Jump to main content
Jump to site search

Themed collection Hydrogen

36 items
Feature Article

Photo-hydrogen-evolving molecular devices driving visible-light-induced water reduction into molecular hydrogen: structure–activity relationship and reaction mechanism

This article describes the structure–activity relationship and reaction mechanism of photo-hydrogen-evolving molecular devices made up of Ru(II) sensitizers and Pt(II) molecular catalysts.

Graphical abstract: Photo-hydrogen-evolving molecular devices driving visible-light-induced water reduction into molecular hydrogen: structure–activity relationship and reaction mechanism
From the themed collection: Hydrogen
Feature Article

Activation of dihydrogen by non-metal systems

This article reviews advances in the metal-free activation of hydrogen and the utilization of these and related systems in catalytic hydrogenations.

Graphical abstract: Activation of dihydrogen by non-metal systems
From the themed collection: Hydrogen
Communication

Transition metal catalysed ammonia-boranedehydrogenation in ionic liquids

Significant advantages result from combining the disparate hydrogen release pathways for ammonia-borane (AB) dehydrogenation using ionic liquids (ILs) and transition metal catalysts. With the RuCl2(PMe3)4 catalyst precursor, AB dehydrogenation selectivity and extent are maximized in an IL with the moderately coordinating ethylsulfate anion.

Graphical abstract: Transition metal catalysed ammonia-borane dehydrogenation in ionic liquids
From the themed collection: Hydrogen
Communication

Transition metal catalysed dehydrogenation of amine-boranefuel blends

Mixtures containing ammonia-borane and sec-butylamine-borane remain liquid throughout the hydrogen release process that affords tri(N-sec-butyl)borazine and polyborazylene.

Graphical abstract: Transition metal catalysed dehydrogenation of amine-borane fuel blends
From the themed collection: Hydrogen
Communication

Porous nanotube network: a novel 3-D nanostructured material with enhanced hydrogen storage capacity

Porous nanotube networks are a novel family of ‘carbon superstructures’ with superior structural characteristics and many potential applications.

Graphical abstract: Porous nanotube network: a novel 3-D nanostructured material with enhanced hydrogen storage capacity
From the themed collection: Hydrogen
Communication

Heterobimetallic rhodium–gold halide and hydride complexes

Thermal and photochemical reactions relevant to photocatalytic hydrogen production have been investigated on rhodium–gold heterobimetallic constructs.

Graphical abstract: Heterobimetallic rhodium–gold halide and hydride complexes
From the themed collection: Hydrogen
Communication

Facile metal free regioselective transfer hydrogenation of polarized olefins with ammonia borane

Transfer hydrogenation of polarized olefins with ammonia borane was achieved at room temperature proceeding stepwise with a unique hydroboration intermediate.

Graphical abstract: Facile metal free regioselective transfer hydrogenation of polarized olefins with ammonia borane
From the themed collection: Hydrogen
Communication

Towards a structure-performance relationship for hydrogen storage in Ti-doped NaAlH4 nanoparticles

By adding a Ti catalyst to nanosized NaAlH4 (<20 nm) hydrogen desorption rates are enhanced. Adding the Ti catalyst before the alanate resulted in a superior material.

Graphical abstract: Towards a structure-performance relationship for hydrogen storage in Ti-doped NaAlH4 nanoparticles
From the themed collection: Hydrogen
Communication

Photocatalytic H2 evolution from neutral water with a molecular cobalt catalyst on a dye-sensitised TiO2 nanoparticle

A cobaloxime catalyst evolves H2 photocatalytically when attached on dye-sensitised TiO2.

Graphical abstract: Photocatalytic H2 evolution from neutral water with a molecular cobalt catalyst on a dye-sensitised TiO2 nanoparticle
From the themed collection: Hydrogen
Communication

A novel catalyst precursor K2TiF6 with remarkable synergetic effects of K, Ti and F together on reversible hydrogen storage of NaAlH4

A synergetic effect of K, Ti and F together on improving the reversible hydrogen storage properties of NaAlH4 is found by intruding K2TiF6 as catalyst precursor.

