Efficient Acrylic Acid Production through Bio Lactic Acid Dehydration over NaY Zeolite Modified by Alkali Phosphates
作者： Junfeng Zhang , Yuling Zhao , Min Pan , Xinzhen Feng , Weijie Ji
DOI: 10.1021/CS100047P
关键词: Sodium lactate 、 Zeolite 、 Inorganic chemistry 、 Chemistry 、 Phosphate 、 Sodium 、 Acrylic acid 、 Pyridine 、 Lactic acid 、 Catalysis
摘要: Alkali phosphates-modified NaY zeolites were developed as catalysts for efficient conversion of lactic acid to acrylic acid. The catalytic performance was optimized in terms the type and loading alkali phosphates, reaction temperature, liquid hourly space velocity, concentration. A high yield 58.4% achieved at 340 °C over 14 wt % Na2HPO4/NaY. physicochemical properties investigated by various techniques including NH3-TPD, pyridine adsorption-FTIR, Raman, MAS 31P NMR. Introduction phosphates zeolite results a decline surface acidity. FTIR, NMR investigations on fresh used suggest that sodium phosphate is largely transformed lactate during reaction. situ generated function highly active species target
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