文献类型：期刊文献

英文题名：Study on Olefin Alkylation of Thiophenic Sulfur in FCC Gasoline Using La₂O₃-Modified HY Zeolite

作者：Zheng, Xue-dong[1];Dong, Hong-jun[1];Wang, Xin[1];Shi, Li[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2009

卷号：127

期号：1-2

起止页码：70

外文期刊名：CATALYSIS LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000261786400012)】；

基金：The authors thank Sinopec Zhenhai Refining and Chemical Company Limited for providing aromatics and financial support.

语种：英文

外文关键词：Thiophenic sulfur; HY zeolite; La2O3; Alkylation; FCC gasoline

摘要：HY zeolite modified by La2O3 on olefin alkylation of thiophenic sulfur in fluid catalytic cracking (FCC) gasoline was studied in the micro fixed-bed reactor. Reaction pressure 1.5 MPa, reaction temperature 180 A degrees C, WHSV 3.5 h(-1), using HY zeolite modified by 2% La2O3, the conversion of thiophene sulfur promoted nearly 10% with good selectivity, comparing with no-modified by La2O3. Acidity of modification of HY zeolite with La2O3 was tested in Pyridine-IR, it showed that increasing the amount of weak Bronsted (B) acid and the ratio of total B acid with total Lewis (L) acid could strengthen the hydrogen transfer activity of the catalyst, which leaded to improving the capacity of thiophene alkylation. The X-ray diffraction (XRD) results showed that the structure of catalysts could be optimized by loaded proper amount of La2O3 for promoting the acidic properties of HY zeolite.