## ملخص

A brief review is presented for the pre-history and discovery of fullerenes. Single-site potentials with parameters proposed by Girifalco was used to describe the interactions of the fullerene molecules C_{70} and C_{96}. We present theoretical model for calculating the thermodynamic properties of liquid for both C_{70} and C_{96} by means of an improved equation of state (EOS), in which the particles are interacting via pair wise interaction composed of suitable linear combination of three Yukawa functions (3YK). The proposed equation of state provides a powerful mathematical formalism for the Helmholtz free energy and the pressure within the series mean-spherical approximation (SMSA) which are the basic ingredients to compute the liquid-vapour coexistence curve of C_{70} and C_{96} as well as the other thermodynamic properties for the bulk liquid and the vapour phases. The comparisons with Gibbs ensemble Monte Carlo (GEMC) simulations and the self-consistent Ornstein-Zernike approximation (SCOZA) were carried out. The estimated critical parameters for both C_{70} and C_{96} are T_{C}=2176K, ρ_{C}=0.44nm^{-3}, P_{C}=51.64 bars and T_{C}=2477K, ρC=0.32nm^{-3}, P_{C}=44.28 bars respectively. It is to be noted that the obtained results of the thermodynamic properties along the binodal curves of C_{70} and C _{96} are exhibit interesting features.

اللغة الأصلية | English |
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عنوان منشور المضيف | Proceedings of the Fifth Saudi Physical Society Conference, SPS5 |

الصفحات | 173-184 |

عدد الصفحات | 12 |

المعرِّفات الرقمية للأشياء | |

حالة النشر | Published - 2011 |

الحدث | 5th Saudi Physical Society Conference, SPS5 - Abha, Saudi Arabia المدة: أكتوبر ٢٥ ٢٠١٠ → أكتوبر ٢٧ ٢٠١٠ |

### سلسلة المنشورات

الاسم | AIP Conference Proceedings |
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مستوى الصوت | 1370 |

رقم المعيار الدولي للدوريات (المطبوع) | 0094-243X |

رقم المعيار الدولي للدوريات (الإلكتروني) | 1551-7616 |

### Other

Other | 5th Saudi Physical Society Conference, SPS5 |
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الدولة/الإقليم | Saudi Arabia |

المدينة | Abha |

المدة | ١٠/٢٥/١٠ → ١٠/٢٧/١٠ |

## ASJC Scopus subject areas

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## بصمة

أدرس بدقة موضوعات البحث “Thermodynamic properties of the two higher fullerites C_{70}and C

_{96}along the liquid-vapor coexistence curve'. فهما يشكلان معًا بصمة فريدة.