邵凡,黄文斌,郭丰志,杨晗,许振,黄萌,田宇萌,周亚松,王刚,魏强

• 1:中国石油大学(北京)重质油全国重点实验室

摘要(Abstract)：

为了考察晶种陈化温度与Y分子筛晶粒尺寸的影响关系,定向合成了系列纳米级小晶粒Y分子筛(439、249、522 nm),采用等体积浸渍法负载Pt,制备了系列Pt/(Y+ASA)加氢裂化催化剂。选择正二十二烷作为模型化合物、费托蜡作为真实油品评估系列催化剂的加氢裂化性能,通过一系列表征方法对分子筛的织构性质、酸性质和相应催化剂的理化性质表征分析。结果表明,适度的低温陈化温度(20℃)下Y分子筛晶粒尺寸最小,n(SiO_2/Al_2O_3)比最大(4.62),总酸密度(741.3μmol·g~(-1))和B酸密度(204.0μmol·g~(-1))最小,比表面积最大(694 m~2·g~(-1))。金属-载体相互作用的减弱也使得Pt的还原性和分散度提高。对正二十二烷和费托蜡的加氢裂化反应结果表明,0.3Pt/(Y_(20-24)+ASA)催化剂上C9-C17产物收率和选择性最高分别为26.2%和30.7%、19.07%和30.16%,提高了中间馏分油(C9-C17)的收率和选择性,展现出其在费托蜡加氢裂化制航煤的应用潜力。

关键词(KeyWords)： Y分子筛;晶粒尺寸;加氢裂化;正二十二烷;中油选择性;费托蜡

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划（2022YFA1503400）

作者(Author): 邵凡,黄文斌,郭丰志,杨晗,许振,黄萌,田宇萌,周亚松,王刚,魏强

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