In the vapor phase oxidation of p-methoxytoluene (PMT) to p–methoxybenzaldehyde (PMBA), V 2 O 5 –MmOn binary catalysts, wherein MmOn were selected from acidic or basic oxides respectively, were studied. The V 2 O 5 based catalysts composed of basic oxides (M=K, Rb, Cs, Tl, Ag...
In acid-base reactions, the acidic v2o5 sites can interact with basic species on the TiO2 support to catalyze the formation of new chemical bonds. Additionally, the interaction between v2o5 and TiO2 can create synergistic effects that enhance the overall catalytic activity of the catalyst. ...
The structural and electronic properties of the surface are very close to those of the bulk. The interlayer interaction is mainly electrostatic and is found to be 4 kcal/mol. Surface acidic and basic properties are described in terms of projected density of states analysis. 展开 关键词:...
Adding these reactive basic oxides to an industrial acidic electrolyte for nickel plating would alter the optimum pH value of sulfamate electrolytes, ranging from a pH of 3.5–4 [18,19], to above 5. At pH values above 5, the precipitation of nickel(II) hydroxide begins [19], depositing ...
I. The TiO2–MoO3 and TiO2–V... The amounts of both the acidic and basic sites of two series of catalysts, TiO2–MoO3 and TiO2–V2O5... Mamoru,Ai - 《Bulletin of the Chemical Society of Japan》 被引量: 28发表: 1976年 Effect of manganese and/or ceria loading on the V2O5–MoO3...
哈尔滨工程大学 硕士学位论文 Cu、Mn、Ce改性V2O5--WO3/MOx/CC催化剂的制备及其催化脱硝 性能 姓名:***申请学位级别:硕士 专业:应用化学 指导教师:**君 20110320 Cu、Mn、Ce改性V205.W03/MO。/CC催化剂的制备及其催化脱硝性能 tm i"一I——Ij皇暑_ 摘要 氮氧化物(NOx)是主要的大气污染物之一,是酸雨、光...
the phosphorus content, much as the catalytic activity does for a base-catalyzed reaction such as the dehydrogenation of ethanol, indicating that the activity is governed by basic or oxidizing sites, rather than by the acidic sites, not as in the cases of many other V 2O 5-based catalysts....
This adsorption on the surface of these compounds has been studied in order, in the hand to investigate information on their surface acidity and in the other hand to know particularly the nature and strength of acidic and basic sites. Among the molecular probes, we used carbon monoxide, carbon...
The surface molybdenum oxide sites on tantalum oxide possess both acidic and redox characteristics. No surface basic sites were found on any of the tantalum oxide-supported metal oxide catalysts. The relative redox activity and selectivity of the various tantalum oxide-supported metal oxides reflect ...
In hydrolysis of TiOSO4 solution obtained from acidolysis of slag, the hydrolytic pH value was varied to control the precipitation of metal components and thus the properties of the obtained BFS-TiO2 support such as composition, structure and acidic properties. All synthetic BFS-TiO2, which ...