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考察了β-甲基萘在HZSM-5及其修饰样品上的歧化反应。用P(C_6H_5)_3及Si(Ph_2)Cl_2修饰HZSM-5可消除样品的外表面活性中心。β-甲基萘的歧化反应和异构化反应发生在HZSM-5的不同部位。歧化反应在HZSM-5的孔道内进行且选择性地获得2,6-DMN,而异构化反应则发生在HZSM-5的外表面上,外表面活性中心的消除能减少DMN在外表面的二次化反应。
The disproportionation reaction of β-methylnaphthalene on HZSM-5 and its modified samples was investigated. Modification of HZSM-5 with P (C_6H_5) _3 and Si (Ph_2) Cl_2 can eliminate the active center of the outer surface of the sample. The disproportionation reaction and isomerization reaction of β-methylnaphthalene occur in different parts of HZSM-5. The disproportionation reaction is carried out in the pores of HZSM-5 and 2,6-DMN is selectively obtained, while the isomerization reaction occurs on the outer surface of HZSM-5, and the elimination of the active center on the outer surface can reduce the amount of DMN on the outer surface Minor reaction.