Nitrogen-doped carbon nanotube spheres as metal-free catalysts for the partial oxidation of H2S

作者：Ba Housseinou; Cuong Duong Viet; Liu Yuefeng^*; Nhut Jean Mario; Granger Pascal; Ledoux Marc J; Cuong Pham Huu^*

来源：Comptes Rendus Chimie, 2016, 19(10): 1303-1309.

DOI：10.1016/j.crci.2015.09.022

• Nitrogen-doped carbon nanotubes
• Macroscopic shape
• Metal-free catalyst
• Desulfurization
• H2S oxidation

Nitrogen-doped carbon nanotubes (N-CNTs) with macroscopic shaping were synthesized by a coagulation route using alginate as a coagulating agent and the as-synthesized sample was used as metal-free catalysts in the partial oxidation of H2S into elemental sulfur. The N-CNT beads display a relatively high desulfurization activity along with a high stability as a function of time on stream. The desulfurization performance of the N-CNT beads was also measured and compared to that of the Fe2O3/SiC catalyst. The N-CNT beads display a higher desulfurization activity under the similar reaction conditions with, however, lower sulfur selectivity due to the problem of diffusion of the reactant through the bead porosity.

• 出版日期2016-10