Open AccessTin-sulfur based catalysts for acetylene hydrochlorination
Author(s) -
Yibo Wu,
Fuxiang Li,
Xudong Luo,
Gang Tian,
Yunxiao Feng,
YaPing Han,
Li Wang,
Songmao Chu,
Yun-Li Cao,
Kesheng Cao,
Xiaoming Hu,
Xuejun Shi,
Songtian Li,
Guoxv He,
Qingbin Li
Publication year - 2021
Publication title -
turkish journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.239
H-Index - 46
eISSN - 1303-6130
pISSN - 1300-0527
DOI - 10.3906/kim-2010-36
Subject(s) - acetylene , x ray photoelectron spectroscopy , tin , chemistry , catalysis , adsorption , desorption , sulfur , inorganic chemistry , coke , chemical engineering , organic chemistry , engineering
In the present work, tin-sulfur based catalysts were prepared using Na 2 SO 3 and (CH 3 SO 3 ) 2 Sn and were tested in acetylene hydrochlorination. Based on the analysis of experiments results, the acetylene conversion of (CH 3 SO 3 ) 2 Sn/S@AC is still over 90%after a 50 h reaction, at the reaction conditions of T = 200 o C, V HCl /V C2H2 = 1.1:1.0 and C 2 H 2 -GSHV = 15 h –1 . According to the results of X-ray photoelectron spectroscopy (XPS), HCl adsorption experiments, and acetylene temperature programmed desorption (C 2 H 2 -TPD), it is reasonable to conclude that the interaction between Sn and S not only can retard the oxidation of Sn 2+ in catalysts but also strengthen the reactant adsorption capacity of tin-based catalysts. Furthermore, results obtained from nitrogen adsorption/desorption and XPS proved that the CH 3 SO 3 - can effectively decrease the coke deposition of (CH 3 SO 3 ) 2 Sn/AC and thus prolong the lifetime of (CH 3 SO 3 ) 2 Sn/AC.