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- Title
In Situ Synthesis of Monolithic TS‑1 on Nitrogen-Doped Carbon Layer Decorated Nickel Foam with Small Particle TS-1 and High Content of Lewis Acid.
- Authors
Shi, Run-Ming; Cao, Gui-Ping; Lv, Hui; Ji, Shuang; Yan, Jun-Yang; Gao, Peng
- Abstract
Monolithic TS-1 can solve the problem of industrial separation caused by TS-1 powder, However, the influence of the support on the internal structure of TS-1 remains to be studied. The support capable of regulating the internal structure of TS-1 is required. In this article, using Polyacrylonitrile (PAN) as carbon and nitrogen source, nitrogen-doped carbon layer decorated nickel foam (NC@HNF) was synthesized by CSD (Chemical Solid Deposition) method for the first time, which can be stable in nitrogen atmosphere at 550 °C for 6 h. The monolithic TS-1 was successfully synthesized by loading TS-1 particles on NC@HNF, and the N atom doped in NC@HNF can effectively regulate the internal structure of TS-1. By optimizing the growth temperature and time of nitrogen-doped carbon layer, the support with both high carbon order degree and high nitrogen content was obtained, and the further obtained monolithic TS-1 had smaller particle size and higher content of Lewis acid, showing excellent catalytic performance in the propylene epoxidation reaction. The pyridine nitrogen in NC@HNF can promote the dehydration condensation of Si − OH and Ti − OH, effectively reducing the energy barrier of the dehydration condensation process and allowing more Ti − OH to enter the MFI topological framework of TS-1, which was confirmed by simulation.
- Subjects
LEWIS acids; DOPING agents (Chemistry); ATMOSPHERIC nitrogen; FOAM; POLYACRYLONITRILES; NICKEL; ACTIVATION energy; CARBON
- Publication
Catalysis Letters, 2024, Vol 154, Issue 6, p2735
- ISSN
1011-372X
- Publication type
Article
- DOI
10.1007/s10562-023-04518-5