Porous concrete as a template for the synthesis of porous carbon materials

Günther, D; Beckmann, Jens; Schöneich, Michael; Schmidt, Peer; Klepel, Olaf

doi:10.1016/j.carbon.2012.02.039

Cited by 15 publications

(8 citation statements)

References 6 publications

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“…Hence, it can be concluded that the highest carbon dioxide adsorption performance of HPCs-5-900 necessarily originated from its huge amount of micropore volume. Despite using fillers, such as SiO 2 (Feng et al, 2014;Marszewska and Jaroniec, 2017), MgO (Meng and Park, 2012) and porous concrete (Günther et al, 2012) in the preparation of porous carbon materials, nano-CaCO 3 particles showed preferable advantages over other oxide fillers for hierarchical porous structure because they served simultaneously as mesopore templates and micropore producers (Zhao et al, 2010;Liu et al, 2013). The decomposition products of nano-CaCO 3 particles results in nano-sized CaO particles and carbon dioxide gas, responsible for the formation of mesopores and micropores in carbon matrix, respectively.…”

Section: Carbon Dioxide Adsorption Isothermsmentioning

confidence: 99%

Constructing Hierarchical Porous Carbons With Interconnected Micro-mesopores for Enhanced CO2 Adsorption

et al. 2020

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A high cost-performance carbon dioxide sorbent based on hierarchical porous carbons (HPCs) was easily prepared by carbonization of raw sugar using commercially available nano-CaCO 3 as a double-acting template. The effects of the initial composition and carbonization temperature on the micro-mesoporous structure and adsorption performance were examined. Also, the importance of post-activation behavior in the development of micropores and synthesis route for the formation of the interconnected micro-mesoporous structure were investigated. The results revealed excellent carbon dioxide uptake reaching up 2.84 mmol/g (25 o C, 1 bar), with micropore surface area of 786 m 2 /g, micropore volume of 0.320 cm 3 /g and mesopore volume of 0.233 cm 3 /g. We found that high carbon dioxide uptake was ascribed to the developed micropores and interconnected micro-mesoporous structure. As an expectation, the optimized HPCs offers a promising new support for the high selective capture of carbon dioxide in the future.

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Section: Carbon Dioxide Adsorption Isothermsmentioning

confidence: 99%

Constructing Hierarchical Porous Carbons With Interconnected Micro-mesopores for Enhanced CO2 Adsorption

et al. 2020

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“…Porous concrete is advantageous over other templates because it is a low-cost construction material and is produced at an industrial scale. Furthermore, it is produced in monolithic form and can easily be shaped in any geometrical form using simple mechanic tools such as drills and saws [9,10]. So far, the production of cylinder and cubes has been reported [10].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Porous Carbon Monoliths Using Hard Templates

et al. 2016

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The preparation of porous carbon monoliths with a defined shape via template-assisted routes is reported. Monoliths made from porous concrete and zeolite were each used as the template. The porous concrete-derived carbon monoliths exhibited high gravimetric specific surface areas up to 2000 m2·g−1. The pore system comprised macro-, meso-, and micropores. These pores were hierarchically arranged. The pore system was created by the complex interplay of the actions of both the template and the activating agent as well. On the other hand, zeolite-made template shapes allowed for the preparation of microporous carbon monoliths with a high volumetric specific surface area. This feature could be beneficial if carbon monoliths must be integrated into technical systems under space-limited conditions.

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“…Sucrose is a kind of small organic molecules and has been widely used as precursor to prepare ordered mesoporous carbons using ordered silicas as hard-template [26][27][28][29][30][31][32][33][34][35]. In this paper, we report the preparation of porous carbons with sucrose as a precursor in the presence of USY zeolites via controlling the carbonization temperature and the mass ratio of zeolite to sucrose.…”

Section: Introductionmentioning

confidence: 99%