effectofsi02ai2o3ratioontheconversionofmethanoltoolefinsovermolecularsievecatalysts

CAS OpenIR

	effectofsi02ai2o3ratioontheconversionofmethanoltoolefinsovermolecularsievecatalysts
	Qian WANG 1; Lei WANG 2; Hui WANG 1; Zengxi LI 1; Xiangping ZHANG 2; Suojiang ZHANG 2; Kebin ZHOU 1
	2011
Source Publication	frontiersofchemicalscienceandengineering
ISSN	2095-0179
Volume	5 Issue:1 Pages:79
Abstract	A series of SAPO-34 molecular sieves with different SiO_2/Al_2O_3 ratios have been synthesized for the methanol-to-olefin (MTO)reaction.Their physico-chemical properties are characterized by various techniques such as X-ray diffraction (XRD),scanning electron microscopy(SEM),energy dispersive spectroscopy (EDS),Fourier transform infrared spectroscopy (FT-IR)and N2 adsorption-desorption.The results are compared with those of the commercial HZSM-5,which show that the crystallinity and particle diameter of SAPO-34 as well as HZSM-5 increase with SiO_2/Al_2O_3 ratio.The variation of BET surface area of SAPO-34 is different from that of HZSM-5 and the sample with SiO_2/Al_2O_3 ratio of 0.4 exhibits the highest BET surface area.FT-IR spectra indicate that HZSM-5 has both Bronsted and Lewis acid sites and Bronsted acid sites are stronger,whereas SAPO-34 samples are dominated only by Lewis acid sites.When the SiO_2/Al_2O_3 ratio increases,propylene and butylenes become the predominant product of the MTO reaction over HZSM-5.In contrast,the main products of this reaction catalyzed by SAPO-34 are ethylene and propylene.According to the product distribution,the reaction mechanism over HZSM-5 catalysts is proposed.
Language	英语
Document Type	期刊论文
Identifier	http://ir.ipe.ac.cn/handle/122111/32338
Collection	中国科学院过程工程研究所
Affiliation	1.中国科学院大学 2.中国科学院过程工程研究所
Recommended Citation GB/T 7714	Qian WANG,Lei WANG,Hui WANG,et al. effectofsi02ai2o3ratioontheconversionofmethanoltoolefinsovermolecularsievecatalysts[J]. frontiersofchemicalscienceandengineering,2011,5(1):79.
APA	Qian WANG.,Lei WANG.,Hui WANG.,Zengxi LI.,Xiangping ZHANG.,...&Kebin ZHOU.(2011).effectofsi02ai2o3ratioontheconversionofmethanoltoolefinsovermolecularsievecatalysts.frontiersofchemicalscienceandengineering,5(1),79.
MLA	Qian WANG,et al."effectofsi02ai2o3ratioontheconversionofmethanoltoolefinsovermolecularsievecatalysts".frontiersofchemicalscienceandengineering 5.1(2011):79.

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