A novel concept in the development of sulfurtolerant hydrogenation catalysts
This paper presents a novel approach to preparing sulfurtolerant noble metal catalysts and the proof- of-concept experimental results. Our approach combines the concepts of shape selectivity and hydrogen spillover to design sulfurtolerant catalysts. Platinum particles were encapsulated in the KA-zeolite cages that subsequently had their pore diameters reduced to allow hydrogen molecules to enter but prevent hydrogen sulfide molecules from contacting platinum particles. A sulfur-tolerant catalyst was prepared by mixing Pt/KA-zeolite with Y zeolite, and tested it in the hydrogenation of naphthalene. Hydrogen species produced via dissociative adsorption of hydrogen molecules on platinum particles, situated inside KA-zeolite cages, migrated through surface diffusion to Y-zeolite. Our experimental data demonstrated that the encapsulated platinum particles continuously generated hydrogen surface species that were used to hydrogenate naphthalene adsorbed on Y-zeolite and these platinum particles showed resistance to sulfur poisoning.
HONG YANG ZBIGNIEW RING
The National Centre for Upgrading Technology, 1 Oil Patch Drive, Devon, AB T9G 1A8 Canada The National Centre for Upgrading Technology, 1 Oil Patch Drive, Devon, AB T9G 1A8 Canada
国际会议
首届世界重油大会(The Technical Sessions of the First World Heavy Oil Conference)
北京
英文
843-846
2006-11-12（万方平台首次上网日期，不代表论文的发表时间）