Home
Giới thiệu
Tài khoản
Đăng nhập
Quên mật khẩu
Đổi mật khẩu
Đăng ký tạo tài khoản
Liệt kê
Công trình khoa học
Bài báo trong nước
Bài báo quốc tế
Sách và giáo trình
Thống kê
Công trình khoa học
Bài báo khoa học
Sách và giáo trình
Giáo sư
Phó giáo sư
Tiến sĩ
Thạc sĩ
Lĩnh vực nghiên cứu
Tìm kiếm
Cá nhân
Nội dung
Góp ý
Hiệu chỉnh lý lịch
Thông tin chung
English
Đề tài NC khoa học
Bài báo, báo cáo khoa học
Hướng dẫn Sau đại học
Sách và giáo trình
Các học phần và môn giảng dạy
Giải thưởng khoa học, Phát minh, sáng chế
Khen thưởng
Thông tin khác
Tài liệu tham khảo
Hiệu chỉnh
Số người truy cập: 107,038,920
Carbon nanotubes containing oxygenated decorating defects as metal-free catalyst for selective oxidation of H2S
Tác giả hoặc Nhóm tác giả:
Cuong Duong-Viet; Yuefeng Liu; Housseinou Ba; Lai Truong-Phuoc; Walid Baaziz;
Lam Nguyen-Dinh
; Jean-Mario Nhut; Cuong Pham-Huu
Nơi đăng:
Applied Catalysis B: Environmental;
S
ố:
191;
Từ->đến trang
: 29 - 41;
Năm:
2016
Lĩnh vực:
Khoa học công nghệ;
Loại:
Bài báo khoa học;
Thể loại:
Quốc tế
TÓM TẮT
In this study, we report on the influence of gaseous HNO3 treatment, with various time and temperature, on the creation of defects decorated with oxygenated functional groups on the CNTs side-wall. The gaseous acid treatment leads to a significant increase of the oxygenated functional groups and defects on the tube wall along with a specific surface area improvement. The as-synthesized catalyst was further used as a metal-free catalyst in the selective oxidation of H2S in the waste effluents. According to the results the defects decorated with oxygenated groups are extremely active for performing partial oxidation of H2S into elemental sulfur. The desulfurization activity is extremely high and stable as a function of time on stream which indicates the high efficiency of these oxidized un-doped carbon nanotubes as metal-free for the selective oxidation process. The high catalytic performance was attributed to both the presence of structural defects on the carbon nanotubes wall which acting as a dissociative adsorption center for the oxygen and the oxygenated functional groups which could play the role of active sites
ABSTRACT
In this study, we report on the influence of gaseous HNO3 treatment, with various time and temperature, on the creation of defects decorated with oxygenated functional groups on the CNTs side-wall. The gaseous acid treatment leads to a significant increase of the oxygenated functional groups and defects on the tube wall along with a specific surface area improvement. The as-synthesized catalyst was further used as a metal-free catalyst in the selective oxidation of H2S in the waste effluents. According to the results the defects decorated with oxygenated groups are extremely active for performing partial oxidation of H2S into elemental sulfur. The desulfurization activity is extremely high and stable as a function of time on stream which indicates the high efficiency of these oxidized un-doped carbon nanotubes as metal-free for the selective oxidation process. The high catalytic performance was attributed to both the presence of structural defects on the carbon nanotubes wall which acting as a dissociative adsorption center for the oxygen and the oxygenated functional groups which could play the role of active sites
© Đại học Đà Nẵng
Địa chỉ: 41 Lê Duẩn Thành phố Đà Nẵng
Điện thoại: (84) 0236 3822 041 ; Email: dhdn@ac.udn.vn