Salix viminaliswood as a new precursor for manufacturing of carbon molecular sieves for effective methane/nitrogen separation

• Autorzy: Olga Gorska , Aleksandra W. Cyganiuk , Andrzej Olejniczak , Anna Ilnicka , Jerzy P. Lukaszewicz
• Języki publikacji: EN

Abstrakty

EN

Separation of a methane/nitrogen gas mixture was investigated by means of carbon molecular sieves (CMS) obtained from a newly discovered “green” resource: Salix viminalis. This plant grows quickly, yields hard wood and is frequently cultivated for energy purposes (renewable green fuel). Unconventional applications such as charcoal fabrication using this sort of wood are very rare. Carbonization of the wood (1–3 h, 600–700°C) yields carbons with a very narrow pore size distribution (determined by N2 adsorption at -196°C) resembling a perfect CMS. The diameter of most pores (ca. 0.8 nm) is comparable to the size of simple molecules, thus enabling separation. The sieving effect was proven in an industrially important process of CH4/N2 separation at 30–70°C. Despite relatively minor differences of the size of the molecules, the experiment demonstrated that separation factors are placed in the range 3.64–10.20. Additional experiments involving krypton proved that the separation mechanism is based on a geometric factor i.e. the known size and shape of the molecules under separation.

EN

Słowa kluczowe

EN

carbon molecular sieve; methane/nitrogenseparation; Salix viminalis; carbonization

• Czasopismo: Open Chemistry
• Rocznik: 2015
• Tom: 13
• Numer: 1

Daty

otrzymano

2014-04-29

zaakceptowano

2014-11-07

online

2015-04-01

Twórcy

autor

Olga Gorska

• Faculty of Chemistry, Nicholas Copernicus University, ul. Gagarina
  11, 87-100 Torun, Poland

autor

Aleksandra W. Cyganiuk

• Faculty of Chemistry, Nicholas Copernicus University, ul. Gagarina
  11, 87-100 Torun, Poland

autor

Andrzej Olejniczak

• Flerov Laboratory of Nuclear Reactions, Joint
  Institute for Nuclear Research, Dubna, 141980, Russia

autor

Anna Ilnicka

• Faculty of Chemistry, Nicholas Copernicus University, ul. Gagarina
  11, 87-100 Torun, Poland

autor

Jerzy P. Lukaszewicz

• Faculty of Chemistry, Nicholas Copernicus University, ul. Gagarina
  11, 87-100 Torun, Poland

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Identyfikatory

DOI

10.1515/chem-2015-0091