نتایج جستجو برای: nano sulfated zirconia
تعداد نتایج: 60955 فیلتر نتایج به سال:
The effects of microwave power and sample quality on drying kinetics characteristics zirconia were studied. It is found that by increasing the decreasing mass, surface diffusion coefficient (Deff) appears to an upward tendency. corresponding value Deff at a mass 10, 20, 30, 40g are 1.849E-14, 2.443E-14, 3.210E-14, 3.278E-14 m2/s, respectively. 300, 400, 500, 600, 700W 1.270E-14, 1.784E-14, 2.61...
The primary goal of this preparation method was synthesis of uniformly coated ZrO2/SBA-15 materials exhibiting high dispersion and accessibility of zirconium using a layerwise deposition method to minimize growth of large crystallites. SBA15 was prepared the original method by Zhao et al.1 First 10g of SBA-15 was dried at 300°C for 4 hours. Then the dried SBA-15 and 58.5g of zirconium precursor...
The selective catalytic reduction (SCR) of NO by methane in the presence of excess oxygen has been studied on a series of Pd catalysts supported on sulfated zirconia (SZ). This support is not as sensitive to structural damage by steaming as the acidic zeolites, such as H-ZSM-5 and H-Mor. In previous studies, it was shown that this type of acidic zeolites are able to stabilize Pd2+ ions and prom...
Here we describe a simple route to creating conformal sulphated zirconia monolayers throughout an SBA-15 architecture that confers efficient acid-catalysed one-pot conversion of glucose to ethyl levulinate.
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