Effect of Si02/AI2O3 ratio on the conversion of methanol to olefins over molecular sieve catalysts
文献类型：期刊论文
| 作者 | Qian WANG1; Lei WANG2; Hui WANG1; Zengxi LI1; Xiangping ZHANG2; Suojiang ZHANG2; Kebin ZHOU1 |
| 刊名 | Frontiers of Chemical Science and Engineering
 |
| 出版日期 | 2011 |
| 卷号 | 5期号:1页码:79 |
| 关键词 | HZSM-5 SAPO-34 methanol-to-olefin(MTO) SiO2/Al2O3 ratio |
| ISSN号 | 2095-0179 |
| 英文摘要 | 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. |
| 语种 | 英语 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/47565]  |
| 专题 | 中国科学院过程工程研究所 |
| 作者单位 | 1.中国科学院大学 2.中国科学院过程工程研究所 |
| 推荐引用方式 GB/T 7714 | Qian WANG,Lei WANG,Hui WANG,et al. Effect of Si02/AI2O3 ratio on the conversion of methanol to olefins over molecular sieve catalysts[J]. Frontiers of Chemical Science and Engineering,2011,5(1):79. |
| APA | Qian WANG.,Lei WANG.,Hui WANG.,Zengxi LI.,Xiangping ZHANG.,...&Kebin ZHOU.(2011).Effect of Si02/AI2O3 ratio on the conversion of methanol to olefins over molecular sieve catalysts.Frontiers of Chemical Science and Engineering,5(1),79. |
| MLA | Qian WANG,et al."Effect of Si02/AI2O3 ratio on the conversion of methanol to olefins over molecular sieve catalysts".Frontiers of Chemical Science and Engineering 5.1(2011):79. |
入库方式： OAI收割
来源：过程工程研究所
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