摘要：A series of in situ dodecyl trimethyl ammonium bromide (DTAB)-modified small-crystal Y zeolites have been successfully synthesized by DTAB addition to the seed synthesis procedure, which was used to create the small crystal size Y zeolites. Compared to the Y zeolites prepared without DTAB, the Y zeolites prepared with DTAB have a uniform morphology and mesoporous structure, a larger specific surface area (up to 32.3 m2 g-1 increase), a smaller crystal size (up to 66 nm reduction), and more Bro''nsted acid sites (up to 55 mu mol/g increase). After loading with NiW, the corresponding NiW catalysts were utilized in the hydrocracking of n-hexadecane. It is evident from the catalytic performance that the catalysts containing DTAB-modified small -crystal zeolites have a higher yield and selectivity of primary cracking products compared with the Y zeolites without DTAB modification. Moreover, the conversion of n-hexadecane is also higher due to its low mass-transfer resistance, high dispersion, and sulfation of W species. When the molar ratio of DTAB/Al2O3 is 0.15, the corresponding catalyst has the optimum balance between cracking and hydro-dehydrogenation activity. Therefore, it has the most excellent catalytic performance and a 7.3% increase in C8-C12 yield.

ISSN号：0887-0624

卷、期、页：卷: 36期: 22页: 13817-13832

发表日期：2022-11-17

影响因子：3.604600

期刊分区（SCI为中科院分区）：三区

收录情况：SCI（科学引文索引印刷版）,SCIE（科学引文索引网络版）

发表期刊名称：ENERGY & FUELS

通讯作者：王晓晗,于志庆,孙劲晓,刘昊然,黄文斌,赵鲁媛,司梦

第一作者：魏强,周亚松

论文类型：期刊论文

论文概要：王晓晗,于志庆,孙劲晓,魏强,刘昊然,黄文斌,赵鲁媛,司梦,周亚松，Synthesis of Small Crystal Size Y Zeolite Catalysts with High Hydrocracking Performance on n-Hexadecane，ENERGY & FUELS，2022，卷: 36期: 22页: 13817-13832

论文题目：Synthesis of Small Crystal Size Y Zeolite Catalysts with High Hydrocracking Performance on n-Hexadecane