低碳化学与化工2026，Vol.51Issue(4)：38-48,11.DOI:10.12434/j.issn.2097-2547.20250208
沸石分子筛路易斯酸位点的构建、失活及稳定化研究进展
Research progress on construction,deactivation and stabilization of Lewis acid sites in zeolite molecular sieves
摘要
Abstract
Precise construction of Lewis acid sites(LAS)in zeolite molecular sieves is one of the important strategies to improve their catalytic activity.However,problems such as water induction,poisoning,carbon deposition and skeleton collapse in actual reactions can lead to the destruction and deactivation of LAS.The construction methods,deactivation mechanisms and stabilization strategies of LAS were systematically reviewed.LAS can be efficiently constructed by framework de-alumination(hydrothermal and acid treatment),metal ion doping and defect engineering,and their catalytic activity originates from the electron-deficient property of the coordinating unsaturated metal center.However,LAS are prone to coordination saturation with water molecules,high-temperature hydroxyl condensation,carbon deposition,and cation dissolution during the reaction process,leading to acid strength decay and structural collapse,resulting in deactivation.Current LAS stabilization strategies focus on:(1)Hydrophobic modification(increasing silica-aluminium ratio(molar ratio),surface functionalization)to inhibit hydrolysis;(2)Structural reinforcement(metal ion doping,preparation of physical protective layer and construction of high-entropy alloys)to delay the migration of aluminium species;(3)Hierarchical pore construction to enhance the anti carbon deposition performance;(4)LAS regeneration.Above strategies play an important role in stabilizing LAS.In the future,with the continuous development of characterization technologies and catalyst preparation technologies,researchers can accurately analyze the mechanisms of LAS deactivation and construct atomic level anti-deactivation sites.关键词
沸石分子筛/路易斯酸位点/疏水改性/结构强化/多级孔构建Key words
zeolite molecular sieves/Lewis acid sites/hydrophobic modification/structural reinforcement/hierarchical pore construction分类
化学化工引用本文复制引用
贾伯阳,柳蒙蒙,岳宣宇,崔燕冉,陈亚松..沸石分子筛路易斯酸位点的构建、失活及稳定化研究进展[J].低碳化学与化工,2026,51(4):38-48,11.基金项目
中国长江三峡集团有限公司科研项目资助(NBWL202200489) （NBWL202200489）
国家资助博士后研究人员计划(GZC20241500). （GZC20241500）
