文献类型：期刊文献

英文题名：Preparation of 2-Methylnaphthalene from 1-Methylnaphthalene via Catalytic Isomerization and Crystallization

作者：Sun, Hao[1] Sun, Kang[1] Jiang, Jianchun[1] Gu, Zhenggui[2]

第一作者：孙昊

通信作者：Sun, H[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Jiangsu Key Lab Biomass Energy & Mat, Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Jiangsu, Peoples R China;[2]Nanjing Normal Univ, Coll Chem & Mat Sci, Jiangsu Prov Key Lab Mat Cycling & Pollut Control, Nanjing 210023, Jiangsu, Peoples R China

年份：2018

卷号：13

期号：3

起止页码：512-519

外文期刊名：BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS

收录：EI(收录号：20184606064512);Scopus(收录号：2-s2.0-85056263400);WOS:【ESCI(收录号:WOS:000450212100012)】；

基金：The project was supported by National Natural Science Foundation of China (31770629) and National Nonprofit Institute Research Grant of CAFINT (CAFYBB2017SY031).

语种：英文

外文关键词：Modified zeolite; 1-Methylnaphthalene; Isomerization; Crystallization; 2-Methylnaphthalene

摘要：Large amounts of residual 1-methylnaphthalene are generated when 2-methylnaphthalene is extracted from alkyl naphthalene. In order to transform waste into assets, this study proposes a feasible process for preparing 2-methylnaphthalene from 1-methylnaphthalene through isomerization and crystallization. The 1-methylnaphthalene isomerization was carried out in a fixed-bed reactor over mixed acids-treated HBEA zeolite. The results showed that acidic properties of catalysts and reaction temperature were associated with the 2-methylnaphthalene selectivity, yield and catalytic stability. At a high reaction temperature of 623 K, the 2-methylnaphthalene yield was 65.84 %, and the deactivation rate was much lower. The separation of reaction products was then investigated by two consecutive crystalliza- tion processes. Under optimal conditions, the 2-methylnaphthalene purity attained 96.67 % in the product, while the yield was 87.48 % in the refining process. Copyright (C) 2018 BCREC Group. All rights reserved