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Simultaneous Removal of Sulfides and Benzene in FCC Gasoline by in situ Hydrogenation over NiLaIn/ZrO2-r-Al2O3
Journal of Hazardous Materials ( IF 13.6 ) Pub Date : 2017-09-06 , DOI: 10.1016/j.jhazmat.2017.09.003
Lei Wang , Qian Liu , Chunyu Jing , Jiajia Yin , Nchare Mominou , Shuzhen Li

The ZrO2-r-Al2O3 composite was developed and co-modified with nickel, lanthanum and indium species by the impregnation method. A fixed-bed reactor was utilized to investigate the activity of the resulting catalysts in the removal of sulfides and benzene in fluid catalytic cracking gasoline. The resultant samples were characterized using XRD, TEM, XPS, TGA, H2-TPR, NH3-TPD and N2 adsorption/desorption techniques. XRD analysis indicated no agglomeration of Ni and La species, in good agreement with the TEM image. Only under the suitable conditions of a metal loading of 15%, a reaction temperature of 423 K, a reaction time of 60 min, a space velocity of 3 h−1, and a reaction pressure of 1 MPa, could the desulfurization ratio, the debenzolization ratio, and selectivity of benzene to dimethylbutane and toluene reach 100%, 19.9%, 48.9% and 50.9%, respectively, and research octane number of the product increased by 2 units and sulfur content reached “Zero”. The catalyst was actively involved in the in-situ hydrogenation under mild conditions and used for 30 h with no loss in activity. This remarkable behavior makes the NiLaIn/ZrO2-r-Al2O3 family a potential candidate for industrial application as catalysts in the clean fuel.

中文翻译:

NiLaIn / ZrO 2 -r-Al 2 O 3原位加氢同时去除催化裂化汽油中的硫化物和苯

开发了ZrO 2 -r-Al 2 O 3复合材料,并通过浸渍法与镍,镧和铟物种进行了共改性。利用固定床反应器来研究所得催化剂在流化催化裂化汽油中去除硫化物和苯的活性。使用XRD,TEM,XPS,TGA,H 2 -TPR,NH 3 -TPD和N 2吸附/解吸技术对所得样品进行表征。XRD分析表明Ni和La物种没有团聚,与TEM图像非常吻合。仅在金属负载量为15%,反应温度为423 K,反应时间为60分钟,空速为3 h -1的合适条件下反应压力为1 MPa时,苯的脱硫率,脱苯率和苯对二甲基丁烷和甲苯的选择性分别达到100%,19.9%,48.9%和50.9%,并且产品的研究辛烷值提高了2个单位,硫含量达到“零”。该催化剂在温和条件下积极参与了原位氢化反应,并在不损失活性的情况下使用了30小时。这种非凡的性能使NiLaIn / ZrO 2 -r-Al 2 O 3族成为工业应用的潜在候选者,作为清洁燃料中的催化剂。
更新日期:2017-09-06
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