吉林大学学报（理学版）Issue(6)：1342-1348,7.DOI:10.13413/j.cnki.jdxblxb.2014.06.45
Pd 掺杂方式对 Pt/KL 分子筛正己烷芳构化及抗硫性能的影响
Influence of Doping Methods of Palladium on n-Hexane Aromatization and Sulphur-Resistance of Pt/KL Zeolite
摘要
Abstract
Through impregnation and hydrothermal synthesis method,another metal Pd was doped into the Pt/KL catalyst to carry on the modification.The results show that two different ways of introducing Pd have little effect on the crystal structure and pore size distribution of the molecular sieve,but have relatively remarkable influence on its surface acidity.In the fixed-bed micro-reactor, the influences of Pd doping methods on the Pt/KL catalyst activity of n-hexane aromatization and sulfur resistance performance were investigated.The results show that the impregnation method of doping metal Pd can bring more improvement of n-hexane aromatization reactivity,selectivity of aromatic hydrocarbon and sulfur resistance than the hydrothermal method.The analysis indicates that the Pt-Pd/KL catalyst prepared by impregnation enhances metallicity via interaction of Pd and Pt, hence enhances the aromatization activity and sulfur resistance;while Pd in the Pt/Pd KL catalysts prepared by hydrothermal synthesis method enhances the acidity of the catalyst and reduces the aromatization activity and sulfur resistant ability of the catalyst.关键词
钯/铂/KL 分子筛/芳构化/抗硫中毒Key words
palladium/platinum/KL zeolite/aromatization/sulphur-resistance分类
化学化工引用本文复制引用
万海,张小雨,张若杰,宋丽娟..Pd 掺杂方式对 Pt/KL 分子筛正己烷芳构化及抗硫性能的影响[J].吉林大学学报（理学版）,2014,(6):1342-1348,7.基金项目
国家自然科学基金(批准号:21076100) （批准号:21076100）
