摘要
In this work,HY zeolites were embedded in the ordered mesoporous carbon(OMC)to prepare a support for a noble metal catalyst Pt/OMC-HY,and the hydrogenation of naphthalene to decalin was carried out over the catalyst.The results showed that Pt/OMC-HY-0.14(in which the mass ratio of HY to phenolic resin oligomer is 0.14)possessed much better catalyst performance than Pt/OMC,which was related to its proper surface acidity,hierarchical pore structure,metal dispersion,and the interaction between metal and support.Furthermore,Pt/OMC-HY-0.14 had better sulfur tolerance than Pt/OMC.In addition,the sulfur tolerance mechanism of Pt/OMC-HY-0.14 was studied,which revealed that the competitive adsorption of DBT on the metal sites with aromatics was the main reason for catalyst deactivation,and the improvement of sulfur tolerance could be achieved by the aid of the acidity of HY zeolite.Based on the acidity,the hydrogenation of DBT can be promoted obviously,and consequently the competitive adsorption of DBT on the metal sites can be reduced.
In this work, HY zeolites were embedded in the ordered mesoporous carbon(OMC) to prepare a support for a noble metal catalyst Pt/OMC-HY, and the hydrogenation of naphthalene to decalin was carried out over the catalyst. The results showed that Pt/OMC-HY-0.14(in which the mass ratio of HY to phenolic resin oligomer is 0.14) possessed much better catalyst performance than Pt/OMC, which was related to its proper surface acidity, hierarchical pore structure, metal dispersion, and the interaction between metal and support. Furthermore, Pt/OMC-HY-0.14 had better sulfur tolerance than Pt/OMC. In addition, the sulfur tolerance mechanism of Pt/OMC-HY-0.14 was studied, which revealed that the competitive adsorption of DBT on the metal sites with aromatics was the main reason for catalyst deactivation, and the improvement of sulfur tolerance could be achieved by the aid of the acidity of HY zeolite. Based on the acidity, the hydrogenation of DBT can be promoted obviously, and consequently the competitive adsorption of DBT on the metal sites can be reduced.
基金
supported by the Program for Liaoning Excellent Talents in University, abbreviated as ‘LNET’ (LJQ2015062)
the Program for Science and Technology Agency of Liaoning Province (20170540585)
the General Scientific Research Project of Liaoning Provincial Department of Education (L2015296, L2016018)
the Science and Technology Planning Project of Fushun (FSKJHT201376)
