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Explore Turbostratic Carbon, Crystalline Order and more!

Graphite structure with correlated graphine layers has high 3-D crystalline order. A 2-D honeycomb structure of uncorrelated graphene layers is called turbostratic carbon. There is no interlayer site correlation between adjacent graphene planes.

Turbostratic carbons feature planes of atoms arranged at different angles and with lots of defects at the edges that make the atoms more accessible for chemical reactions. Graphite, in contrast, has a more ordered structure and is less reactive by a factor of about 1,000.

Schematic diagrams exhibiting (a) a 3-D graphite lattice (b) a turbostratic structure, and (c) a schematic structural model of the outer two layers for a multiwall carbon nanotube. The electronic structure of turbostratic graphite, a zero-gap semiconductor, is qualitatively different from that of ideal graphite, a semimetal. Crystalline disorder and interlayer spacing introduces an effective energy gap.

Turbostratic crystallite structure is the more porous intermediate stage between amorphous carbon and graphene sheet formation. This work is licensed under a Creative Commons Attribution 3.0 United States License - http://creativecommons.org/licenses/by/3.0/us/ Original Author: Philip Small. Attribution Party: Land Profile, Inc. URI: http://www.landprofile.com

In single crystal graphite (top), the carbon atoms are bonded in hexagonal arrays that are stacked in ordered layers. Turbostratic carbon (bottom), however, has disordered stacking through random rotation or displacement of ordered layers. This disordered structure is what gives pyrolytic turbostratic carbon its unique mechanical properties.

Shows transformation of carbon structure with temperature: (a) amorphous (non-crystaline) at 400 deg C, (b) turbostratic crystallites at 800 deg C, and (c) graphene sheet structure (graphite) dominant above 1100 deg C.

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Batch Kiln 500-MK 1 for Large Scale Biochar Production... The 500 series batch kiln is a commercial unit that produces up to 750 kg of biochar per burn. The kiln is built in to a 20 ft container which allows it to be transported anywhere a truck can reach. The kiln consists of two kiln bodies (retorts) with a capacity of 6 cubic meters each, and a central combustor or burner that provides heat to both. The kiln uses a two stage process.

Research on the interaction between biochar and AMF shows that the biochar can enhance AMF activity but that there are some conditions where adding biochar can inhibit it. It is important to understand the criteria needed in order for this relationship to be positive. 1 Biochar should be produced at temps of 450-500oC. 2 Biochar should be made of herbaceous rather than non herbaceous material (for example brush rather than nut kernals) 3 Biochar should be finely crushed before use.