Open Access. Powered by Scholars. Published by Universities.®

Physics Commons

Open Access. Powered by Scholars. Published by Universities.®

Series

Environmental Sciences

Masters Theses & Specialist Projects

Articles 1 - 1 of 1

Full-Text Articles in Physics

One-Step Laser-Induced Hydrogen Generation From Coal Powders In Water, Dovletgeldi Seyitliyev Jul 2017

One-Step Laser-Induced Hydrogen Generation From Coal Powders In Water, Dovletgeldi Seyitliyev

Masters Theses & Specialist Projects

This study presents a simple way of obtaining hydrogen gas (H2) from various ranks of coal, coke, and graphite using nanosecond laser pulses. Powder samples of coal and graphite with and without water were irradiated with 1064 nm and 532 nm pulses from an Nd: YAG laser for 45 minutes under air and argon atmospheres. It was observed that 532 nm laser pulses were more effective than 1064 nm pulses in gas generation and both were nonlinearly correlated with respect to the laser energy density. Mainly hydrogen (H2) and carbon monoxide (CO) were observed. The H2 to CO ratio shows ...