郭新闻

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教授

博士生导师

硕士生导师

主要任职:盘锦校区管委会副主任兼教学与科研工作部部长

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:化工学院

学科:工业催化. 物理化学

办公地点:化工实验楼B427

联系方式:18641143913

电子邮箱:guoxw@dlut.edu.cn

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Oxalic Acid Modification of beta Zeolite for Dehydration of 2-(4 '-Ethylbenzoyl) Benzoic Acid

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论文类型:期刊论文

发表时间:2017-08-09

发表刊物:252nd National Meeting and Exposition of the American-Chemical-Society (ACS)

收录刊物:SCIE、EI、CPCI-S、Scopus

卷号:56

期号:31

页面范围:8850-8856

ISSN号:0888-5885

摘要:A commercial beta zeolite was modified with dilute oxalic acid solutions, and evaluated in the catalytic dehydration of 2-(4'-ethylbenzoyl) benzoic acid (BEA) to produce 2-ethylanthraquinone (2-EAQ). The modified zeolite samples were characterized by X-ray diffraction, Ar-phys-isorption, X-ray fluorescence spectroscopy, Fourier transform infrared spectroscopy, Al-27 MAS NMR and ammonia temperature-programmed desorption. The results show that the modified samples maintain the BEA topology and microporous textural properties. However, dealumination, caused by the modification, leads to dramatic variations in acid properties, including the amount of acid sites, ratio of strong to weak acid sites, and the ratio of Bronsted to Lewis acid sites. The variations in acidity enhance the catalytic performance of BEA dehydration to produce 2-EAQ. The catalytic selectivity was tripled, and the activity increased significantly.