English

S.E: Moradi

doi:10.15255/cabeq.2013.1886

Abstract

In this study, ordered mesoporous carbon nitride with high surface area and pore volume has been synthesized through a simple polymerization reaction between ethylene diamine and carbon tetrachloride in mesoporous silica media, and modified by Ni doping. The mesoporous carbon materials have been characterized by BET surface area and XRD analysis (low and wide angle). Adsorption data of H 2 on the mesoporous carbons were collected with PCT method for a pressure range up to 100 bar at 303 K. The effect of nickel doping and carbon-nitrogen (C-N) structure on hydrogen adsorption capacities was investigated. The amount of hydrogen adsorbed on nickel-doped mesoporous carbon nitride (Ni-MCN, 1.49 wt. %) and nickel-doped mesoporous carbon (Ni-MC, 1.24 wt. %) in contrast with mesoporous carbon nitride (MCN, 1 wt. %) and pristine mesoporous carbon (MC, 0.83 wt. %) has been enhanced.

Highlights

Development of hydrogen-fueled vehicles can bring economic and environmental benefits through decreased use of oil, and, a decrease in air pollution and other greenhouse gases.[1]
The MCM-48 molecular sieves were prepared as follows: 10 mL of tetraethyl orthosilicate (TEOS) was mixed with 50 mL of deionized water, and the mixture was vigorously stirred for 40 minutes at 333 K, 0.9 g of NaOH was added into the mixture, and at the same time, 0.19 g of NaF was added into the mixture
Hydrogen adsorption capacity is a linear function of pressure, which can be explained by Henry’s law. These results indicated that nickel was well dispersed on the surface of adsorbents

Summary

Introduction

Development of hydrogen-fueled vehicles can bring economic and environmental benefits through decreased use of oil, and, a decrease in air pollution and other greenhouse gases.[1]. There are different techniques to store hydrogen All those techniques have to meet the provisional criterion of the Department of Energy of the United States (DOE). The DOE has established different targets for onboard hydrogen storage systems, including the minimum ‘‘gravimetric’’ and ‘‘volumetric’’ capacity and the reversibility of the charging/ discharging processes. In the case of the European Hydrogen & Fuel Cell Technology Platform, it requested energy density values of 1.1 kWh L–1 in its Strategic Research Agenda (SRA) and Deployment Strategy (DS) documents, published at the end of 2004, and reviewed in 2005.2 These energy density values are equivalent to a volumetric hydrogen storage capacity of about 33 g H2 L–1. It is important to note that, in the case of materials-based technologies, to achieve system-level capacities, the gravimetric and volumetric capacities of the materi-

Methods

Results

Conclusion