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Selective modification of surface and bulk V5+/V4+ ratios and its effects on the catalytic performance of Mo-V-Te-O catalysts
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2007-02)
Selective modification of surface and bulk V5+/V4+ ratios in Mo-V-Te-O catalysts has been achieved using nitric acid and saturated ammonia solutions as pH adjustors. The addition of nitric acid strongly suppressed V4+ in ...
Role of Te on selective oxidation of propane to acrolein over MoBiTeO/SiO2 catalysts
(PEKING UNIV PRESS, 2007)
A series of MoBiTeO/SiO2 catalysts with different Te contents was prepared by impregnation method. Effect of Te on the catalysts'structure, acidity and catalytic performance for selective oxidation of propane to acrolem ...
Studies on VPO/SiO2 catalyst for selective oxidation of propane
(SCIENCE CHINA PRESS, 2003)
VPO catalyst is one of promising catalysts for selective oxidation of C4H10 and C3H8. The catalysts VPO and VPO/SiO2 with different VPO loading were prepared. Using BET, XRD, LRS, XPS, H-2-TPR and C3H8-TPD techniques, the ...
Selective oxidation of propane to acrolein over MoPO/SiO2 catalyst
(SCIENCE CHINA PRESS, 2003)
The selective oxidation of propane to acrolein over the MoPO/SiO2 catalyst has been studied. MoO/SiO2 exhibits only activity for the oxidative dehydrogenation of propane to propene. The propane conversion and acrolein ...
Effect of promoter Ce on silver-molybdenum-phosphate catalysts for selective oxidation of propane to acrolein
(ELSEVIER SCIENCE BV, 2003-02-21)
A series of MenAg0.3Mo0.5P0.3Oy (Me = Cu, Zn, Mn, W, Ce, Pr, Nd) and Ag0.3Mo0.5P0.3Ox catalysts were prepared. The addition of Ce to Ag0.3Mo0.5P0.3Ox catalysts improved the catalytic performance in selective oxidation of ...
Direct oxidation of propane to acrolein over MCM41-supported MoVTe mixed oxide catalysts
(ELSEVIER SCIENCE BV, 2004-10)
MCM41-supported MoVTe mixed oxide catalysts have been prepared and exhibit high catalytic activity in direct oxidation of propane to acrolein (ACR). Characterisation and catalytic results show that under studied conditions, ...
Role of Ce on selective oxidation of propane to acrolein over Ce-Ag-Mo-P-O catalysts
(PEKING UNIV PRESS, 2003)
Role of Ce on the catalytic performance of Ce-Ag-Mo-P-O catalyst in selective oxidation of propane to acrolein was investigated. In order to establish the relationship between the catalytic performance and properties, the ...
Selective oxidation of propane to acrolein over Ce-doped Ag-Mo-P-O catalysts: influence of Ce promoter
(KLUWER ACADEMIC/PLENUM PUBL, 2003)
The selective oxidation of propane to acrolein was performed on Ce-doped Ag0.3Mo0.5P0.3Ox catalysts. The maximal acrolein yield of 4.4% with 28.7% acrolein selectivity was obtained on Ce0.1Ag0.3Mo0.5P0.3Oy catalyst. The ...
Reaction mechanism of selective oxidation of propane to acrolein over MoPO/SiO2 catalyst
(SCIENCE CHINA PRESS, 2006)
To elucidate possible reaction pathways for propane selective oxidation to acrolein over the MoPO/SiO2 catalyst, oxidative conversions of propane and possible intermediates or their probe molecules as well as the reaction ...
MoVBiTeO/SiO_2对丙烷选择氧化制丙烯醛反应的催化性能
(《催化学报》编辑部, 2008-04)
[中文文摘]用浸渍法制备了一系列不同Mo/V比的MoVBiTeO/SiO2催化剂,并用X射线衍射、拉曼光谱、X射线光电子能谱、程序升温还原和红外光谱等方法对催化剂的结构、氧化还原性质和酸性进行了表征,考察了催化剂对丙烷选择氧化制丙烯醛反应的催化性能.结果表明,Mo与V组分之间存在较强的相互作用,调变了催化剂的结构,并形成了氧化还原循环(V5++Mo5+V4++Mo6+),促进了催化剂中电子和O物种的传递,使催化剂的低温可还原性增强,催化 ...