Conversion Of Natural Gas In The Aerosol
Conversion of natural gas in the aerosol
of metallic nickel
E.V. Fursov, M.A. Glikin, D.A. Kutakova
State Research and Design Institute of Chemical Tehnology “Khimtekhnologiay”, Vilesov st. 1, Severodonetsk, 93400 Lugansk Region, Ukraine, fax: (06452) 25367, e-mail: prin@ixt.lg.ua
The steam-air conversion of natural gas in the aerosol of metallic nickel without support is carried out. The nickel catalyst has polydisperse composition, the general surface – 46 м2/g, surface Ni – 4,8 м2/g, size of crystallites 100 – 400 Å.
The use of catalytic active materials without support in a fine- dispersed state is conditioned by aiming to avoid pore-diffusion resistance. Pore-diffusion resistance is developed largely on industrial catalysts, in particular catalysts conversion of methane. The particles of active material are dispersed on all reaction volume and formed quasi structure of catalytic system. The parameters of such system can operate, changing the catalyst concentration and feed of a steam-gaseous mixture.
The mechanical activation of catalyst particles considerably influences the catalyst activity. Distortion of a crystal lattice, accumulation defects of structure, creation of high-activity centers (at breaking down of particles) are produced. The effect of these factors on particles of the catalyst enables the activity increase on some degree. One of aspects in enhancement activity of the catalyst in the process of mechanical activation is bound to formation of freshened surfaces. Anther aspect is formation of defects of crystalline pattern and egress them on a surface of crystallites. The formation of defects is the reason of increase reactionary activity matters (including catalytic) as a result of mechanical-chemical activation.
The process was carried out at the temperature of 800 – 850º С and pressure 1 atmosphere. The synthesis gas of different composition is obtained.
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