期刊
CATALYSIS SCIENCE & TECHNOLOGY
卷 12, 期 14, 页码 4605-4612出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2cy00581f
关键词
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资金
- National Natural Science Foundation of China [21871275]
- Natural Science Foundation of Hebei Province [B2019205149]
In this study, a solvent-free continuous flow bimetallic Pt/V catalytic hydrogenation method for N-methylpyrrolidone (NMP) to prepare N-methylpyrrolidine (NMPD) was developed. The yield of NMPD reached 89.41% under the optimal reaction conditions, and the best catalyst proportion was found to be Pt/V = 1:0.5 on HAP. The catalysts exhibited excellent stability, with a yield of 85.21% even after running for 100 hours.
Herein, solvent-free continuous flow bimetallic Pt/V catalytic hydrogenation of N-methylpyrrolidone (NMP) to prepare N-methylpyrrolidine (NMPD) was developed. The yield of NMPD was as high as 89.41%, and the best weight hourly space velocity was 1.2 h(-1) under the optimal reaction conditions, which were screened by the response surface methodology. The catalysts with different ratios of Pt and V supported on hydroxyapatite (HAP) were prepared and evaluated for activity for the hydrogenation of NMP. The best catalyst proportion was Pt/V = 1 : 0.5 on HAP, which was characterized by STEM-EDS, ICP-OES, BET, XPS, and PSD analyses. It was shown that polyvalent Pt and V were highly dispersed on HAP and the synergistic effect between Pt and V species contributed to the excellent catalytic performance. More importantly, the catalyst stability was excellent and after running for 100 h, the yield remained at 85.21%. Significantly, this solvent-free continuous flow catalytic hydrogenation of an amide provides a green, efficient, low-cost and environmentally friendly process for the synthesis of NMPD.
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