モリブデン担持HZSM-5ゼオライト-酸化ランタン複合触媒を用いるメタンからアルキルベンゼンの直接合成-2 : ランタンの複合効果

概要

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The direct converting reaction of methane into alkylbenzenes over the mixed catalysts of Mo/HZSM-5 and La_2O_3 has been investigated. The degree of the activity and selectivity of the catalyst was examined in relation to the kneading procedure of La and Mo/HZSM-5, physically or chemically. High formation selectivity of divinylbenzene in the reaction was realized on the catalyst as made of the simultaneous adding of La and Mo to HZSM-5 (Mo-La/HZSM-5). In the results of NH_3-TPD for measuring of catalytic acidity, La has a neutralizing effect toward the acid of HZSM-5. For TPO analysis with the used catalyst, the amount of coke of Mo-La/HZSM-5 was hardly detected. The mixing effect of La to Mo/HZSM-5, in which high selectivity of divinylbenzene and the suppressing of coking was recognized in the reaction, was originated from the basic property of La.
旭川工業高等専門学校の論文
2004-03-20