Microwave-assisted fast vapor-phase transport synthesis of MnAPO-5 molecular sieves

Hui Shao, Jianfeng Yao, Xuebin Ke, Lixiong Zhang, Nanping Xu

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13 Citations (Scopus)

Abstract

MnAPO-5 was prepared by a microwave-assisted vapor-phase transport method at 180 A?C in short times. The products were characterized by X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectra, UVa??vis spectroscopic measurement, NH3-temperature-programmed desorption and esterification reaction. It was found that dry gels prepared with aluminum isopropoxide, phosphoric acid and manganese acetate could be transferred to MnAPO-5 in the vapors of triethylamine and water by the microwave-assisted vapor-phase transport method at 180 A?C for less than 30 min. The crystallization time was greatly reduced by the microwave heating compared with the conventional heating. The resulting MnAPO-5 exhibited much smaller particle sizes, higher surface areas and slightly higher catalytic activity in the esterification of acetic acid and butyl alcohol than those prepared by the conventional vapor-phase transport method and hydrothermal synthesis.
Original languageEnglish
Pages (from-to)956 - 959
Number of pages4
JournalMaterials Research Bulletin
Volume44
Issue number2
DOIs
Publication statusPublished - 2009
Externally publishedYes

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