Graphene is a two-dimensional form of graphite made up of a single layer of carbon atoms in a honeycomb lattice that has attracted tremendous interest for its novel physical properties. A key challenge that has emerged is how to synthesize large amounts of graphene (large area or mass) at low cost. The objective of this project is to explore an entirely new method to exfoliate graphene from com...

This paper deals with the micromechanical modeling of carbon/carbon composites (C/C) fabricated by chemical vapor infiltration (CVI) of carbon fiber pre-form. The technology of CVI involves synthesis of pyrolytic carbon (PyroC) particles from hydrocarbon gas and their deposition on carbon fibers. The process results in formation of a porous pyrolytic carbon matrix filling space between the fibe...

The presence of pyrolytic carbon deposits can cause a number of serious problems in the operation of a coke oven. They can inhibit the flow of gas out of the oven; their removal may cause damage to the refractories and the coke pusher equipment, in particular when the deposition is extensive, and can affect the sealing of the oven so leading to undesirable emissions. Some plants burn off the ca...

Algae pyrolytic bio-oil contains a large quantity of N-containing components (NCCs), which can be processed as valuable chemicals, while the harmful gases also released during upgrading. However, characteristics NCCs in bio-oil, especially composition heavy (molecular weight ≥200 Da), have not been fully studied due to limitation advanced analytical methods. In this study, three kinds algae ric...

In many countries, Heavy Fuel Oil (HFO) is still a common fuel in industrial applications due to its low price and high energy density. However, the complex incomplete combustion of HFO results levels emissions efficiency, which causes search for additives improve properties without affecting heating value. The present paper aims use as an additive liquid fraction from pyrolysis polystyrene oil...

A short, efficient synthesis of 22-hydroxyacuminatine, starting from a readily accessible hydroxy pyridone, is presented; key steps include a Heck coupling with methyl pentadienoate, a flash vacuum pyrolytic cyclization, and a Friedländer condensation.

It is shown that for molecules of Allochromatium vinosum [NiFe]-hydrogenase adsorbed on a pyrolytic graphite electrode the nickel-iron active site catalyzes hydrogen oxidation at a diffusion-controlled rate matching that achieved by platinum.

We report that the substrate-free gas-phase graphene synthesis method produces clean and highly ordered graphene sheets that are similar in quality to the graphene obtained through the mechanical exfoliation of highly oriented pyrolytic graphite.