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• W4385642223 abstract "The purpose of the study is to study the possibility of obtaining nanocarbons in a catalyst containing 15%Ni*5%Co*5%Fe*5%Cu*2% Mo/HSZ and to check the texture characteristics of the catalyst and nanocarbon. The research method is a catalyst containing 15%Ni*5%Co*5%Fe*5%Cu*2%Mo/HSZ prepared by precipitation of nitrates of the corresponding metals. The method of examination is electron microscopy. The morphological composition of the samples was performed by scanning electron microscopy (SEM) on a device JEOL JSM-6390 LA equipped with an energy dispersion X-ray microanalysis unit (EDX). We place the sample on double-sided carbon conductive tape glued to a copper-chrome table. Then we vacuum it in the instrument chamber. Microphotography recording was performed at 5-25 kV working distances and 8-10 mm under accelerating voltage. EDX spectra were recorded at 20 kV, with a working distance of 10 mm. The microstructure of the samples was examined by scanning electron microscopy. The JEOL 2100F used an accelerating voltage of 200 kV. The samples were dispersed, processed in ultrasound with methanol, and rubbed on a copper wall. The catalysts were preheated and passivated at 400 ℃ for 4 h at a 30 ml/min flow of nitrogen. Recycled catalysts are also 2% by volume in an oxygen-argon mixture. The O2/Ar reaction was inactivated at room temperature after cessation. The average size of the metal particles and the diameter of the carbon nanotubes were determined in the Image-ProPlus program. We calculated the average size of 500 particles for each catalyst, and 100 carbon nanotubes were processed to measure the average diameter of the carbon nanotubes. After synthesis and functionalization of carriers in the catalyst 15%Ni*5%Co*5%Fe*5%Cu*2%Mo/HSZ, the nanocarbons were condensed, and their outer diameter remained unchanged and amounted to 10-30 nm. Carbon nanotubes range in diameter from 5 to 15 nm, depending on the size of the metal particles, and in length from a few microns. The main conclusions are that the highly dispersed metal particles located at the ends of the nanotubes are an important factor in the growth of nanotubes. Larger iron particles are characterized by changes in the diameter of carbon nanotubes during growth. At the beginning of growth, the diameter of such a nanotube is 30...50 nm; however, it decreases to 5...15 nm." @default.
• W4385642223 created "2023-08-08" @default.
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• W4385642223 date "2023-01-01" @default.
• W4385642223 modified "2023-09-25" @default.
• W4385642223 title "Study of possibilities of getting nanocarbons from butadien-1.3 and texture characteristics of nanocarbons and catalyses" @default.
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• W4385642223 doi "https://doi.org/10.1051/e3sconf/202340104053" @default.
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