Tang Siye, Li Liying, Cao Xinxiang, Yang Qingqing
College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471934, China.
Henan Pingmei Shenma Dongda Chemistry Co., Ltd, Kaifeng 475003, China.
Heliyon. 2023 Feb 8;9(2):e13523. doi: 10.1016/j.heliyon.2023.e13523. eCollection 2023 Feb.
This work developed an efficient Ni catalyst based on chitosan for selective hydrogenation of acetylene. The Ni catalyst was prepared by the reaction of the chitosan/carbon nanotube composite with NiSO solution. The synthesized Ni-chitosan/carbon nanotube catalyst was characterized by inductively coupled plasma, FTIR, SEM and XRD. The results of FTIR and XRD demonstrated that Ni successfully coordinated with chitosan. The addition of chitosan greatly improved the catalytic performances of Ni-chitosan/carbon nanotube catalyst. Over the Ni-chitosan/carbon nanotube catalyst, both the acetylene conversion and the selectivity to ethylene all achieved 100% at 160 °C and 190 °C, respectively. The catalytic performances of 6 mg Ni-chitosan/carbon nanotube catalyst were even better than that of 400 mg Ni single atom catalyst in literature. Extending the crosslinking time of chitosan and increasing the amount of the crosslinking agent were beneficial to enhance the catalytic effect of Ni-chitosan/carbon nanotube catalyst.
本研究基于壳聚糖开发了一种用于乙炔选择性加氢的高效镍催化剂。该镍催化剂通过壳聚糖/碳纳米管复合材料与NiSO溶液反应制备而成。采用电感耦合等离子体、傅里叶变换红外光谱仪、扫描电子显微镜和X射线衍射仪对合成的镍-壳聚糖/碳纳米管催化剂进行了表征。傅里叶变换红外光谱仪和X射线衍射仪的结果表明，镍成功地与壳聚糖配位。壳聚糖的加入极大地提高了镍-壳聚糖/碳纳米管催化剂的催化性能。在镍-壳聚糖/碳纳米管催化剂上，乙炔转化率和乙烯选择性分别在160℃和190℃时均达到100%。6mg镍-壳聚糖/碳纳米管催化剂的催化性能甚至优于文献中报道的400mg镍单原子催化剂。延长壳聚糖的交联时间和增加交联剂用量有利于增强镍-壳聚糖/碳纳米管催化剂的催化效果。
