نتایج جستجو برای: supercritical carbon dixide

تعداد نتایج: 289203  

2003
Kenneth A. Nielsen Chris Clark Richard S. Cesaretti Gregory C. Ross

Technical development and commercial implementation of the supercritical fluid spray process have produced the surprising result that coating appearance and performance can actually be improved by removing 60 to 80 percent of the organic solvent from solvent-borne coating formulations. Unlike normal diluent solvents and water, the decompressive release of supercritical carbon dioxide during spr...

Journal: :Chemical communications 2003
Fabrice Stassin Jérôme Robert

Ring-opening polymerisation of epsilon-caprolactone in supercritical carbon dioxide is slowed down by a carbonation reaction, resulting in a positive volume of activation and a higher energy of activation as compared to polymerisation in a regular hydrocarbon solvent.

2011
Svetlana G. Milošević Žika D. Lepojević Zoran P. Zeković Senka S. Vidović

The effects of process parameters on the extraction of Ginkgo biloba L. leaves with supercritical carbon dioxide were investigated. The investigated parameters include particle size (mean particle diameter 0.19, 0.467 and 1.009 mm), solvent flow rate (1.58×10, 3.22×10 and 4.16×10 kg CO2/min) and pressure (100–300 bar), which were obtained by the response surface methodology (RSM) under the foll...

Hamid Bakhshi Hasan Pahlavanzadeh,

Supercritical carbon dioxide has gained increasing attention in food and pharmaceutical processing owing to the fact that it is environmentally inexpensive, not flammable, essentially non-toxic, and it has a convenient critical point. Also, it has been attracting much attention in many fields, such as extraction of sensitive materials and pharmaceutical processing and polymerization processes. ...

Journal: :Acta Periodica Technologica 2005

Journal: :ACS nano 2010
Candace K Chan Reken N Patel Michael J O'Connell Brian A Korgel Yi Cui

Composite electrodes composed of silicon nanowires synthesized using the supercritical fluid-liquid-solid (SFLS) method mixed with amorphous carbon or carbon nanotubes were evaluated as Li-ion battery anodes. Carbon coating of the silicon nanowires using the pyrolysis of sugar was found to be crucial for making good electronic contact to the material. Using multiwalled carbon nanotubes as the c...

Journal: :journal of chemical and petroleum engineering 2011
hasan pahlavanzadeh hamid bakhshi

supercritical carbon dioxide has gained increasing attention in food and pharmaceutical processing owing to the fact that it is environmentally inexpensive, not flammable, essentially non-toxic, and it has a convenient critical point. also, it has been attracting much attention in many fields, such as extraction of sensitive materials and pharmaceutical processing and polymerization processes. ...

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