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] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, 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：EI(收录号：20085211809084)

语种：英文

外文关键词：Zeolites - Sulfur - Thiophene - X ray diffraction - Fluid catalytic cracking - Catalyst activity - Olefins - Chemical reactors - Lanthanum oxides - 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 °C, WHSV 3.5 h-1, using HY zeolite modified by 2% La 2O3, the conversion of thiophene sulfur promoted nearly 10% with good selectivity, comparing with no-modified by La2O 3. Acidity of modification of HY zeolite with La2O 3 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.