Ordered microporous carbons

This kind of carbon with such unique pore structure, extremely large surface area, and micropore volume has never been reported. Sections 3.3.3.1 and 3.3.3.2 will introduce the details of the production method of the ordered microporous carbons and compare the extraordinary pore structure of this carbon with commercial microporous carbons with a large surface area. In Section 3.3.3.3, it will be demonstrated that a similar ordered microporous carbon containing N atoms can be prepared by the template technique, and the N-doping influences the adsorption behavior of H20 molecules [136], In Section 3.3.3.4, the use of this unique carbon as an electrode for supercapacitor will be introduced [137],... 

FIGURE 3.25 Diffusion of electrolyte ions into the pores of a conventional activated carbon and the ordered microporous carbon prepared using the zeolite template. 

Kyotani, T. Template synthesis of ordered microporous carbons and their electric double layer capacitor performance. Prep. Pap.-Am. Chem. Soc., Div. Fuel Chem. 51, 2006 33-35. 

Hou, P.X., Orikasa, H., Itoi, H., Nishihara, H., and Kyotani, T. Densification of ordered microporous carbons and controlling their micropore size by hot-pressing. Carbon 45, 2007 2011-2016. 

Paredes, J.I., Martinez-Alonso, A., Yamazaki, T., et al. (2005). Structural investigation of zeolite-templated, ordered microporous carbon by scanning tunneling microscopy and Raman spectroscopy. Langmuir, 21, 8817-23. 

In order to improve the structural ordering of zeolite-templated carbons, Ma et al. have investigated systematically the synthesis of microporous carbons using zeolite Y as hard template. They used a two-step method to prepare an ordered, microporous carbon with high surface area, which retained the structural regularity of zeolite Y by filling as much carbon precursor as possible into the zeolite pores so as to prevent any subsequent partial collapse of the resulting carbon framework. In the... 

Ma et al. reported the synthesis of ordered microporous carbon having a rigid framework, but without the amorphous (002) peak, by heat treatment of the carbon/zeolite composite obtained by the two-step... 

Figure 4.3 HRTEM image and corresponding diffraction pattern (inset) of zeolite Y-templated ordered microporous carbon.Reprinted with permission from Z.X. Ma, T. Kyotani, Z. Liu, O. Terasaki and A. Tomita, Chem. Mater., Very High Surface Area Microporous Carbon with a Three-Dimensional Nano-Array Structure Synthesis and its Molecular Structure. 13, 4413. Copyright (2001) American Chemical Society...

Barata-Rodrigues et al. [73] reported that the CVD technique does not help improve the structural regularity of a zeolite-templated carbon. We indeed found that, when wet impregnation is followed by a CVD treatment, the XRD peak at 6° 20 can be observed, indicating the appearance of an ordered pore structure [75]. However, this XRD peak cannot be resolved for the carbon prepared without using the CVD technique [74]. An alternative route to the synthesis of ordered microporous carbons by using zeolite Y as template has also been described [88]. In addition, the use of other zeolite templates such as EMC-2 to improve structural regularity of replicated microporous carbons has been demonstrated... 

Nishihara H, Itoi H, Kogure T, Hou P-X, Touhara H, Okino F, Kyotani T (2009) Investigation of the ion storage/transfer behavior in an electrical double-layer capacitor by using ordered microporous carbons as model materials. Chem Eur J 15 5355-5363... 

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