Jiang Zhaoshuo, Feng Yingchao, Gou Yu, Xia Ziyi, Yuan Binwei, Ali Syed Husnain, Rong Xuejiao, Guo Anni, Chen Ligong, Wang Bowei
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China.
Department of Orthopaedic Surgery, Tianjin Hospital, Tianjin University,Tianjin 300211, P. R. China.
ACS Omega. 2024 Sep 17;9(39):40424-40432. doi: 10.1021/acsomega.4c02498. eCollection 2024 Oct 1.
The activation of molecule hydrogen (H) by metal-free catalysts is always a challenge in the field of catalysis. Herein, a series of N, P dual-doped carbon catalysts were constructed by the pyrolysis of chitosan and phytic acid and utilized as metal-free catalysts for the hydrogenation of nitrobenzene. The characterization indicated that the doping of phosphorus atoms not only formed the species with catalytic activity for hydrogenation reaction but also promoted the doping of N. The experimental results indicated that their catalytic performance could be improved by the regulation of pyrolysis temperature and heating rate. CP-900-1 (pyrolysis at 900 °C with a heating rate of 1 °C/min) exhibited a promising catalytic activity with >99% nitrobenzene conversion. N, P codoping was the key factor to its catalytic performance. All results indicated that the excellent catalytic activity of CP-900-1 was attributed to the synergistic interaction among pyridinic N, P-C species, and graphitic N. This work provides an effective route for the rational design and construction of highly efficient metal-free catalysts for hydrogenation.
在催化领域，无金属催化剂对分子氢（H）的活化一直是一项挑战。在此，通过壳聚糖和植酸的热解构建了一系列N、P双掺杂碳催化剂，并将其用作硝基苯氢化反应的无金属催化剂。表征表明，磷原子的掺杂不仅形成了具有氢化反应催化活性的物种，还促进了N的掺杂。实验结果表明，通过调节热解温度和升温速率可以提高它们的催化性能。CP-900-1（在900℃下以1℃/min的升温速率热解）表现出有前景的催化活性，硝基苯转化率>99%。N、P共掺杂是其催化性能的关键因素。所有结果表明，CP-900-1优异的催化活性归因于吡啶型N、P-C物种和石墨型N之间的协同相互作用。这项工作为合理设计和构建用于氢化反应的高效无金属催化剂提供了一条有效途径。
