A novel system for high-purity hydrogen production based on solar thermal cracking of methane and liquid-metal technology: Thermodynamic analysis

2018 ◽  
Vol 157 ◽  
pp. 562-574 ◽  
Author(s):  
Zhang-Jing Zheng ◽  
Yang Xu
Keyword(s):  
Hydrogen Production ◽  
Liquid Metal ◽  
Thermodynamic Analysis ◽  
High Purity ◽  
Thermal Cracking ◽  
Solar Thermal ◽  
High Purity Hydrogen

Thermodynamic Analysis of Glycerol Steam Reforming using Calcium Oxide and Iron Oxide for High-Purity Hydrogen Production

2012 ◽  
Vol 10 (1) ◽  
Author(s):  
Ligang Wei ◽  
Kunlan Li ◽  
Yingchong Ma
Keyword(s):  
Hydrogen Production ◽  
Thermodynamic Analysis ◽  
Steam Reforming ◽  
High Purity ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Carbon Formation ◽  
Minimization Method ◽  
Reformate Gas ◽  
High Purity Hydrogen

Abstract A thermodynamic analysis of glycerol steam reforming in the presence of a CO2 adsorbent (CaO) and solid oxygen transfer material (Fe2O3) for high-purity hydrogen production was performed using the Gibbs free energy minimization method. CO in reformate gas was reduced via CO oxidation by Fe2O3 into CO2 coupled with in situ CO2 capture by CaO. The high-purity hydrogen produced without using a downstream reactor has potential application in proton exchange membrane fuel cells (PEMFCs). The influence of temperature (300–1000 °C), pressure (0.1–1.0 MPa), and mole ratios of H2O/glycerol (1–10), CaO/glycerol (0–6), and Fe2O3/glycerol (0–6) on equilibrium gas compositions and carbon formation was evaluated. The produced gas (99.8 mol% H2 and 12.8 ppm CO) was obtained without carbon formation under the optimal conditions (450 °C, 0.1 MPa, CaO/glycerol mole ratio of 3, Fe2O3/glycerol mole ratio of 3 and H2O/glycerol mole ratio of 10), and can be directly used in PEMFCs. However, further optimizations are needed.

A Strategy for Preparing High-efficiency and Economical Catalytic Electrodes toward Overall Water Splitting

Nanoscale ◽  
2021 ◽  
Author(s):  
Dongxue Yao ◽  
Lingling Gu ◽  
Bin Zuo ◽  
Shuo Weng ◽  
Shengwei Deng ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Production Technology ◽  
High Purity ◽  
High Efficiency ◽  
Energy Development ◽  
Overall Water Splitting ◽  
Important Field ◽  
High Purity Hydrogen

The technology of electrolyzing water to prepare high-purity hydrogen is an important field in today's energy development. However, how to prepare efficient, stable, and inexpensive hydrogen production technology from electrolyzed...

High purity hydrogen production via aqueous phase reforming of xylose over small Pt nanoparticles on a γ-Al2O3 support

2020 ◽  
Vol 45 (27) ◽  
pp. 13848-13861 ◽  
Author(s):  
Yoondo Kim ◽  
Minkyeong Kim ◽  
Hyangsoo Jeong ◽  
Yongmin Kim ◽  
Sun Hee Choi ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Aqueous Phase ◽  
High Purity ◽  
Pt Nanoparticles ◽  
Aqueous Phase Reforming ◽  
Al2o3 Support ◽  
High Purity Hydrogen
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