March 2011

Methods of water saturation estimation: Historical perspective

  One of the most important tasks in reservoir engineering is characterizing different parameters of the reservoir. Water saturation is a parameter which helps evaluating the volume of hydrocarbon in reservoirs. Determination of this parameter started from 1942 by integrating some well logs in clean sandstones. After that, many scientists introduced some equations to validate this procedure in shaly sands and...

Author(s): Andisheh Alimoradi, Ali Moradzadeh and Mohammad Reza Bakhtiari,

March 2011

Use of exhaust gas recirculation (EGR) and cyclonic separator for simultaneous NOx and PM reduction in DI diesel engines

  This study presents the results of exhaust gas recirculation (EGR) and cyclonic separator for simultaneous oxides of nitrogen (NOx) and particulate matter (PM) reduction in a direct injection (DI) diesel engine under different engine loads and speeds. There is a significant NOx reduction by EGR, but PM is hugely increased, especially at high EGR rate-high load conditions. A significant reduction in PM is...

Author(s): Murari Mohon Roy, S. M. Najmul Hoque, Md. Ariful Islam and Md. Mustafizur Rahman

March 2011

Dehyrogenation catalysts of higher normal paraffins on a nanocrystalline γ-Al2O3 support: Different impregnation sequences

  In this paper, high surface area nanocrystalline gamma alumina was synthesized by the sol-gel method using cationic surfactant. The Pt-based dehydrogenation catalysts consisting of promoters and support modifiers (Sn, In, Li and Fe) were prepared using the synthesized gamma alumina and employed in the dehydrogenation reaction of n-dodecane. The effects of different successive impregnation methods for Pt, Sn...

Author(s): Mandana Akia,, Seyed Mahdi Alavi, and Zi-Feng Yan