碱性助剂对加氢脱硫催化剂性质及活性的影响  

Effect of Alkaline Agent on Properties and Activity of Hydrodesulfurization Catalyst

作　　者：孙进[1] 郭蓉[1] 段为宇[1] 刘丽[1] 

机构地区：[1]中国石油化工股份有限公司抚顺石油化工研究院,辽宁抚顺113000

出　　处：《当代化工》2017年第10期2062-2065,共4页Contemporary Chemical Industry

摘　　要：选择了一种碱性有机盐作为助剂合成加氢脱硫催化剂,通过N2吸附-脱附、XRD、CO_2-IR、NH_3-TPD、原位CO-IR和模型化合物加氢及FCC汽油脱硫反应,表征评价了碱性助剂对催化剂性质及反应活性的影响。通过对比发现了由于生成部分微孔导致含助剂催化剂的比表面积有所提高,孔容、孔径有所下降。由于助剂的加入使催化剂具有一定量的碱性吸附位,原位CO-IR表征证实含碱性有机盐助剂催化剂在硫化过程中会更多生成CoMoS相。通过模型化合物加氢反应和工业FCC汽油脱硫反应证实含碱性有机盐助剂催化剂具有一定的加氢异构能力,其在FCC汽油脱硫反应中的选择性更好,更适用于生产高辛烷值汽油。The effect of adding alkaline agent on hydrodesulfurization catalyst was studied. The properties of catalysts were characterized by N2 adsorption-desorption, XRD, CO2-IR, NH3-TPD and in situ CO-IR. It was showed that the specific surface area of the catalyst after adding alkaline agent was improved and the pore volume and pore size were decreased due to the formation of partial micropores. Because of the addition of the alkaline agent, the catalyst obtained a certain amount of alkaline adsorption sites. In situ CO-IR characterization showed that the CoMoS phase of the catalyst after adding alkaline agent would be generated more during the sulfided process. The hydrogenation reaction of the model compound and the FCC gasoline desulfurization reaction confirmed that the catalyst after adding alkaline agent had hydroisomerization ability, and its selectivity in FCC gasoline desulfurization was better, and it was more suitable for the production of high octane gasoline.

关 键 词：碱性助剂 烯烃加氢 催化剂 加氢脱硫 

分 类 号：TE624.43[石油与天然气工程—油气加工工程]