中文摘要：

采用晶种法在极浓体系中,快速合成了L/EU-1复合分子筛,通过XRD、SEM、NH3-TPD、TG-DTG等多种手段对其进行了表征.结果表明：随原始溶胶中添加硼和铁的质量分数的增加,复合分子筛中L分子筛的特征衍射峰分别向高角度和低角度方向发生偏移,L分子筛的晶胞参数和晶胞体积分别有所减小和增加;含硼和铁的L/EU-1复合分子筛尺寸大小长约为0.5-3μm,宽0.2-1μm,形貌为小颗粒聚集L分子筛附着生长管状镶嵌结构复合分子筛;镶嵌结构改变了复合分子筛的酸性、稳定性和孔道性质.影响因素分析表明,碱硅比低时,K^＋对促进钙霞石笼的形成起主导作用,碱硅比高时,K^＋对溶胶的聚沉起主导作用.

英文摘要：

L/EU-1 composite zeolites were synthesized rapidly by the method of crystal seed in extremely dense system,the synthetic samples were characterized by XRD,SEM,NH3-TPD,TG-DTG and so on. The results showed that with increasing the mass fraction of boron and iron in the original sol,the characteristic diffraction peaks of L in the composite zeolites migrated to higher angle and lower angle direction,respectively. The cell parameters and cell volume of L zeolite were decreased and increased,respectively. L / EU-1 composite zeolites contains boron and iron 0.5 - 3 μm long,width of 0.2 - 1 μm and they have the characteristics of small particle aggregation L zeolite attachment growth with the tubular mosaic structure. The mosaic structure changed the acidity,stability and pore properties of the composite zeolites. When n（ K2O）/n（ SiO2） is low,K^＋ plays a leading role in promoting the formation of cancrinite cages. When n（ K2O） / n（ SiO2） is high,K^＋ plays a dominating role in coaglulation of sol.