008-6-19 at 15:07 ]，