用于乙炔氢氯化反应的锡硫基催化剂。
Tin-sulfur based catalysts for acetylene hydrochlorination.
作者信息
Wu Yibo, Li Fuxiang, Luo Xiaoqiang, Tian Gang, Feng Yunxiao, Han Yongjun, Wang Li, Chu Songmao, Cao Yunli, Cao Kesheng, Hu Xiaoming, Shi Xuejun, Li Songtian, He Guoxv, Li Qingbin
机构信息
College of Chemistry and Environmental Engineering, Pingding Shan University, Pingding Shan China.
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan China.
出版信息
Turk J Chem. 2021 Jun 30;45(3):566-576. doi: 10.3906/kim-2010-36. eCollection 2021.
In the present work, tin-sulfur based catalysts were prepared using NaSO and (CHSO)Sn and were tested in acetylene hydrochlorination. Based on the analysis of experiments results, the acetylene conversion of (CHSO)Sn/S@AC is still over 90%after a 50 h reaction, at the reaction conditions of T = 200 C, V/V = 1.1:1.0 and CH-GSHV = 15 h. According to the results of X-ray photoelectron spectroscopy (XPS), HCl adsorption experiments, and acetylene temperature programmed desorption (CH-TPD), it is reasonable to conclude that the interaction between Sn and S not only can retard the oxidation of Sn 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 CHSO- can effectively decrease the coke deposition of (CHSO)Sn/AC and thus prolong the lifetime of (CHSO)Sn/AC.
在本工作中，使用NaSO和(CHSO)Sn制备了锡硫基催化剂，并在乙炔氢氯化反应中进行了测试。基于实验结果分析，在T = 200℃、V/V = 1.1:1.0和CH-GSHV = 15 h的反应条件下，(CHSO)Sn/S@AC在50 h反应后的乙炔转化率仍超过90%。根据X射线光电子能谱(XPS)、HCl吸附实验和乙炔程序升温脱附(CH-TPD)的结果，可以合理地得出结论，Sn和S之间的相互作用不仅可以延缓催化剂中Sn的氧化，还可以增强锡基催化剂对反应物的吸附能力。此外，氮气吸附/脱附和XPS的结果证明，CHSO-可以有效减少(CHSO)Sn/AC的积炭，从而延长(CHSO)Sn/AC的寿命。
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