石油化工高等学校学报2017，Vol.30Issue(3)：9-14,6.DOI:10.3969/j.issn.1006-396X.2017.03.002
稀土离子半径对Y分子筛抗Ni性能的影响
Effect of Rare Earth Ion Radius on Nickel Tolerance of Y Zeolites
摘要
Abstract
CeY,NdY and HoY zeolites were prepared by liquid phase ion exchange method,and the Ni contamination was carried out by Mitchell impregnation method.The acid properties of the catalysts were characterized by ammonia temperature programmed desorption (NH3-TPD) and in situ pyridine infrared spectroscopy.The results indicate that REY zeolite has a better ability to inhibit the destruction of the Br(o)nsted (B) acid sites with the decrease of the radius of rare earth ions.Further acidity and activity were associated,it was found that the catalytic cracking activity of REY zeolite was increased with the decrease of the radius of RE.And the content of gasoline in the reaction liquid phase increased with the decrease of the radius of RE ions in Ni/REY zeolite catalyst.So the smaller the RE ionic radius,the better the nickel tolerance of REY zeolite.关键词
REY/离子半径/酸性/微反应活性/抗Ni性能Key words
REY/Ionic radius/Acidity/MAT/Nickel tolerance分类
化学化工引用本文复制引用
杨野,秦玉才,张乐,宋丽娟..稀土离子半径对Y分子筛抗Ni性能的影响[J].石油化工高等学校学报,2017,30(3):9-14,6.基金项目
国家自然科学基金(21376114、U1662135). （21376114、U1662135）
