Cationic poly-L-amino acid-enhanced selective hydrogen production based on formate decomposition with platinum nanoparticles dispersed by polyvinylpyrrolidone

2021 ◽  
Author(s):  
Yusuke Minami ◽  
Yutaka Amao
Keyword(s):  
Aqueous Solution ◽  
Amino Acid ◽  
Hydrogen Production ◽  
Formic Acid ◽  
Platinum Nanoparticles ◽  
Hydrogen Carrier ◽  
Low Toxicity ◽  
Formate Decomposition

Formate is attracting attention as a hydrogen carrier because of its low toxicity and easy handling in aqueous solution. In order to utilize formic acid as a hydrogen carrier, a...

Catalytic mechanism for selective hydrogen production based on formate decomposition with polyvinylpyrrolidone-dispersed platinum nanoparticles

2020 ◽  
Vol 4 (7) ◽  
pp. 3458-3466
Author(s):  
Yusuke Minami ◽  
Yutaka Amao
Keyword(s):  
Hydrogen Production ◽  
Ir Spectra ◽  
Production Rate ◽  
Concentration Dependence ◽  
Platinum Nanoparticles ◽  
Catalytic Mechanism ◽  
Formate Decomposition

To clarify the HCOOH decomposition into H2 and CO2 mechanism with Pt-PVP, a pH or HCOO− concentration dependence of H2 production rate with Pt-PVP, IR spectra was studied and the possible catalytic mechanism of H2 production was proposed.

Enhancement of catalytic activity for selective hydrogen production from formate with homogeneously poly(vinylpyrrolidone)/cationic poly(l-lysine) dispersed platinum nanoparticles

2020 ◽  
Vol 44 (34) ◽  
pp. 14334-14338
Author(s):  
Y. Minami ◽  
Y. Muroga ◽  
Y. Amao
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Production ◽  
Platinum Nanoparticles ◽  
Pt Nanoparticles ◽  
Formate Decomposition

By using Pt nanoparticles dispersed by polyvinylpyrrolidone and cationic biopolymer, poly(l-lysine) (Pt–PVP/PLL), the highly selective H2 production based on formate decomposition was accomplished compared with that of Pt–PVP.

CO2as a hydrogen vector – transition metal diamine catalysts for selective HCOOH dehydrogenation

2017 ◽  
Vol 46 (5) ◽  
pp. 1670-1676 ◽  
Author(s):  
Cornel Fink ◽  
Gábor Laurenczy
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Production ◽  
Transition Metal ◽  
Formic Acid ◽  
Catalytic Dehydrogenation ◽  
Mild Conditions ◽  
Adjustable Rate

The homogeneous catalytic dehydrogenation of formic acid in aqueous solution provides an efficientin situmethod for hydrogen production, under mild conditions, and at an adjustable rate.

AgPd@Pd/TiO2 nanocatalyst synthesis by microwave heating in aqueous solution for efficient hydrogen production from formic acid

2015 ◽  
Vol 3 (20) ◽  
pp. 10666-10670 ◽  
Author(s):  
Masashi Hattori ◽  
Daisuke Shimamoto ◽  
Hiroki Ago ◽  
Masaharu Tsuji
Keyword(s):  
Aqueous Solution ◽  
Catalytic Activity ◽  
Hydrogen Production ◽  
Formic Acid ◽  
Microwave Heating ◽  
High Catalytic Activity

AgPd@Pd nanocatalysts loaded on TiO2 were fabricated in aqueous solution using MW heating to suppress alloying for high catalytic activity.

scholarly journals Boosting Hydrogen Production from Formic Acid over Pd Catalysts by Deposition of N-Containing Precursors on the Carbon Support

Energies ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3885 ◽  
Author(s):  
Golub ◽  
Beloshapkin ◽  
Gusel’nikov ◽  
Bolotov ◽  
Parmon ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Formic Acid ◽  
Carbon Support ◽  
Pd Nanoparticles ◽  
High Dispersion ◽  
Pd Catalysts ◽  
Strong Electron ◽  
High Hydrogen ◽  
Hydrogen Carrier ◽  
Pyridinic Nitrogen

