High nitrogen carbon material with rich defects as a highly efficient metal-free catalyst for excellent catalytic performance of acetylene hydrochlorination

• Published in: Chinese journal of chemical engineering Vol. 29; no. 1; pp. 196 - 203
• Main Authors: Lu, Fangjie, Xu, Dong, Lu, Yusheng, Dai, Bin, Zhu, Mingyuan
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.01.2021; Key Laboratory for Green Processing of Chemical Engineering, Xinjiang Production and Construction Corps, Shihezi 832000, China; School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832000, China%School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832000, China
• Subjects: Acetylene hydrochlorination; Carbon defects material; Catalyst; Chemical reaction; High nitrogen content; Nanomaterials; Acetylene hydrochlorination; Nanomaterials; Carbon defects material; Chemical reaction; High nitrogen content; Catalyst
• ISSN: 1004-9541; 2210-321X
• DOI: 10.1016/j.cjche.2020.06.008

In this work, we developed a simple strategy to synthesize a carbon material with high nitrogen and rich carbon defects. Our approach polymerized diaminopyridine (DAP) and ammonium persulfate (APS). Following a range of different temperature pyrolysis approaches, the resulting rough surface was shown to exhibit edge defects due to N-doping on graphite carbon. A series of catalysts were evaluated using a variety of characterization techniques and tested for catalytic performance. The catalytic performance of the N-doped carbon material enhanced alongside an increment in carbon defects. The NC-800 catalyst exhibited outstanding catalytic activity and stability in acetylene hydrochlorination (C2H2 GHSV = 30 h−1, at 220 °C, the acetylene conversion rate was 98%), with its stability reaching up to 450 h. Due to NC-800 having a nitrogen content of up to 13.46%, it had the largest specific surface area and a high defect amount, as well as strong C2H2 and HCl adsorption. NC-800 has excellent catalytic activity and stability to reflect its unlimited potential as a carbon material. [Display omitted]