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制备工艺对无模板剂ZSM-5催化剂结构的影响

Petrochemical Technology & Application(2010)

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Abstract
采用水热合成法制备了无模板剂的ZSM-5催化剂,并用X射线衍射(XRD)仪和傅里叶变换红外光谱(FTIR)仪对其结构进行了表征,考察了制备工艺对无模板剂ZSM-5结构的影响。结果表明,无模板剂ZSM-5最佳制备工艺条件为:在45℃老化48h,并在190℃晶化73h。在此条件下制备的ZSM-5相对结晶度为96.82%。经600℃焙烧后,无模板剂ZSM-5的骨架未坍塌,但ZSM-5特征峰强度降低,而有模板剂ZSM-5的骨架结构发生了变化。
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Key words
template,time,ZSM-5,calcining,crystallization,catalyst,temperature
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