Abstract
Cu-Co-containing cellulose-based carbon composite materials (Cu-Co/Cel) were formed by a matrix isolation method. Using X-ray diffraction (XRD), transmission electron microscopy (TEM), infrared-Fourier spectroscopy (IR-Fourier spectroscopy), and non-isothermal research methods, the physicochemical properties of the composites were established. The catalysts are nanosized particles distributed in a carbon matrix, containing fragments of a system of conjugated bonds (C=C-C=C) of various lengths. Cu-Co/Cel catalysts are active in the synthesis of alcohols from CO and H2, demonstrating high CO conversion (68%) and specific activity (17 mol CO gMe-1 s-1). Differences in the mechanism of alcohol formation from CO and H2 on cellulose-based composites and an oxide support (comparison catalyst) were shown by analyzing the distribution of synthesis products.
Highlights
The increased interest in obtaining a mixture of aliphatic alcohols from synthesis gas is due to the possibility of their use as additives to motor fuels, as it leads to an increase in the octane number without increasing the content of aromatic compounds
During the preparation of the Cu-Co/Cel catalyst and heat treatment, the crystalline structure of cellulose is destroyed with the formation of an amorphous phase, which leads to the disappearance in the patterns of signals related to crystalline cellulose (Figure 1)
The composite Cu-Co/Cel catalysts that we developed were prepared on the basis of cellulose by matrix isolation
Summary
The increased interest in obtaining a mixture of aliphatic alcohols from synthesis gas is due to the possibility of their use as additives to motor fuels, as it leads to an increase in the octane number without increasing the content of aromatic compounds. This reduces the toxicity of exhaust gases and leads to more complete combustion of fuel due to an increased oxygen concentration.[1,2]. Methanol can be processed to produce higher molecular weight alcohols or separated and sold. In 1914, Badische Anilin und Soda Fabrik Societas Europaea (BASF SE)[8]
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