分子筛改性纳米自组装催化剂  

Molecular sieve modified nano self-assembly catalyst

作　　者：周润欣 王鼎聪[2] 赵德智[1] 

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001 [2]中国石化抚顺石油化工研究院,辽宁抚顺113001

出　　处：《现代化工》2015年第9期117-120,共4页Modern Chemical Industry

摘　　要：向纳米自组装催化剂载体中加入10％～50％的分子筛（LNS-0），以未添加分子筛的纳米自组装催化剂作参比剂，对制得的催化剂进行表征、评价。结果表明，分子筛可以改善纳米自组装催化剂的孔性质，提高催化活性。当添加30％LNS-0时，所得催化剂MNL30-25D孔性质最好，活性最高，其孔径大小为0．35mL／g，比表面积为309．7m。／g，分别是参比剂的1．4、2．31倍；观察XRD图谱，该催化剂表面活性金属弥散性最好；其脱氮率、脱硫率、芳烃饱和率分别是参比剂的1．024、1．046、1.815倍。但是随着分子筛加入量〉30％，LNS-0对纳米自组装催化剂的影响减小，并且加人量过大会抑制纳米自组装催化剂的活性。Molecular sieve modified self-assembly catalysts are prepared by adding 10% -50% of the molecular sieve （LNS-O） to the nano sell-assembly catalyst carriers. Using the nano self-assembly catalysts without molecular sieve as the reference agent, the obtained molecular sieve modified sell-assembly catalysts are characterized and evaluated. The results demonstrate that molecular sieve can improve the properties and activity of the nano self-assembly catalysts. When the content of LNS-0 is 30%, the resulting modified self-assembly catalyst, MNI30-25D, has the most optimal properties and catalyst activity. Its pore diameter and specific area are 0. 35 mL/g and 309. 7 m2/g,which are 1.4 and 2. 31 times higher than the reference agent, respectively. At the same time, the reactive metals of the catalyst have the best dispersion. The denitrification rate, desullurization rate and aromatics saturation rate are 1. 024,1. 046 and 1. 815 times higher than the reference agent＇ s. However, when the content of LNS-0 is above 30% , LNS-0 exhibits less impact on the nano self-assembly catalyst. Excess molecular sieve is also found to inhibit the catalyst activity.

关 键 词：分子筛 纳米自组装 催化剂表征 催化剂评价 

分 类 号：TE624.93[石油与天然气工程—油气加工工程]