2012年1月30日星期一

What is CoMo hydrodesulfurization?





CoMo hydrodesulfurization (HDS) catalysts, consisting of a conducting substrate with a thin SiO2 or Al2O3 layer on top of which the active catalytic phase is deposited by spin coating, were used to study the influence of the support and the use of chelating agents on the formation of the active CoMoS phase. Due to the interaction of Mo with the support the Co–Al2O3 interaction is blocked. In these catalysts the sulfidation of Co and Mo proceed at the same rate. In the case of CoMo/SiO2 catalysts the weak interaction with the SiO2 support results in the complete sulfidation of Co at low temperatures, while Mo sulfides at a slower rate.
Thiophene CoMo hydrodesulfurization activity measurements showed that due to the stronger interaction, Al2O3 is a better support for CoMoS formation. By complexing CoMo on Al2O3 to chelating agents, like ethylenediaminetetraacetic acid (EDTA), the sulfidation of Co is retarded while that of Mo is facilitated.
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2012年1月29日星期日

2012年1月16日星期一

The Advantages of N-butylpyridinium dicyanamide

Advantage of N-butylpyridinium dicyanamide
The achieved viscosities were used to calculate the viscosity B coefficient of the mixtures.The results show that the values of V E are negative over the entire composition range. The results indicate that the Redlich-Kister equation can be used to correlate the two mentioned physical properties of this system well.The viscosity B coefficient of the mixtures was calculated by Jones-Dole equation,and its value is 0.35608,which indicates that the methanol effectively reduces the viscosity of ionic liquids.
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What is Organic waste gas purification catalyst?

Organic waste gas purification catalyst is the use of high-temperature catalyst materials with high specific surface and high performance rare earth oxygen storage material as the carrier, with a high dispersion rate uniformly distributed prepared from monolithic catalyst.
Organic waste gas purification catalyst is a new and efficient catalyst for various types of industrial waste gas purification. The catalyst for the Treatment of carbon monoxide, hydrocarbons and their oxygenated derivatives of industrial emissions.
Organic waste gas purification catalyst  life long, not less than 30,000 hours and anti-toxic, high temperature sintering, water resistant, anti-caking properties of a strong carbon.
Read more: http://www.catalyst-pro.net/Products/Organic-waste-gas-purification-catalyst.html