详细信息
SiO_2含量对钛/硅复合氧化物聚酯催化剂性能的影响
The Effect of Silica on Catalytic Properties of Titania/Silica Mixed Oxides in Preparation of Poly (ethylene terephthalate)
文献类型:期刊文献
中文题名:SiO_2含量对钛/硅复合氧化物聚酯催化剂性能的影响
英文题名:The Effect of Silica on Catalytic Properties of Titania/Silica Mixed Oxides in Preparation of Poly (ethylene terephthalate)
作者:杨景辉[1];孔凡滔[1];马新胜[1]
机构:[1]华东理工大学国家超细粉末工程研究中心,上海200237
年份:2007
卷号:21
期号:6
起止页码:515
中文期刊名:分子催化
外文期刊名:Journal of Molecular Catalysis(China)
收录:CSTPCD;;Scopus;北大核心:【北大核心2004】;CSCD:【CSCD2011_2012】;
基金:上海市青年科技启明星计划(04QMX1478);上海市科委科技攻关计划(055211009)资助项目.
语种:中文
中文关键词:钛/硅催化剂;缩聚;聚对苯二甲酸乙二醇酯
外文关键词:Titania/Silica; Polycondensation ; Poly ( ethylene terephthalate)
摘要:研究了钛/硅复合氧化物聚酯催化剂中,二氧化硅含量对聚对苯二甲酸乙二醇酯缩聚反应的影响.催化剂XRD谱图表示,增加二氧化硅含量会抑制二氧化钛的结晶.随着二氧化硅含量的增加,钛/硅催化剂表面Lewis酸的数目和强度都减小.比表面积和Lewis表面酸性都会影响钛/硅催化剂的活性.
The effect of silica on catalytic properties of Titania/Silica Mixed Oxides in Preparation of Poly ( ethylene terephthalate) was investigated. The X-ray diffraction pattern showed that the addition of silica to titania restrained the crystallization of titania. The amount and strength of Lewis acid of titania/silica decreased with increase of content of silica. Both Specific surface area and surface Lewis acid had an effect on catalytic activity of titania/silica.
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