高硅铝比NaY分子筛的合成  

Synthesis of NaY molecular sieve with high ratio of Si/Al

作　　者：顾建峰[1] 崔楼伟[1] 王新星[1] 袁忠勇[2] 

机构地区：[1]西北化工研究院,陕西西安710600 [2]南开大学化学学院新催化材料科学研究所,天津300097

出　　处：《工业催化》2012年第1期34-38,共5页Industrial Catalysis

基　　金：陕西省科技计划(2011K08-03)

摘　　要：采用动态水热晶化法,利用工业原料不加模板剂直接合成高硅铝比的NaY分子筛,制备的NaY分子筛的硅铝物质的量比稳定在5.85～6.05,相对结晶度大于85%。考察了导向剂陈化时间及温度、体系碱度、预晶化温度及时间等对合成的NaY分子筛硅铝比和结晶度的影响,提出制备高硅NaY的最佳合成条件。Using commercial raw materials, NaY molecular sieves with high Si02/A1203 ratio and high crystallinity were directly synthesized by hydrothermal crystallization method. NaY molecular sieves with Si02/A1203 molar ratio of 5.85 -6.05 and relative crystallinity of over 85% were attained. The influence of aging time and temperature of the seed-gel, the alkalinity of the initial gel and pre-crystallization tem- perature and time on SiO2/AI203 ratio and relative crystallinity of NaY molecular sieves was investigated. The optimal synthesis condition of high-silica NaY molecular sieves was proposed.

关 键 词：催化剂工程 NAY分子筛 硅铝物质的量比 直接合成法 预晶化 

分 类 号：TQ426.65[化学工程] TQ424.25