两种工业用Al_2O_3吸附剂的结构和性质的研究  

Studies on the Structure and Properties of Two Aluminas Used as Industrial Adsorbent

作　　者：穆布尔威 陈绍洲[1] 王贵山[2] 徐慧珍[2] 

机构地区：[1]华东理工大学石油加工研究所 [2]浙江工学院

出　　处：《华东化工学院学报》1993年第6期686-690,共5页

摘　　要：对用于净化对苯二甲酸生产中循环氮气的氧化铝吸附剂G(德国制)和W(国产),进行了结构和性质的研究。根据经不同温度熔烧的样品的X光衍射图,确定G的主要物相为η-Al_2O_3,混有少量薄水铝石;W的主要物相为薄水铝石,混有少量拟薄水铝石。这一结论又通过再水合后样品的X光衍射图得到肯定。这两种氧化铝吸附剂在孔结构,表面性质和吸附性能上都显示出明显的差别。故在应用时不宜轻易互换替代。Two alumina samples, G and W, are used as industrial adsorbents for purification of reused nitrogen in TPA units. Alumina G is made in Germany and alumina W is made in China. The results from X-ray diffraction data of two series of samples calcined at different temperature show that the crystal structure of alumina G is η-Al_2O_3 with a little beohmite and the crystal structure of alumina W is beohmite with a little pseudo-beohmite, The rehydration of two samples is employed to help distinguish between γ-and η-Al_2O_3. The differences are observed between two samples in pore structure, surface properties and adsorption behavior. Alumina W should be regarded as a different kind sample from alumina G. In application, it should be careful in replacement of alumina G by alumina W.

关 键 词：氧化铝 吸附 晶体结构 孔分布 酸性 

分 类 号：TQ424.2[化学工程]