Development of MgAl2O4-stabilized, Cu-doped, Fe2O3-based oxygen carriers for thermochemical water-splitting

2016 ◽  
Vol 4 (1) ◽  
pp. 113-123 ◽  
Author(s):  
Q. Imtiaz ◽  
N. S. Yüzbasi ◽  
P. M. Abdala ◽  
A. M. Kierzkowska ◽  
W. van Beek ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
High Purity ◽  
The Other ◽  
Methane Reforming ◽  
Oxygen Carriers ◽  
Steam Methane Reforming ◽  
Steam Methane ◽  
Other Hand

The commercially dominating technology for hydrogen production (i.e. steam methane reforming) emits large quantities of CO2 into the atmosphere. On the other hand, thermochemical water-splitting cycles allow to produce high purity H2 while simultaneously capturing CO2.

Comparative Analysis of Advanced H2/Air Cycle Power Plants Based on Different Hydrogen Production Systems From Fossil Fuels

2004 ◽  
Author(s):  
M. Gambini ◽  
M. Vellini
Keyword(s):  
Hydrogen Production ◽  
Power Plants ◽  
Fossil Fuels ◽  
Coal Gasification ◽  
Fossil Fuel ◽  
H2 Production ◽  
Combined Cycle ◽  
Methane Reforming ◽  
Steam Methane Reforming ◽  
Steam Methane

In this paper two options for H2 production by means of fossil fuels are presented, evaluating their performance when integrated with advanced H2/air cycles. The investigation has been developed with reference to two different schemes, representative both of consolidated technology (combined cycle power plants) and of innovative technology (a new advance mixed cycle, named AMC). The two methods, here considered, to produce H2 are: • coal gasification: it permits transformation of a solid fuel into a gaseous one, by means of partial combustion reactions; • steam-methane reforming: it is the simplest and potentially the most economic method for producing hydrogen in the foreseeable future. These hydrogen production plants require material and energy integrations with the power section, and the best connections must be investigated in order to obtain good overall performance. The main results of the performed investigation are quite variable among the different H2 production options here considered: for example the efficiency value is over 34% for power plants coupled with coal decarbonization system, while it is in a range of 45–48% for power plants coupled with natural gas decarbonization. These differences are similar to those attainable by advanced combined cycle power plants fuelled by natural gas (traditional CC) and coal (IGCC). In other words, the decarbonization of different fossil fuels involves the same efficiency penalty related to the use of different fossil fuel in advanced cycle power plants (from CC to IGCC for example). The CO2 specific emissions depend on the fossil fuel type and the overall efficiency: adopting a removal efficiency of 90% in the CO2 absorption systems, the CO2 emission reduction is 87% and 82% in the coal gasification and in the steam-methane reforming respectively.

Plasma catalytic steam methane reforming for distributed hydrogen production

2019 ◽  
Vol 337 ◽  
pp. 69-75 ◽  
Author(s):  
Xiaobing Zhu ◽  
Xiaoyu Liu ◽  
Hao-Yu Lian ◽  
Jing-Lin Liu ◽  
Xiao-Song Li
Keyword(s):  
Hydrogen Production ◽  
Methane Reforming ◽  
Steam Methane Reforming ◽  
Steam Methane
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