Petroleum Science >2019,??Issue 1:??161-172 DOI: https://doi.org/10.1007/s12182-018-0278-2
Catalytic performance of Cu- and Zr-modified beta zeolite catalysts in the methylation of 2-methylnaphthalene Open?Access
文章信息
作者：Fatih Gülec, Farooq Sher and Ali Karaduman
作者單位：
Department of Chemical and Environmental Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, UK,Department of Chemical and Environmental Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, UK and Department of Chemical Engineering, Faculty of Engineering, Ankara University, Ankara 06100, Turkey
投稿時(shí)間：2018-01-09
引用方式：Güle?, F., Sher, F. & Karaduman, A. Pet. Sci. (2019) 16: 161. https://doi.org/10.1007/s12182-018-0278-2
文章摘要
2,6-Dimethylnaphthalene (2,6-DMN) is a commercially important chemical for the production of polyethylenenaphthalate and polybutylene naphthalate. However, its complex synthesis procedure and high production cost significantly reduce the use of 2,6-DMN. In this study, the synthesis of 2,6-DMN was investigated with methylation of 2-methylnaphthalene (2- MN) over metal-loaded beta zeolite catalysts including beta zeolite, Cu-impregnated beta zeolite and Zr-impregnated beta zeolite. The experiments were performed in a fixed-bed reactor at atmospheric pressure under a nitrogen atmosphere. The reactor was operated at a temperature range of 400–500 C and varying weight hourly space velocity between 1 and 3 h-1. The results demonstrated that 2,6-DMN can be synthesized by methylation of 2-MN over beta type zeolite catalysts. Besides 2,6-DMN, the product stream also contained other DMN isomers such as 2,7-DMN, 1,3-DMN, 1,2-DMN and 2,3- DMN. The activity and selectivity of beta zeolite catalyst were remarkably enhanced by Zr impregnation, whereas Cu modification of beta zeolite catalyst had an insignificant effect on its selectivity. The highest conversion of 2-MN reached 81%, the highest ratio of 2,6-DMN/2,7-DMN reached 2.6 and the highest selectivity of 2,6-DMN was found to be 20% by using Zr-modified beta zeolite catalyst.
關(guān)鍵詞
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Methylation, Naphthalene derivatives, Polyethylenenaphthalate, 2,6-Dimethylnaphthalene and beta zeolite catalyst