Ảnh hưởng của mo đến hoạt tính xúc tác của v/tio2 trong phản ứng oxi dehydro hóa n-butan

• Tác giả: Minh Cầm Lê, Đức Huyền Ngô, Ngọc Hà Nguyễn
• Ngôn ngữ: vie
• Ký hiệu phân loại: 541.378 Magnetochemistry
• Thông tin xuất bản: Hóa học, 2013
• Mô tả vật lý: 115-120
• Bộ sưu tập: Metadata
• ID: 556299

Tóm tắt

The catalytic performances of vanadia catalysts with 15wt percent V supported on TiO2 and (15wt percent V+5wt percent Mo) supported on TiO2 in oxidative dehydrogenation (ODH) of n-butane were investigated. The catalysts were characterized by means of TPD-NH3, TPR-H2, UV-Vis and BET. Testing of samples showed that MoV catalyst was much more active than the V based catalyst for the reaction. The presence of Mo allowed a better dispersion of active species on the support surface, increased isolated monomeric VOx units with tetrahedral coordination and also increased amount of Me-O-Ti bonds. These factors could be responsible for the higher reactivity of MoV catalysts to the reaction.