Effect of PEG on the Structure and Hydrodesulfurization Performance of Unsupported Ni-Mo Catalyst
Abstract: The unsupported hydrotreating catlyst has high hydrogenation activity owing to its high metal content. While the metal active phase over the unsupported catalyst is easy to gather, and then reduces its dispersion during the proc-ess of hydrothermal synthesis, which affects the activity of the catalyst. The non-ionic water-soluble polymer polyeth-ylene glycol (PEG) was adopted as additives to increase the dispersion of the unsupported catalyst, and the effect of PEG on the crystal structure, pore structure and surface morphology of the catalyst was examined. The activities of the catalysts were evaluated by hydrotreating dibenzothiophene (DBT) and fluid catalytic cracking (FCC) diesel. The analysis results from SEM and HRTEM showed that after adding PEG, many vesicles were formed between the catalyst grains which greatly improved the metal dispersion. At the same time, the catalyst particles surface was more porous which increased the number of the active sites exposed to reactant. The activity evaluation results revealed that the ad-dition of PEG could obviously improve the HDS activity of the unsupported Ni-Mo catalyst.
文章引用: 殷长龙 , 白振江 , 赵蕾艳 , 张俊萍 , 刘晨光 (2013) 聚乙二醇对非负载型Ni-Mo催化剂结构及加氢脱硫性能的影响。 化学工程与技术， 3， 208-214. doi: 10.12677/HJCET.2013.36038
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