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Model-based control design for H2 purity regulation in high-pressure alkaline electrolyzers
(Pergamon-Elsevier Science Ltd, 2021-05)
This paper proposes two control strategies that mitigate the cross contamination of H2 and O2 in a high-pressure alkaline electrolyzer, which consequently increases the supplied gases purity: one based on a decoupled PI ...
Optimal sizing of a grid-assisted wind-hydrogen system
(Pergamon-Elsevier Science Ltd, 2018-06)
Hydrogen obtained from water electrolysis in addition to being sustainable becomes commercially competitive when a high degree of purity is sought. Ideally such purity is achieved by keeping the electrolyzer on a constant ...
Sorption-enhanced ethanol steam reforming process in a fixed-bed reactor
(American Chemical Society, 2018-08)
Sorption-enhanced ethanol steam reforming is an alternative to nonrenewable sources to produce high purity hydrogen by simplifying the purification train required to obtain cell grade hydrogen. In this work, NiMgAl ...
Niobium hydrogenation process Effect of temperature and cooling rate from the hydrogenation temperature
(ELSEVIER SCI LTD, 2011)
High-purity niobium powder can be produced via the hydrogenation and dehydrogenation processes The present work aimed at the effect of temperature and cooling rate conditions on the niobium hydrogenation process using ...
Modeling and optimal design of cyclic processes for hydrogen purification using hydrides-forming metals
(Elsevier, 2014-11)
Hydrogen at high purity degrees can be obtained by using the well-known Pressure Swing Adsorption (PSA) process. In this paper, a Pressure Swing Absorption (PSAb) alternative operating batch wise is analyzed. An optimal ...
Exergoenvironmental analysis of hydrogen production through glycerol steam reforming
(2021-01-01)
The increase in biodiesel production is leading to a scenario in which more glycerol, which is a by-product of this biofuel production, is generated each day. Among the many potential applications for this substance, steam ...
Hydrogen peroxide bleaching of cellulose pulps obtained from brewer`s spent grain
(SPRINGER, 2008)
Brewer`s spent grain (BSG) was evaluated for bleached pulp production. Two cellulose pulps with different chemical compositions were produced by soda pulping: one from the original raw material and the other from material ...
Effect of aluminum on the properties of lanthana-supported nickel catalysts
(2008)
The effect of aluminum addition on the properties of lanthanum oxide was investigated in order to find new supports for catalytic purposes. Pure lanthanum oxide and aluminum-loaded lanthanum oxide were prepared by precipitation ...
A thorium-doped catalyst for the high temperature shift reaction
(2002)
The reforming of natural gas feedstock in the presence of steam is the main industrial route to produce high purity hydrogen. However, this process also produces carbon oxides which can poison most hydrogenation catalysts ...