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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 ...
丙烷在负载型V_2O_5/Zr_3(PO_4)_4催化剂上的氧化脱氢
(《应用化学》编辑部, 1999-03)
[中文摘要]制备了无定型的磷酸锆Ｚｒ３（ＰＯ４）４载体，采用浸渍法在载体上负载0.６％～６.０％的Ｖ２Ｏ５．所制备的催化剂在丙烷氧化脱氢反应中具有较好的催化性能，如３.０％Ｖ２Ｏ５／Ｚｒ３（ＰＯ４）４催化剂在丙烷转化率为１７.０％时，丙烯选择性可达５３.8％，丙烯收率达９.１％．考察了不同反应条件下催化剂的性能．ＸＲＤ、ＩＲ和Ｒａｍａｎ光谱表明，Ｖ２Ｏ５在Ｚｒ３（ＰＯ４）４载体上主要是以高度分散的钒氧物种存在；ＥＳＲ分析结果证明催化剂中 ...
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 ...
The effect of MoO3 in Ag-Mo-P-O catalysts on oxidative dehydrogenation of propane
(PEKING UNIV PRESS, 2002)
A series of AMP catalysts with different composition were prepared. These catalysts have been characterized by XRD, H-2-TPR, XPS, EPR, NH3-DRIFT, decomposition of isopropanol reaction. The catalytic performance of oxidative ...
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 ...
Dynamic structure of Mo-O species in Ag-Mo-P-O catalyst for oxidative dehydrogenation of propane
(CHINESE CHEMICAL SOCIETY, 2002)
The dynamic structure of Mo-O species in Ag-Mo-P-O catalyst was studied by in situ confocal microprobe laser Raman spectroscopy (LRS) and catalytic test. The results indicate Mo-O species of MoO3 transformed to Mo-O species ...
Active surface structure of AgMoO2PO4 center dot MoO3 catalyst for selective oxidation of propane
(HIGHER EDUCATION PRESS, 2001)
The active surface structure of AgMoO2PO4 .MoO3 catalyst was investigated by in situ confocal microprobe Raman spectroscopy, evaluation of catalytic performance, XRD and XPS techniques. The results show that MoO3 and ...
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, ...