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2-Butanol Dehydrogenation over Copper-Based Catalysts

Author: CuiJing
Tutor: WangZhenLv
School: Jilin University
Course: Physical and chemical
Keywords: Copper Butanol Dehydrogenation
CLC: O643.36
Type: Master's thesis
Year: 2010
Downloads: 172
Quote: 0
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Abstract


In this paper, for the purpose of industrial application of a series of copper as the main catalyst for a more in -depth and meticulous research . Mainly investigated by impregnation and coprecipitation of copper-based catalyst prepared by two methods butanol dehydrogenation reaction in the catalytic performance, while by using XRD, TPD, TPR and other catalysts were characterized by means of study of the catalyst surface properties and catalytic performance relationship . And later tried exploratory experiments and forming the catalyst Nano Cu-ZnO catalyst was investigated in Butanol Catalytic dehydrogenation behavior . Catalysts prepared by impregnation experiments , the reaction temperature is 270 ℃, pressure , space velocity of the liquid under the conditions of 3h-1 , Cu-ZnO/Na-SiO2 butanol dehydrogenation catalyst has the best catalytic performance, Cu loading of 8%, Cu / ZnO (mol) of 2/1, Na loading of 0.5 %, the resulting conversion of 93.6% sec-butyl alcohol , methyl ethyl ketone selectivity of 98.0% . Catalysts prepared by coprecipitation experiments, effects of catalyst preparation conditions on the catalyst in the reaction activity. The results show that the precipitation temperature is 80 ℃, calcination temperature was 450 ℃ is the best preparation conditions . Under the above reaction conditions , the prepared Cu-ZnO-MgO -butanol dehydrogenation catalyst in the highest activity , wherein Cu / ZnO (mol) of 1/3, MgO content is 0.3%. The resulting conversion was 93% sec-butyl alcohol , methyl ethyl ketone and 99.8% selectivity . After reduction method using high temperature catalyst life and try to evaluate and compare the life of industrial catalysts . The results showed that , Cu-ZnO/Na-SiO2 life of the catalyst life of the catalyst below the industry ; the Cu-ZnO catalyst life is close to or higher than the service life of industrial catalysts . We tried to explore the nature of the active catalyst for forming the highest experiments and preparation of nano Cu-ZnO catalyst , and investigated it for Butanol Catalytic dehydrogenation performance. The results show that nano Cu - ZnO improves the interaction between the catalytic activity and stability , and the use of SiO2 C and Al2O3 formed on the catalyst not only has a high conversion rate of sec-butyl alcohol and methyl ethyl ketone selectivity, but also has a strong mechanical strength.

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CLC: > Mathematical sciences and chemical > Chemistry > Physical Chemistry ( theoretical chemistry ),chemical physics > Chemical kinetics,catalysis > Catalytic > Catalyst
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