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ANALYTICAL INSTRUMENTATION
2015年
3期
23-25
,共3页
载担型铂催化剂%晶体物相鉴定%晶粒尺寸测定%粉末X射线衍射%X射线荧光光谱
載擔型鉑催化劑%晶體物相鑒定%晶粒呎吋測定%粉末X射線衍射%X射線熒光光譜
재담형박최화제%정체물상감정%정립척촌측정%분말X사선연사%X사선형광광보
supported platinum catalyst%crystalline phase identification%grain size measurement%powder X-ray diffraction%X-ray fluorescence spectrometry
采用粉末X射线衍射(PXRD)鉴定了一种载担型铂催化剂的晶体物相,并应用化学计量学峰形拟合法和Scherrer法计算了其中铂的晶粒尺寸。其主要物相鉴定结果为:铂(Pt)、氧化铝(γ‐Al2 O3)。Pt (111)晶面晶粒尺寸为10.4 nm。X射线荧光光谱(XRF)分析该催化剂中Pt的质量分数为0.25%。
採用粉末X射線衍射(PXRD)鑒定瞭一種載擔型鉑催化劑的晶體物相,併應用化學計量學峰形擬閤法和Scherrer法計算瞭其中鉑的晶粒呎吋。其主要物相鑒定結果為:鉑(Pt)、氧化鋁(γ‐Al2 O3)。Pt (111)晶麵晶粒呎吋為10.4 nm。X射線熒光光譜(XRF)分析該催化劑中Pt的質量分數為0.25%。
채용분말X사선연사(PXRD)감정료일충재담형박최화제적정체물상,병응용화학계량학봉형의합법화Scherrer법계산료기중박적정립척촌。기주요물상감정결과위:박(Pt)、양화려(γ‐Al2 O3)。Pt (111)정면정립척촌위10.4 nm。X사선형광광보(XRF)분석해최화제중Pt적질량분수위0.25%。
The crystalline phase in a supported platinum catalyst was identified by powder X‐ray dif‐fraction ,and the grain size of platinum was calculated by using chemometrics profile fitting and Scherrer method. The results indicated that the main phase was platinum (Pt) and alumina (γ‐Al2 O3 ). The grain size of Pt (111) was 10.4 nm. The content of Pt in the catalyst was analyzed by X‐ray fluorescence spec‐trometry ,and mass percentage of Pt was 0.25 %.