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DOI: Catalytic Synthesis Of Acetone And Acetaldehyde From Acetylene In Fluoride-Based Catalysts
Fayzullaev N.I , Samarkand State University, Samarkand, Uzbekistan Akmalaev K.A , Satbayev University, Almaty, Kazakhstan Karjavov A , Samarkand State University, Samarkand, Uzbekistan Akbarov H.I , National University Of Uzbekistan, Uzbekistan E.Qobilov , Satbayev University, Almaty, KazakhstanAbstract
In the study, the catalytic hydration reaction of acetylene in the presence of catalysts based on local raw materials was carried out under stationary conditions in a flow reactor made of stainless steel with a diameter of 25 mm and a height of 1000 mm. The reaction products were analyzed chromatographically. In the presence of the created fluoride catalyst, the conversion of acetylene is 75-80%, the yield of acetaldehyde is 93%, the yield of acetone is 2.5%. The reason for the high activity of cadmium-zinc-aluminum catalysts is explained by the fact that they form the active center of ox fluorides on the surface of the catalyst. The effect of temperature, volumetric velocity, acetylene: water ratio, etc. on acetaldehyde yield in the presence of the selected catalyst was studied. When the effect of temperature was studied in the range of 300–440oC, an increase in acetylene conversion and a decrease in acetaldehyde selectivity were found with increasing temperature. X-ray studies have established that cadmium-chromo-fluoro-aluminum catalysts have high activity in polymorphic-crystalline state.
Keywords
Acetylene,, hydration,
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Copyright (c) 2020 Fayzullaev N.I, Akmalaev K.A, Karjavov A, Akbarov H.I, E.Qobilov
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