The effects of using different promoters on hydrotalcite based cobalt (HT-Co) catalyst for FischerTropsch Synthesis was studied in this paper. The HT-Co catalysts were synthesized by using hydrothermal method whereas zinc and zirconium were added separately as promoters, by wetness impregnation method. The main aim of the study is to see the difference in properties of both zinc and zirconium p...

Catalytic conversion of waste rubbers and plastics into aromatic hydrocarbons is a promising approach to management energy recovery. In the present study, acidic HY zeolites were supported by cobalt, iron, zirconium, catalysts characterized powder X-ray diffraction, nitrogen adsorption-desorption, ammonia temperature programmed desorption, photoelectron spectroscopy, pyridine-Fourier transform ...

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industries, its nuclear properties in the pure metallic form make it highly desirable for nuclear applications. Zr is highly corrosion resistant and has a high melting point (2128 K) with a low thermal neutron absorption cross-section of Zr T = 0.18 b, which is significantly smaller than that of hafnium Hf T =115 b) (Speer, 1982), an element that coexists with Zr in nature. This makes Zr ideal ...

We report vacuum packaging procedures for low-stress die attachment and versatile hermetic sealing of resonant MEMS. The developed in-house infrastructure allows for both high and moderate-level vacuum packaging addressing the requirements of various applications. Prototypes of 100 μm silicon-on-insulator Quadruple Mass Gyroscopes (QMGs) were packaged using the developed process with and withou...

a chain of events which leads to the disintegration of the personality and ultimately to the hospital. The percentage of the population who will spend some part of their lives in a mental hospital is increasing, and 3 large proportion of these people are elderly. Senile dementia, it is thought* is accelerated by loneliness. A harsh winter makes already existing problems more imminent. Death amo...

The composite coatings electrodeposition with the refractory metals and zirconium cobalt makes it possible to obtain a coating unique combination of physicochemical properties that are unattainable when using other application methods. One reasons for limited use electrolytic method such composites is difficulty controlling process. alloys iron subgroup depend not only on chemical composition (...