Graphical abstract: A novel catalyst precursor K2TiF6 with remarkable synergetic effects of K, Ti and F together on reversible hydrogen storage of NaAlH4
From the themed collection: Hydrogen
Communication

Hydrogen storage properties and neutron scattering studies of Mg2(dobdc)—a metal–organic framework with open Mg2+adsorption sites

The hydrogen storage properties of Mg2(dobdc) are probed by adsorption experiments, infrared spectroscopy, and neutron scattering techniques, demonstrating that the open coordination sites are of benefit for high-density storage."

Graphical abstract: Hydrogen storage properties and neutron scattering studies of Mg2(dobdc)—a metal–organic framework with open Mg2+ adsorption sites
From the themed collection: Hydrogen
Communication

Reversible dehydrogenation of magnesium borohydride to magnesium triborane in the solid state under moderate conditions

The solid state dehydrogenation of Mg(BH4)2 to Mg(B3H8)2 has been shown to be reversible under the conditions of moderate temperature and pressure that preclude the formation of polyboranes through condensation reactions.

Graphical abstract: Reversible dehydrogenation of magnesium borohydride to magnesium triborane in the solid state under moderate conditions
From the themed collection: Hydrogen
Communication

Structure and dynamics of ammonium borohydride

H atom disorder and rapid reorientation of NH4+ and BH4 ions in hydrogen storage material NH4BH4.

Graphical abstract: Structure and dynamics of ammonium borohydride
From the themed collection: Hydrogen
Communication

Dihydrogen activation by sulfido-bridged dinuclear Ru/Ge complexes: insight into the [NiFe] hydrogenase unready state

Molecular H2 was activated by S/SH bridged dinuclear Ru/Ge complexes, which model the activation process of the “unready” state of [NiFe] hydrogenase.

Graphical abstract: Dihydrogen activation by sulfido-bridged dinuclear Ru/Ge complexes: insight into the [NiFe] hydrogenase unready state
From the themed collection: Hydrogen
Communication

Diiron species containing a cyclic PPh2NPh2 diphosphine related to the [FeFe]H2ases active site

Preliminary investigations of proton and electron transfers on new dissymmetrically disubstituted diiron dithiolate species [Fe2(CO)42-PPh2NPh2)(μ-pdt)] have been done.

Graphical abstract: Diiron species containing a cyclic PPh2NPh2 diphosphine related to the [FeFe]H2ases active site
From the themed collection: Hydrogen
Communication

Double addition of H2 to transition metal–borane complexes: a ‘hydride shuttle’ process between boron and transition metal centres

The addition of H2 across a transition metal–borane bond is reported for the first time. Successive hydrogen addition to a rhodium–norbornadiene complex leads to the elimination of the organic species and a recharging of the boron–hydrogen bond providing active hydrogenation catalysts.

Graphical abstract: Double addition of H2 to transition metal–borane complexes: a ‘hydride shuttle’ process between boron and transition metal centres
From the themed collection: Hydrogen
Communication

The diammoniate of diborane: crystal structure and hydrogen release

The crystal structure of the diammoniate of diborane is presented for the first time since its discovery in 1923.

Graphical abstract: The diammoniate of diborane: crystal structure and hydrogen release
From the themed collection: Hydrogen
Communication

Hydrogen oxidation catalysis by a nickel diphosphine complex with pendant tert-butyl amines

A bis-diphosphine nickel complex with tert-butyl functionalized pendant amines functions as a highly active electrocatalyst for the oxidation of hydrogen in the presence of base.

Graphical abstract: Hydrogen oxidation catalysis by a nickel diphosphine complex with pendant tert-butyl amines
From the themed collection: Hydrogen
Communication

Intramolecular heterolytic dihydrogen cleavage by a bifunctional frustrated pyrazolylborane Lewis pair

A bifunctional pyrazolylborane is introduced that is capable of heterolytic dihydrogen activation at ambient temperature and pressure; the resulting zwitterionic dihydro congener represents a potential metal-free hydrogenation catalyst.

