介微孔HY/MCM-41复合分子筛的合成及应用  

Synthesis and application of mesoporous and microporous HY/MCM-41 composite zeolites

作　　者：马守涛 田然 戴宝琴[1] 孙发民 秦丽红 

机构地区：[1]中国石油石油化工研究院大庆化工研究中心,黑龙江大庆163714 [2]中国石油大学(北京)重质油国家重点实验室,北京102249

出　　处：《工业催化》2009年第6期22-26,共5页Industrial Catalysis

摘　　要：以微孔HY浆液为母液,合成了介-微孔复合分子筛HY/MCM-41。通过XRD、BET和NH_3-TPD等手段对复合分子筛进行表征,并考察其水热稳定性。结果表明,复合分子筛同时具有中孔分子筛MCM-41和微孔HY型沸石的特点,与纯MCM-41分子筛相比,酸性明显增强,水热稳定性提高。利用一段串联加氢裂化工艺,考察了复合分子筛的催化性能。200mL固定床加氢装置评价结果表明,在控制原料>350℃馏分油转化率为75%的条件下,加氢裂化生成油C_5^+液收98.51%,最大量柴油馏分[(140～370)℃]收率69.09%,<370℃中馏分油选择性80.5%,能满足工业装置最大量生产柴油的需要。A new meso-and microporous HY/MCM-41 composite molecular sieve was prepared using microporous HY zeolite as the mother liquor and characterized by XRD,BET and NH_3-TPD,and its hydrothermal stability was also investigated.The results showed that the composite zeolite exhibited the properties of both mesoporous MCM-41 and microporous HY,with stronger acidity and higher hydrother- real stability than that of pure mesoporous MCM-41.Catalytic behaviors of the composite zeolite were in- vestigated on a 200 mL fixed-bed hydrogenation apparatus,with C_5^+ liquid yield of 98.51 wt%,diesel distillate yield of 69.09wt% and selectivity to middle distillates of 80.5% under controlled >350 ℃ feed distillate conversion of 75%,which met the requirement on maximum diesel distillate yield in oil refinery.

关 键 词：催化化学 中馏分油 复合分子筛 催化性能 

分 类 号：TQ426.65[化学工程] TE624.4+32[石油与天然气工程—油气加工工程]