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Số người truy cập: 106,998,901

 Radiofrequency-driven selective oxidation of H2S on hierarchical metal-free catalyst containing defects
Tác giả hoặc Nhóm tác giả: Tri Truong-Huu, Cuong Duong-Viet, Hy Duong-The, Jean-Mario Nhut, Thierry Romero, Lai Truong-Phuoc, Housseinou Ba, Lam Nguyen-Dinh, Cuong Pham-Huu
Nơi đăng: Applied Catalysis A, General; Số: 620;Từ->đến trang: 118171;Năm: 2021
Lĩnh vực: Khoa học công nghệ; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT
Hierarchical all carbon metal-free catalyst with controlled macroscopic shape based on the carbon nanotubes decorated carbon felt (CNT@CF) has been prepared. The catalyst was further treated under gaseous nitric acid to generate structural defects on its surface (o-CNT@o-CF). The as-synthesized catalyst was evaluated in the partial oxidation of H2S by oxygen into elemental sulfur in a fixed-bed reactor under a direct and non-contact inductive heating mode. The catalytic results indicate that the o-CNT@o-CF catalyst exhibits an extremely high desulfurization performance under inductive heating mode. The high desulfurization performance was attributed to the high effective heat management inside the catalyst through inductive heating along with a short diffusion length associated with the nanoscopic dimension of the carbon nanotubes. The catalyst also displays a high stability as a function of time on stream.
ABSTRACT
Hierarchical all carbon metal-free catalyst with controlled macroscopic shape based on the carbon nanotubes decorated carbon felt (CNT@CF) has been prepared. The catalyst was further treated under gaseous nitric acid to generate structural defects on its surface (o-CNT@o-CF). The as-synthesized catalyst was evaluated in the partial oxidation of H2S by oxygen into elemental sulfur in a fixed-bed reactor under a direct and non-contact inductive heating mode. The catalytic results indicate that the o-CNT@o-CF catalyst exhibits an extremely high desulfurization performance under inductive heating mode. The high desulfurization performance was attributed to the high effective heat management inside the catalyst through inductive heating along with a short diffusion length associated with the nanoscopic dimension of the carbon nanotubes. The catalyst also displays a high stability as a function of time on stream.
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