Synthesis of a carbon monolith with trimodal pores

Shi, Zhi‐Guo; Feng, Yu‐Qi; Xu, Lihua; Da, Shi‐Lu; Zhang, Ming

doi:10.1016/s0008-6223(03)00358-0

Cited by 62 publications

(38 citation statements)

References 18 publications

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“…The mesopore volume decreased with increasing degree of FA incorporation, as expected, but still remained high, above 1.3 cm 3 g ±1 in all cases, and was much higher than that recently reported for carbon monoliths containing one mode of mesopores prepared by successive impregnation±polymerization cycles using sucrose as the carbon precursor. [18] The much higher mesopore volumes in our case originate from the two modes of mesoporosity at low furfuryl alcohol content and the fact that the furfuryl alcohol polymerizes to a limited extent in the macropores of the silica scaffold, leading to an overall higher porosity of the monoliths.…”

Section: Full Papermentioning

confidence: 65%

Combined Surface and Volume Templating of Highly Porous Nanocast Carbon Monoliths

Smått

Lindén

2005

Adv. Funct. Mater.

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Nanocast carbon monoliths exhibiting a three‐ or four‐modal porosity have been prepared by one‐step impregnation, using silica monoliths containing a bimodal porosity as the scaffold. Combined volume and surface templating, together with the controlled synthesis of the starting silica monoliths used as the scaffold, enables a flexible means of pore‐size control on several length scales simultaneously. The monoliths were characterized by nitrogen sorption, scanning electron microscopy, transmission electron microscopy, and mercury porosimetry. It is shown that the carbon monoliths represent a positive replica of the starting silica monoliths on the micrometer length scale, whereas the volume‐templated mesopores are a negative replica of the silica scaffold. In addition to the meso‐ and macropores, the carbon monoliths also exhibit microporosity. The different modes of porosity are arranged in a hierarchical structure‐within‐structure fashion, which is thought to be optimal for applications requiring a high surface area in combination with a low pressure drop over the material.

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Section: Full Papermentioning

confidence: 65%

Combined Surface and Volume Templating of Highly Porous Nanocast Carbon Monoliths

Smått

Lindén

2005

Adv. Funct. Mater.

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“…[90] Using such silica monoliths as templates and furfuryl alcohol or sucrose as a carbon precursor, carbon monoliths with well-developed porosity are accessible. [88][89][90][91][92][93] Interestingly, the pore system of the nanocast carbon monoliths can be varied to three-or four-modal porosity by varying the loading amount of furfuryl alcohol in the one-step impregnation.…”

Section: Monolithic Carbonmentioning

confidence: 99%

Nanocasting: A Versatile Strategy for Creating Nanostructured Porous Materials

2006

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Nanocasting is a powerful method for creating materials that are more difficult to synthesize by conventional processes. We summarize recent developments in the synthesis of various structured porous solids, covering silica, carbon, and other nonsiliceous solids that are created by a nanocasting pathway. Structure replication on the nanometer length scale allows materials' properties to be manipulated in a controlled manner, such as tunable composition, controllable structure and morphology, and specific functionality. The nanocasting pathway with hard templates opens the door to the design of highly porous solids with multifunctional properties and interesting application perspectives.

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“…This pore structure would allow for the reaction/adsorption of molecules, with better mass transfer and a low pressure drop [205]. To prepare this structure, a porous silica monolith template is impregnated with a carbon polymer precursor, then carbonized [206][207][208]. Thereafter, the silica template can be removed with acid treatment, leaving behind a negative carbon monolith (walls of silica become the pores of the carbon structure) [183].…”

Section: Extruding Carbon Into Monolithsmentioning

confidence: 99%

Monoliths: A Review of the Basics, Preparation Methods and Their Relevance to Oxidation

2017

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Considerable research has been conducted on monolithic catalysts for various applications. Strategies toward coating monoliths are of equal interest and importance. In this paper, the preparation of monoliths and monolithic catalysts have been summarized. More specifically, a brief explanation for the manufacturing of ceramic and metallic monoliths has been provided. Also, different methods for coating γ-alumina, as a secondary support, are included. Techniques used to deposit metal-based species, zeolites and carbon onto monoliths are discussed. Furthermore, monoliths extruded with metal oxides, zeolites and carbon are described. The main foci are on the reasoning and understanding behind the preparation of monolithic catalysts. Ideas and concerns are also contributed to encourage better approaches when designing these catalysts. More importantly, the relevance of monolithic structures to reactions, such as the selective oxidation of alkanes, catalytic combustion for power generation and the preferential oxidation of carbon monoxide, has been described.

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Synthesis of a carbon monolith with trimodal pores

Cited by 62 publications

References 18 publications

Combined Surface and Volume Templating of Highly Porous Nanocast Carbon Monoliths

Combined Surface and Volume Templating of Highly Porous Nanocast Carbon Monoliths

Nanocasting: A Versatile Strategy for Creating Nanostructured Porous Materials

Monoliths: A Review of the Basics, Preparation Methods and Their Relevance to Oxidation

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