期刊
APPLIED CATALYSIS A-GENERAL
卷 528, 期 -, 页码 59-66出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcata.2016.09.017
关键词
Isosorbide; Sorbitol; Zirconium phosphate; Dehydration
资金
- Program for National Natural Science Foundation of China [21303185]
- Liaoning Excellent Talents in University [LJQ2014053]
- Open Project Program of the State Key Laboratory of Fine Chemicals, Dalian University of Technology [KF1416]
A porous zirconium phosphate catalyst prepared by hydrothermal method was studied for the dehydration of sorbitol to isosorbide under water-free conditions. Various characterization techniques such as XRD, Raman, SEM, NH3-TPD and Pyridine adsorption etc were conducted to determine the textural and acidic properties of the catalyst so as to build the relationship between catalytic performance and catalyst structure. In screening tests with other solid acids, the as-prepared ZrP sample exhibited the promising catalytic behavior for isosorbide production probably assigned to its high surface area, porous structure and the adequate Bronsted acid sites. Full sorbitol conversion with as high as 73% isosorbide selectivity could be obtained at mild conditions (210 degrees C, 2 h). Noticeably, the ZrP catalyst could be repeatedly used without any obvious deactivation. Generally, the ZrP catalyst studied in this work possessed a great potentiality as an efficient heterogeneous solid acid catalyst for isosorbide production to diminish the application of homogeneous mineral acid. (C) 2016 Elsevier B.V. All rights reserved.
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