钛铝复合氧化物载体的制备及其性能研究  

Preparation and performances of titamiun-aluminum bi-oxide carrier

作　　者：谢献娜 陈云峰 李晓云 于海斌 崔晓萌 

机构地区：[1]中海油天津化工研究设计院有限公司,天津300131 [2]中国石油吉林石化公司物资采购公司

出　　处：《无机盐工业》2018年第3期74-76,共3页Inorganic Chemicals Industry

摘　　要：以无机钛源和铝源为原料,采用共沉淀法制备出不同钛含量的钛铝复合氧化物,采用氮气吸附-脱附曲线、X射线荧光光谱(XRF)、X射线衍射(XRD)、热重分析(TG)、氨气程序升温吸脱附(NH3-TPD)、吡啶吸附红外光谱(Py-IR)、扫描电镜(SEM)等方法对其进行表征。结果表明,钛铝复合氧化物具有较大的比表面积和孔容,不同钛含量的钛铝复合氧化物均只有L酸,并且随着钛含量增加酸量逐渐减少、酸强度逐渐降低。二氧化钛中氧化铝的存在,提高了二氧化钛的晶型转变温度,从而提高了二氧化钛的热稳定性。Titamiun-aluminum bi-oxide w ith different Ti contents was prepared by co-precipitation with inorganic titamium source and aluminum source as raw materials.It was characterized by means of BET,XRF,XRD,TG,TPD,Py-IR,and SEM.The experimental results showed that titamiun-aluminum bi-oxide had high specific surface area and pore volume,and contained only Lewis acid site.The total acid content and the acid intensity of the titamiun-aluminum bi-oxide both decreased with the increasing amount of TiO_2 content.Because of Al_2O_3 in the complex,TiO_2 transformation temperature rose and thus its thermal stability improved.

关 键 词：钛铝复合氧化物 二氧化钛 氧化铝 

分 类 号：TQ134.1[化学工程—无机化工]