利用高岭土合成ZSM-5沸石  

Synthesis of ZSM-5 zeolite with kaoline

作　　者：戴泳[1] 罗一斌[2] 王殿中[2] 

机构地区：[1]中国石化催化剂建长分公司,湖南岳阳414012 [2]中国石化石油化工科学研究院,北京100083

出　　处：《工业催化》2011年第3期57-62,共6页Industrial Catalysis

摘　　要：对苏州高岭土的特性以及不同温度焙烧的高岭土结构变化进行了考察,以碱抽法确定其中的活性SiO_2和活性Al_2O_3的含量,分别以有胺法(正丁胺)和无胺法合成得到较高相对结晶度的ZSM-5沸石,并对产物进行表征。结果表明,高岭土最佳焙烧温度为950℃,有胺法和无胺法合成的ZSM-5沸石相对结晶度分别达54.6%和53.3%,产物中出现大量的(3～7)nm中孔孔道,是由高岭土表面活性SiO_2和Al_2O_3解聚留下的空穴形成。The properties of Suzhou kaoline and the structure change of the kaoline calcined at different temperature were investigated.The contents of active SiO2 and Al2O3 of kaoline were determined by extraction test with alkali.ZSM-5 zeolites with higher relative crystallinity were synthesized by the methods with and without n-butylamine（NBA） and characterized by XRD,SEM and MAS NMR,etc.The results showed that the optimal calcination temperature of the kaoline was 950 ℃;the relative crystallinity of the kaoline synthesized with and without NBA reached 54.6% and 53.3%,respectively;a lot of （3～7） nm mesopores in the products appeared,due to the formation of the cavities leaved by solution of active SiO2 and Al2O3 from kaoline surface.

关 键 词：催化剂工程 高岭土 ZSM-5沸石 合成 

分 类 号：TQ426.6[化学工程] TQ424.25