Graphical abstract: Intramolecular heterolytic dihydrogen cleavage by a bifunctional frustrated pyrazolylborane Lewis pair
From the themed collection: Hydrogen
Communication

Gas pressure effects on the rates of catalytic H2oxidation by hydrogenases

Investigations of an observation that the rate of H2 oxidation by a hydrogenase decreases as the dissolved gas concentration increases.

Graphical abstract: Gas pressure effects on the rates of catalytic H2 oxidation by hydrogenases
From the themed collection: Hydrogen
Communication

Altered thermodynamic and kinetic properties of MgH2 infiltrated in microporous scaffold

The enthalpy of formation of MgH2 is lowered by 11 kJ mol−1 if the hydride particles are smaller than 3 nm.

Graphical abstract: Altered thermodynamic and kinetic properties of MgH2 infiltrated in microporous scaffold
From the themed collection: Hydrogen
Communication

Multimode hydriding/dehydriding reactions of CaPd

Multimode hydriding/dehydriding reactions of CaPd proceed via hydrogen solution/dissolution and phase decomposition/recombination over wide temperature ranges.

Graphical abstract: Multimode hydriding/dehydriding reactions of CaPd
From the themed collection: Hydrogen
Communication

Photocatalytic hydrogen production from water in self-assembled supramolecular iridiumcobalt systems

Self-assembled supramolecular photocatalytic systems produced H2 in aqueous solutions upon visible light irradiation.

Graphical abstract: Photocatalytic hydrogen production from water in self-assembled supramolecular iridium–cobalt systems
From the themed collection: Hydrogen
Communication

Electric field induced activation of H2—Can DFT do the job?

The applicability of different density functional methods to the problem of dihydrogen dissociation in an electric field as a model for FLP activation and the bi-radical character of the reaction are investigated.

Graphical abstract: Electric field induced activation of H2—Can DFT do the job?
From the themed collection: Hydrogen
Communication

Chain mechanism for exchange of D2 with a ruthenium hydride

The ruthenium hydride of (Ar4CpOH)Ru(CO)2H exchanges cleanly and rapidly with D2 at room temperature to generate the ruthenium deuteride. A chain mechanism is proposed to explain the much more rapid exchange of RuH/D2 than RuCO exchange with 13CO.

Graphical abstract: Chain mechanism for exchange of D2 with a ruthenium hydride
From the themed collection: Hydrogen
Communication

Azulene based metal–organic frameworks for strong adsorption of H2

MOFs comprised of internally polarized 1,3-azulenedicarboxylate were synthesized. The guest free MOF exhibits strong MOF-H2 interactions (7.8–6.8 kJ mol−1) revealing the significant impact of internally polarized azulene backbone to stabilized H2 molecules in the framework.

Graphical abstract: Azulene based metal–organic frameworks for strong adsorption of H2
From the themed collection: Hydrogen
Communication

Hydrogen generation by electrolysis of liquid ammonia

Hydrogen gas is generated by the electrolysis of liquid ammonia which has high hydrogen capacity of 17.8 mass%.

Graphical abstract: Hydrogen generation by electrolysis of liquid ammonia
From the themed collection: Hydrogen
Communication

Robust photocatalytic waterreduction with cyclometalated Ir(III) 4-vinyl-2,2′-bipyridine complexes

Novel [Ir(C⁁N)2(N⁁N)]+ complexes with N⁁N ligands containing vinyl groups were synthesized resulting in quintupled turn-over numbers for the photocatalytic hydrogen production compared to analogous non-vinyl compounds.

Graphical abstract: Robust photocatalytic water reduction with cyclometalated Ir(iii) 4-vinyl-2,2′-bipyridine complexes
From the themed collection: Hydrogen
Communication

Thermodynamic and kinetic destabilization in LiBH4/Mg2NiH4: promise for borohydride-based hydrogenstorage

The LiBH4/Mg2NiH4 hydride system reversibly cycles hydrogen via a new reaction path with exceptionally low enthalpy and entropy.

