Hydrogen production by reforming methane in a corona inducing dielectric barrier discharge and catalyst hybrid reactor

Abstract

A novel corona inducing dielectric barrier discharge (CIDBD) and catalyst hybrid reactor was developed for reforming methane. This corona inducing technique allows dielectric barrier discharge (DBD) to occur uniformly in a large gap at relatively low applied voltage. Hydrogen production by reforming methane with steam and air was investigated with the hybrid reactor under atmospheric pressure and temperatures below 600°C. The effects of input power, O 2 /C molar ratio and preheat temperature on methane conversion and hydrogen selectivity were investigated experimentally. It was found that higher methane conversions were obtained at higher discharge power, and methane conversion increased significantly with input power less than 50 W; the optimized molar ratio of O 2 /C was 0.6 to obtain the highest hydrogen selectivity (112%); under the synergy of dielectric barrier discharge and catalyst, methane conversion was close to the thermodynamic equilibrium conversion rate. dielectric barrier discharge, methane conversion, corona inducing, hydrogen, catalyst Citation:Zhou Z P, Zhang J M, Ye T H, et al. Hydrogen production by reforming methane in a corona inducing dielectric barrier discharge and catalyst hybrid reactor.

Foam/fiber-structured catalysts: non-dip-coating fabrication strategy and applications in heterogeneous catalysis

“…These characteristics are particularly beneficial for very fast and heat/mass-transfer-controlled reactions ( Fig. 1) [4,5]. However, catalytic functionalization of the fiber/foambased supports remains challenging because the conventional washcoating technique suffers from nonuniformity and exfoliation of coatings as well as binder contamination.…”

“…As an example, the catalyst with a very low Pd-loading of only 0.25 wt% delivers *66 % CO conversion and *94 % DMO selectivity for a feed of CH 3 ONO/ CO/N 2 (10/14/76, vol%) at 150°C with a gas hourly space velocity of 3000 L kg -1 h -1 , and particularly, is stable for at least 200 h without deactivation. Moreover, the Al-structured AlOOH/c-Al 2 O 3 monoliths are also qualified for the other mass/heat transfer limited reactions at high throughput with low pressure drop, such as Pd-catalyzed CH 4 and vapor organic compounds (VOCs) combustion and Ni-catalyzed syngas methanation [15].…”

Thermal Fluid Analysis of Cold Plasma Methane Reformer

“…Employment of fuel cells [1][2][3] for power generation has been recognized as an important area where hydrogen could be used to achieve higher energy efficiencies and greatly reduce emissions. However, since hydrogen is not readily available, production of H 2 from reforming of different types of fuel such as methanol, ethanol, glycerol, methane (Natural gas/Biogas), E85, gasoline, diesel/biodiesel, etc.…”

“…In comparison, proton exchange membrane fuel cell (PEMFC) operates at lower operating temperature and it is less sensitive to operating conditions [5][6][7], but they require hydrogen input at purity level of 99% or higher. A series of PEMFC-based CHP have been proposed in the literature [3,6,8,9]. In some works on PEMFC-based CHP systems, a cold plasma reforming of methane is employed, as reported by Barelli and Ottaviano [10].…”