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Your search keyword '"Ruliandini, Rizky"' showing total 4 results
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4 results on '"Ruliandini, Rizky"'

3. Molecular Simulation Study of CO2 Adsorption on Lanthanum-Based Metal Organic Framework.

Author

Putra, Ilham Hutama, Yulia, Fayza, Zulkarnain, Ihsan Ahmad, Ruliandini, Rizky, Zulys, Agustino, Mabuchi, Takuya, Gonçalves, William, and Nasruddin

Abstract

The environmental threat caused by CO2 emissions has become a serious concern throughout the world. The porous adsorption using metal-organic frameworks (MOFs) has attracted scientists due to the high feasibility potential for CO2 adsorption application. This study evaluated equilibrium CO2 adsorption with La-MOF using molecular dynamic (MD) and grand canonical Monte-Carlo (GCMC) simulations with La-MOF adsorbent based 2-pyrimidinecarbonitrile ligand to observe the molecular-level details in gas adsorption. The adsorption on La-MOF was observed at the pressure variations of 1–10 atm performed at 263–313 K, producing the CO2 uptakes of 10.47 wt %. The results show the accuracy of potential parameters was used to describe the interaction of adsorbate and adsorbent. Furthermore, RDF of CO2 molecules in La-MOF proved the role of ligands that can absorb more gases at closer distances; while at longer distances, lanthanum atoms play an important role in gas adsorption. [ABSTRACT FROM AUTHOR]

Published
2022
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4. Thermal conductivity of trimethylolpropane trioleate (TMPTO) based bio-lubricant using molecular dynamic simulation.

Author

Ruliandini, Rizky, Nasruddin, Tokumasu, Takashi, Supriyadi, Kusrini, Eny, and Nugraha, I Gde Dharma

Subjects
*THERMAL conductivity, *DYNAMIC simulation, *MOLECULAR dynamics, *BASE oils, *VEGETABLE oils, *POLYOLS, *LUBRICATION & lubricants, *METHYL formate
Abstract

With a biodegradation rate exceeding 90%, TMPTO, a polyol ester, is used as a base oil for bio-lubricant. Its excellent physicochemical properties, made TMPTO based bio-lubricants applied as metalworking fluids such as in hydraulics, chains and machines. In this study, TMPTO is derived from chemical reactions between Trimethylolpropane (TMP) and the methyl ester which synthesized from plant oils such as palm and Jatropha curcas. With hBN nanoparticles addition, it is expected improving its heat transfer capability. This study is predicting the thermal conductivity of TMPTO with various hBN nanoparticles concentration using the molecular dynamics simulation method. The thermal conductivity value is computed using Green-Kubo formalism, and it is applied to compute the heat flux vector based on a contribution from atoms in the specified group. Based on simulations, we get the best thermal conductivity value around 0.255 – 0.375 W/mK, which performed by TPMTO with a 0.4% hBN addition. [ABSTRACT FROM AUTHOR]

Published
2020
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