Formic acid is a promising liquid organic hydrogen carrier (LOHC) since it has relatively high hydrogen content (4.4 wt%), low inflammability, low toxicity and can be obtained from biomass or from CO2. The aim of the present research was the creation of efficient 1 wt% Pd catalysts supported on mesoporous graphitic carbon (Sibunit) for the hydrogen production from gas-phase formic acid. For this purpose, the carbon support was modified by pyrolysis of deposited precursors containing pyridinic nitrogen such as melamine (Mel), 2,2′-bipyridine (Bpy) or 1,10-phenanthroline (Phen) at 673 K. The following activity trend of the catalysts Pd/Mel/C > Pd/C ~ Pd/Bpy/C > Pd/Phen/C was obtained. The activity of the Pd/Mel/C catalyst was by a factor of 4 higher than the activity of the Pd/C catalyst at about 373 K and the apparent activation energy was significantly lower than those for the other catalysts (32 vs. 42–46 kJ/mol). The high activity of the melamine-based samples was explained by a high dispersion of Pd nanoparticles (~2 nm, HRTEM) and their strong electron-deficient character (XPS) provided by interaction of Pd with pyridinic nitrogen species of the support. The presented results can be used for the development of supported Pd catalysts for hydrogen production from different liquid organic hydrogen carriers.

scholarly journals Progress in Catalytic Hydrogen Production from Formic Acid over Supported Metal Complexes

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1334
Author(s):  
Dmitri A. Bulushev
Keyword(s):  
Hydrogen Production ◽  
Formic Acid ◽  
Metal Complexes ◽  
High Performance ◽  
Supported Catalysts ◽  
Industrial Applications ◽  
Acid Activation ◽  
Hydrogen Carrier ◽  
Supported Metal Complexes ◽  
Supported Metal

Formic acid is a liquid organic hydrogen carrier giving hydrogen on demand using catalysts. Metal complexes are known to be used as efficient catalysts for the hydrogen production from formic acid decomposition. Their performance could be better than those of supported catalysts with metal nanoparticles. However, difficulties to separate metal complexes from the reaction mixture limit their industrial applications. This problem can be resolved by supporting metal complexes on the surface of different supports, which may additionally provide some surface sites for the formic acid activation. The review analyzes the literature on the application of supported metal complexes in the hydrogen production from formic acid. It shows that the catalytic activity of some stable Ru and Ir supported metal complexes may exceed the activity of homogeneous metal complexes used for deposition. Non-noble metal-based complexes containing Fe demonstrated sufficiently high performance in the reaction; however, they can be poisoned by water present in formic acid. The proposed review could be useful for development of novel catalysts for the hydrogen production.

scholarly journals Strategic examination of the classical catalysis of formic acid decomposition for intermittent hydrogen production, storage and supply: A review

2021 ◽  
Vol 45 ◽  
pp. 101078
Author(s):  
Samuel Eshorame Sanni ◽  
Peter Adeniyi Alaba ◽  
Emeka Okoro ◽  
Moses Emetere ◽  
Babalola Oni ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Formic Acid ◽  
Acid Decomposition ◽  
Formic Acid Decomposition

scholarly journals A Process for Hydrogen Production from the Catalytic Decomposition of Formic Acid over Iridium—Palladium Nanoparticles

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3258
Author(s):  
Hamed M. Alshammari ◽  
Mohammad Hayal Alotaibi ◽  
Obaid F. Aldosari ◽  
Abdulellah S. Alsolami ◽  
Nuha A. Alotaibi ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Formic Acid ◽  
Activated Charcoal ◽  
Palladium Nanoparticles ◽  
Room Temperature ◽  
Catalytic Decomposition ◽  
Conversion Yield ◽  
Production Of Hydrogen ◽  
Commercial Applications

The present study investigates a process for the selective production of hydrogen from the catalytic decomposition of formic acid in the presence of iridium and iridium–palladium nanoparticles under various conditions. It was found that a loading of 1 wt.% of 2% palladium in the presence of 1% iridium over activated charcoal led to a 43% conversion of formic acid to hydrogen at room temperature after 4 h. Increasing the temperature to 60 °C led to further decomposition and an improvement in conversion yield to 63%. Dilution of formic acid from 0.5 to 0.2 M improved the decomposition, reaching conversion to 81%. The reported process could potentially be used in commercial applications.

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