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Số người truy cập: 75,104,053

 Upgrading greenhouse gases (methane and carbon dioxide) into syngas using nickel-based catalysts
Tác giả hoặc Nhóm tác giả: Bruna Rego de Vasconcelos, Doan Pham Minh, Nathalie Lyczko, Thanh Son Phan, Patrick Sharrock, Ange Nzihou
Nơi đăng: Tạp chí Fuel; Số: 226;Từ->đến trang: 195-203;Năm: 2018
Lĩnh vực: Khoa học công nghệ; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT
In this work, Mg-doped Al2O3 supports were used for the preparation of Ni catalysts, which were then tested in dry reforming of methane reaction (DRM) for syngas production. The influence of MgO content (0–70 wt%) on the basicity of the catalysts as well as on the formation of a NiO-MgO solid solution was investigated and linked to the catalytic performance of the catalysts. The catalyst containing high amount of Mg (Ni/70MgAl) showed the best performance with negligible deactivation rate over 50 h of time on stream (TOS). The presence of strong basic sites in this catalyst was important to adsorb carbon dioxide (CO2), to gasify the coke deposit and to increase the syngas production. Also, the presence of a NiO-MgO solid solution led to strong metal-support interaction, which limited the sintering of nickel particles. The quantification of the water formed during the reaction showed that its formation was crucial for …
ABSTRACT
In this work, Mg-doped Al2O3 supports were used for the preparation of Ni catalysts, which were then tested in dry reforming of methane reaction (DRM) for syngas production. The influence of MgO content (0–70 wt%) on the basicity of the catalysts as well as on the formation of a NiO-MgO solid solution was investigated and linked to the catalytic performance of the catalysts. The catalyst containing high amount of Mg (Ni/70MgAl) showed the best performance with negligible deactivation rate over 50 h of time on stream (TOS). The presence of strong basic sites in this catalyst was important to adsorb carbon dioxide (CO2), to gasify the coke deposit and to increase the syngas production. Also, the presence of a NiO-MgO solid solution led to strong metal-support interaction, which limited the sintering of nickel particles. The quantification of the water formed during the reaction showed that its formation was crucial for …
[ son et al upgrading greenhouse gases (methane and carbon dioxide) into syngasusing nickel-based catalysts.pdf ]
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