Dimethyl Ether Conversion to Olefins over the SAPO-34/ZrO2 Catalysts: Effect of the ZrO2 Supporter

摘要:

文章预览

A SAPO-34 catalyst is well known to be one of the best catalysts for DME to olefins (DTO) reaction. Main products of the reaction were light olefins such as ethylene, propylene and butenes. However, the main problem is rapid deactivation of the SAPO-34 catalyst due to coke deposition during DTO reaction. In this study, various SAPO-34/ZrO2 catalysts added with ZrO2 were prepared for improving the lifetime and their physicochemical properties have been characterized by XRD and SEM. The DTO reaction over various SAPO-34/ZrO2 catalysts was carried out using a fixed bed reactor. All SAPO-34/ZrO2 catalysts showed similar activity and selectivity in the DTO reaction. The SAPO-34(9wt%)/ZrO2 catalyst was showed the best performance for the catalyst lifetime.

信息:

期刊:

编辑:

Weiguo Pan, Jianxing Ren and Yongguang Li

页数:

3681-3684

引用:

Y. H. Kim et al., "Dimethyl Ether Conversion to Olefins over the SAPO-34/ZrO2 Catalysts: Effect of the ZrO2 Supporter", Advanced Materials Research, Vols. 347-353, pp. 3681-3684, 2012

上线时间:

October 2011

输出:

价格:

$38.00

[1] C. W. Choi, W. I. Ju, S. H. Lee, Y. S. Baek, K. H. Row, The experimental study on the direct synthesis of DME(Dimethyl ether) in the fixed bed reactor, Trans. of the Korean Hydrogen and New Energy Society 15 (2004) 283-290.

[2] S. C. Baek, Y. J. Lee, K. W. Jun, Effect of water addition on the conversion of dimethyl ether to light olefins over SAPO-34, Korean Chem. Eng. Res. 44 (2006) 345-349.

[3] M. J. Vanniekerk, J. C. Fletcher, C. T. Oconnor, Effect of catalyst modification on the conversion of methanol to light olefins over SAPO-34, Appl. Catal., A 138 (1996) 135-145.

[4] D. Chen, H. P. Rebo, A. Grønvold, K. Moljord, A. Holmen, Methanol conversion to light olefins over SAPO-34: kinetic modeling of coke formation, Microporous Mesoporous Mater. 35-36 (2000) 121-135.

DOI: https://doi.org/10.1016/s1387-1811(99)00213-9

[5] X. Wu, R. G. Anthony, Effect of feed composition on methanol conversion to light olefins over SAPO-34, Appl. Catal., A 218 (2001) 241-250.

DOI: https://doi.org/10.1016/s0926-860x(01)00651-2

[6] Y. H. Song, H. J. Chae, K. E. Jeong, C. U. Kim, C. H. Shin, S. Y. Jeong, The effect of crystal size of SAPO-34 synthesized using various structure directing agents for MTO reaction, J. Korean Ind. Eng. Chem. 19 (2008) 559-567.

[7] C. D. Chang, Hydrocarbon from methanol, Catal. Rev. –Sci. Eng. 25 (1983) 1-118.