Graphical abstract: Thermodynamic and kinetic destabilization in LiBH4/Mg2NiH4: promise for borohydride-based hydrogen storage
From the themed collection: Hydrogen
Communication

Bimetallic nickel-iridium nanocatalysts for hydrogen generation by decomposition of hydrous hydrazine

Bimetallic NiIr alloy nanocatalysts exhibit 100% H2 selectivity for complete decomposition of hydrous hydrazine at room temperature.

Graphical abstract: Bimetallic nickel-iridium nanocatalysts for hydrogen generation by decomposition of hydrous hydrazine
From the themed collection: Hydrogen
Communication

Parahydrogen-induced polarization in alkyne hydrogenation catalyzed by Pdnanoparticles embedded in a supported ionic liquid phase

Parahydrogen-induced polarization was observed in the gas phase heterogeneous hydrogenation of propyne catalyzed by Pd0 nanoparticles embedded in an ionic liquid phase supported on activated carbon fibers (Pd0/SILP/ACF). The essential role of the ionic liquid is demonstrated.

Graphical abstract: Parahydrogen-induced polarization in alkyne hydrogenation catalyzed by Pd nanoparticles embedded in a supported ionic liquid phase
From the themed collection: Hydrogen
Communication

Metal-free reductions of N-heterocycles via Lewis acid catalyzed hydrogenation

N-Heterocycles are reduced in the presence of a catalytic amount of the borane B(C6F5)3 and H2.

Graphical abstract: Metal-free reductions of N-heterocycles via Lewis acid catalyzed hydrogenation
From the themed collection: Hydrogen
Communication

DFT characterization of the reaction pathways for terminal- to μ-hydrideisomerisation in synthetic models of the [FeFe]-hydrogenase active site

The mechanism of terminal- to μ-hydride isomerisation in models of synthetic complexes resembling the [FeFe]-hydrogenase active site has been elucidated by DFT calculations.

Graphical abstract: DFT characterization of the reaction pathways for terminal- to μ-hydride isomerisation in synthetic models of the [FeFe]-hydrogenase active site
From the themed collection: Hydrogen
Communication

Artificial hydrogenases: assembly of an H-cluster analogue within a functionalised poly(pyrrole) matrix

Building an H-cluster analogue within a poly(pyrrole) modified electrode.

Graphical abstract: Artificial hydrogenases: assembly of an H-cluster analogue within a functionalised poly(pyrrole) matrix
From the themed collection: Hydrogen
Communication

Reversibility of the hydrogen desorption from LiBH4: a synergetic effect of nanoconfinement and Ni addition

Reversible hydrogen uptake in LiBH4 is greatly enhanced by a combined effect of nanoconfinement in mesoporous carbon and Ni addition.

Graphical abstract: Reversibility of the hydrogen desorption from LiBH4: a synergetic effect of nanoconfinement and Ni addition
From the themed collection: Hydrogen
Communication

The hydrogenation of molecules with polar bonds catalyzed by a ruthenium(II) complex bearing a chelating N-heterocyclic carbene with a primary amine donor

A ruthenium(II) complex bearing a chelating N-heterocyclic carbene with an NH2 group (C–NH2) is a catalyst for the H2-hydrogenation of polar bonds in basic solution.

Graphical abstract: The hydrogenation of molecules with polar bonds catalyzed by a ruthenium(ii) complex bearing a chelating N-heterocyclic carbene with a primary amine donor
From the themed collection: Hydrogen
36 items

About this collection

This web-based themed issue showcases high quality articles covering all aspects of hydrogen generation, storage and activation. The invited, peer-reviewed articles highlight cutting-edge contributions by international leaders and celebrate current achievements and future perspectives in this exciting field of research.

The guest editors of this issue are Ferdi Schüth, Daniel DuBois, Mary DuBois and Douglas Stephan.

Articles in this web themed issue will be added to the list below as soon as possible, after they are published. Please return to this page frequently to see this collection grow.

Spotlight

Advertisements