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Synthesis of Methyl Phosphonic Dichloride by Gas-solid Phase Catalyzing Method

Author: ZhuCuiXiao
Tutor: MaZiChuan;LinJin
School: Hebei Normal
Course: Physical and chemical
Keywords: Gas-solid catalytic Methyl CH3PCl2 Perovskite -type oxides Hexaaluminate Supported Catalysts Catalytic properties
CLC: O627.51
Type: Master's thesis
Year: 2008
Downloads: 78
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Abstract


In this thesis the perovskite-type oxides, hexaaluminate and individual supported metal catalyst is a catalyst, methane and phosphorus trichloride as raw materials, through the gas-solid phase catalytic synthesis of methyl chloride phosphine new technology, investigated several types of catalytic performance and the factors that affect the catalyst performance, and to determine the optimum conditions of catalyst used. The effects of a variety of catalytic properties of perovskite-type composite oxide. Filter out the catalytic effect is relatively good La , 0.9 K 0.1 the CoO 3 and La , 0.7 K 0.3 CoO 3 catalyst and do further research. Of reaction conditions on the catalytic effect of the stability of the catalyst and the catalyst lanthanum, potassium, cobalt three metal elements ratio on the catalytic performance of the problem. The results showed that potassium lanthanum cobalt catalysts in La 0.9 K 0.1 CoO 3 and La , 0.7 K < sub> 0.3 the CoO 3 having a relatively good catalytic activity, and its high temperature resistance, corrosion resistance were good. Experimental study to determine the best conditions for the two catalysts on the factors affecting the activity of the catalyst. The catalyst La 0.9, K , 0.1 CoO 3 catalyzed conditions: reactant ratio of the CH 4 : PCl < sub> 3 = 5:1 (molar ratio), catalyst mesh (40 to 60) mesh, the catalyst temperature of 300 ° C; catalyst La 0.7 K 0.3 the CoO 3 the catalytic optimum conditions: reactant ratio the CH 4 : the PCl 3 = 5:1 (molar ratio), catalyst Head number (40 6 0) mesh, catalytic temperature of 300 ° C. The experiment 3 (x = 0.1, 0.3 and 0.5), the catalytic activity measured La1-xKxCoO , lanthanum, potassium, cobalt the three metal element composition ratio on the catalytic performance of La1-xKxCoO 3 catalysts, three metal elements in different proportions, its catalytic properties are also different. To La 0.7 K 0.3 of CoO 3 catalytic effect best, while La 0.5 K 0.5 < / sub> CoO 3 catalytic effect of the worst. 11 O hexaaluminate catalyst LaMnAl is 19-alpha catalytic performance. The ScS catalytic effect on the reaction of a catalyst of the type prepared by calcination temperature, the results show that the calcination temperature of 1200 ° C when the catalytic effect of the catalyst is preferably. Experimental determination of the reaction conversion rate varies with temperature under different conditions, to determine the best conditions to use LaMnAl 11 O 19-α : reactant ratio of CH4: PCl3 = 10:1 (molar ratio), the catalyst mesh (40 6 0) Head catalyst temperature of 300 ° C. Experimental results show that the catalyst the LaMnAl 11 the O 19 -alpha for the reaction having a certain amount of catalytic activity, good stability, has a strong temperature resistance and corrosion resistance. Studied catalytic performance Mo/ZSM-5. The Mo/ZSM-5 No reaction exhibit good catalytic effect of the overall reaction conversion rate is low and the catalyst a Mo/ZSM-5 temperature resistance, corrosion resistance, poor. Although the highest catalytic activity of the noble metal catalyst, palladium, in a non-noble metal catalyst Ni Methane has the highest catalytic activity, however, the supported noble metal catalyst 1% Pd / AC and load non-noble metal catalyst is 5% Ni / Al 2 O 3 catalytic activity tests showed that the two catalysts showed significant catalytic effect on the reaction were not. Overall, the catalytic effect of several supported metal catalyst on the reaction were lower than the perovskite-type catalyst, and its high temperature resistance, corrosion resistance and stability are not as good as perovskite-type and hexaaluminate catalyst.

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CLC: > Mathematical sciences and chemical > Chemistry > Organic Chemistry > Elements in organic compounds > Section Ⅴ group elements, organic compounds ( nitrogen) > Phosphorus in organic compounds
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