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Influence of support properties on selective oxidation of 2-methylnaphthalene on vanadia-molybdena based catalyst

Chinese Journal of Chemical Engineering 2023年第12期64卷 106-116页

作者： Yi Yu Fanfan Li Xiaocong Li Guoji Liu Li Xu Xingchuan Yang School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China School of Chemical and Printing-Dyeing Engineering Henan University of EngineeringZhengzhou 450007China Kaifeng Wujing Industrial Co.Ltd Kaifeng 475000China

In this work,the catalytic performance of vanadia-molybdena loaded on TiO_(2),MgO,ZSM-5,NaY and Mordenite was investigated in the selective oxidation of 2-methylnaphthalene(2-MN)to 2-naphthaldehyde(2-NA).Results show that strong interactions between supports(TiO2,ZSM-5)and active components can promote the dispersion of active *** VOx and MoOx are the main form on the catalyst surface,which is beneficial to the 2-NA ***,the corresponding weak interactions between Mordenite and active components may lead to the production of oxide crystals and the separation of active components,thus reducing the 2-NA *** to the high Na content,new crystal NaVMoO6 forms on the NaY surface,which is inactive in the *** V-Mo/TiO2,V and Mo can be inserted into the TiO2 lattice,changing the electronic structures of active components and support and improving the activity of surface oxygen *** investigation highlights an important consideration on supports properties when designing supported catalysts.

关键词： 2-methylnaphthalene Catalysis Partial oxidation Support Interactions

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The effect of operating conditions on acylation of 2-methylnaphthalene in a microchannel reactor

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Chinese Journal of Chemical Engineering 2018年第6期26卷 1307-1311页

作者： Wenpeng Li Suohe Yang Xiaoyan Guo Guangxiang He Haibo Jin Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology College of Chemical EngineeringBeijing Institute of Petrochemical Technology

Acylation of 2-methylnaphthalene(2-MN) is a very important reaction in organic synthesis,and the effiency of the continuous reactor is more than one of the batch *** that the Friedel–Crafts acylation is a rapid exothermic reaction,in this study,we perform the acylation of 2-MN in a stainless steel microchannel flow reactor,which is characterized by high mass and heat transfer *** effect of reactant ratio,mixing temperature,reaction temperature,and reaction time on product yield and selectivity were *** the optimal conditions,2-methyl-6-propionylnaphthalene(2,6-MPN) was obtained in 85.8% yield with 87.5% *** with the conventional batch system,the continuous flow microchannel reactor provides a more efficient method for the synthesis of 2,6-MPN.

关键词： Acylation Microchannel reactor 2-methylnaphthalene 2-Methyl-6-propionylnaphthalene

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Methylation of 2-methylnaphthalene with Methanol over NH_4 F and Pt Modified HZSM-5 Catalysts

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Chinese Journal of Chemical Engineering 2010年第5期18卷 742-749页

作者：赵亮郭新闻刘民王祥生宋春山 State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology Dalian 116012 China EMS Energy Institute and Department of Energy & Mineral Engineering Pennsylvania State University Park PA 16802 USA

Shape-selective methylation of 2-methylnaphthalene (2-MN) was carried out over NH 4 F and Pt modified HZSM-5 (SiO 2 /Al 2 O 3 = 83) catalysts in a fixed-bed down-flow reactor using methanol as methylating agent and 1,3,5-trimethylbenzene (1,3,5-TMB) as a solvent. Pt promoted HZSM-5 catalysts showed low concentration of coke-like polycondensed aromatics, NH 4 F modification decreased non-shape-selective acid sites. After Pt and NH 4 F co-modification, both conversion of 2-MN and selectivity to 2,6-DMN were improved. 6%NH 4 F/0.5%Pt/HZSM-5 catalyst exhibited 13.8% of 2-MN conversion with 6.2% of 2,6-DMN yield after 7 h time on stream (TOS), and 2,6-/2,7-DMN ratio of 1.7 after 10 h of TOS.

关键词： 2-methylnaphthalene methylation HZSM-5 2 6-dimethylnaphthalene NH 4 F/Pt/HZSM-5

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