Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume 41, Issue -, Pages 151-157Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2016.07.019
Keywords
ZnAl2O4; SO2; In situ FTIR; Surface properties
Funding
- National Natural Science Foundation of China [21347001, 21567018]
- Inner Mongolia Natural Science Foundation [2013MS0203]
- Research Fund for the Program of Higher Education of Inner Mongolia [NJZY13005]
- Program of Higher-level Talents of Inner Mongolia University [125113]
- Open Foundation of Key Laboratory of Industrial Ecology and Environmental Engineering (MOE)
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A type of uniform ZnAl2O4 nanospheres was selectively synthesized via a facile solvothermal method and their size was controlled to be 320-450 nm in diameter. It exhibits excellent SO2 adsorption capacity. Both physical structure and surface basicity were determined to play important roles in SO2 adsorption process. In situ FTIR investigation revealed that adsorbed SO2 molecules formed surface bisulfite, sulfite, and bidentate binuclear sulfate. The CO2-TPD results revealed the SO2 adsorption capacity of the catalysts correlated closely with their basicity sites. The mechanisms for SO2 adsorption and transformation have been discussed in detail. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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