交联镓皂石表面酸性及催化性能的研究  

Studies on the Surface Acidity and Catalytic Properties of Pillared Ga-Substituted Saponite

作　　者：姜廷顺[1] 孙铁[1] 沈剑平[1] 蒋大振[1] 闵恩泽 

机构地区：[1]吉林大学化学系,北京石油科学研究院

出　　处：《高等学校化学学报》1994年第1期93-97,共5页Chemical Journal of Chinese Universities

基　　金：中国石油化学工业总公司基金

摘　　要：用水热法合成出两种不同镓含量的镓皂石，并用羟基铝低聚物对其进行了交联。对其表面酸性的考察发现，样品的酸量随镓含量的增加而增大；样品均含有Ｂ酸和Ｌ酸中心，交联样品的Ｂ酸中心比交联前少，对样品催化性能的研究发现，催化活性与镓含量及酸量呈顺变关系。Two Ga-substituted saponites with different amount of gallium were synthesized by hydrothermal method.The pillared clays were prepared by cross-linking with hydroxyl aluminium oligomer,The results show that the amount of acidity of the samples increases with that of gallium in the tetrahedral sheet,and both Brnsted and Lewis acid sites are present on the surfaces of the samples,and the B acid sites decrease after cross-linking with Al(13) oligomer.The studies on the catalytic properties show that the activity is correlative to the amount of gallium in the tetrahedral sheet.

关 键 词：交联镓皂石 表面酸性 裂解 催化 

分 类 号：TQ424.2[化学工程]