Special Issue "Heterogeneous Catalysis & Hydrogen Storage"

A special issue of Catalysts (ISSN 2073-4344).

Deadline for manuscript submissions: 31 January 2018

Special Issue Editors

Guest Editor
Dr. Di-Jia Liu

Chemical Sciences & Engineering Division, Argonne National Laboratory, Argonne, IL 60439, USA
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Interests: fuel cells; hydrogen storage; Li-air battery; hydrogen production
Guest Editor
Prof. Dr. Jianguo Liu

College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210093, China
Website | E-Mail
Interests: fuel cells; lithium battery; electrochemical energy storage and conversion

Special Issue Information

Dear Colleagues,

The worldwide challenges in energy supplies and climate change demand the reduction of fossil fuel consumption. New energy storage or conversion technologies that can improve energy efficiency will play a key role in the near future. This Special Issue will focus on recent advances in catalysis or electrocatalysis during chemical or electrochemical processes for energy storage or conversion. Topics on hydrogen storage and production from fossil fuel and renewable sources are also included. Full papers, communications, perspectives, and mini-reviews are all welcome.

Dr. Di-Jia Liu
Prof. Dr. Jianguo Liu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Catalysts is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Electrocatalysts in fuel cells

  • Electrocatalysts in electrolysis

  • Catalyst for fuel reforming

  • Hydrogen storage

  • Electrocatalysts in Li-O2 battery

  • Key materials in electrochemical storage and conversion

Published Papers (6 papers)

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Research

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Open AccessArticle Morpholine-Modified Pd/γ-Al2O3@ASMA Pellet Catalyst with Excellent Catalytic Selectivity in the Hydrogenation of p-Chloronitrobenzene to p-Chloroaniline
Catalysts 2017, 7(10), 292; doi:10.3390/catal7100292
Received: 6 September 2017 / Revised: 20 September 2017 / Accepted: 30 September 2017 / Published: 30 September 2017
PDF Full-text (3931 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
An amino poly (styrene-co-maleic anhydride) polymer (ASMA) encapsulated γ-Al2O3 pellet material has been synthesized successfully. After loading with Pd species and modified with morpholine, the inorganic-organic hybrid material shows an excellent catalytic property in the selective hydrogenation
[...] Read more.
An amino poly (styrene-co-maleic anhydride) polymer (ASMA) encapsulated γ-Al2O3 pellet material has been synthesized successfully. After loading with Pd species and modified with morpholine, the inorganic-organic hybrid material shows an excellent catalytic property in the selective hydrogenation of p-chloronitrobenzene (p-CNB) to p-chloroaniline (p-CAN). In this procedure, morpholine can connect with the polymer layer in a form of amide bond and acts as an unparalleled immobilized dechlorination inhibitor, which can avoid further dechlorination efficiently and keeps stability due to the repulsive effect from the surviving C-O-C bond. The catalyst as prepared was characterized by using XRD, TGA, SEM, TEM, FT-IR, and ICP-OES, and it was further tested in the selective hydrogenation of p-CNB. It shows a supreme catalytic activity (almost 100%) and selectivity (up to 99.51%) after recycling for even 10 times, much superior to the blank alumina supported palladium (47.09%). Full article
(This article belongs to the Special Issue Heterogeneous Catalysis & Hydrogen Storage)
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Open AccessArticle Hydrogen Evolution Reaction of γ-Mo0.5W0.5 C Achieved by High Pressure High Temperature Synthesis
Catalysts 2016, 6(12), 208; doi:10.3390/catal6120208
Received: 30 October 2016 / Revised: 2 December 2016 / Accepted: 5 December 2016 / Published: 17 December 2016
PDF Full-text (4759 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
For the first time, the hydrogen evolution reaction (HER) electrocatalytic performances of incompressible γ-Mo0.5W0.5C, prepared by high-pressure, high-temperature (HPHT) synthesis, were investigated in the electrolyte. The polarization curve of the γ-Mo0.5W0.5C cathode exhibits the current
[...] Read more.
For the first time, the hydrogen evolution reaction (HER) electrocatalytic performances of incompressible γ-Mo0.5W0.5C, prepared by high-pressure, high-temperature (HPHT) synthesis, were investigated in the electrolyte. The polarization curve of the γ-Mo0.5W0.5C cathode exhibits the current density of 50 mA∙cm−2 at an overpotential value of 320 mV. The corresponding Tafel slope of the incompressible γ-Mo0.5W0.5C is 74 mV∙dec−1. After a 1000-cycle test, and then exposure to the air for six months, the γ-Mo0.5W0.5C electrode performed a current density of 50 mA∙cm−2 at an overpotential of 354 mV, which was close to the initial one. Full article
(This article belongs to the Special Issue Heterogeneous Catalysis & Hydrogen Storage)
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Open AccessArticle Binary Oxides with Defined Hierarchy of Pores in the Esterification of Glycerol
Catalysts 2016, 6(10), 151; doi:10.3390/catal6100151
Received: 4 August 2016 / Revised: 20 September 2016 / Accepted: 21 September 2016 / Published: 27 September 2016
Cited by 1 | PDF Full-text (7606 KB) | HTML Full-text | XML Full-text
Abstract
Various porous binary oxides with elevated textural properties were obtained in this work. The as-synthesized solids were calcined or modified by reflux and extraction processes. Characterizations through SEM, nitrogen physisorption and TEM techniques demonstrated the formation of porous metal oxide networks over all
[...] Read more.
Various porous binary oxides with elevated textural properties were obtained in this work. The as-synthesized solids were calcined or modified by reflux and extraction processes. Characterizations through SEM, nitrogen physisorption and TEM techniques demonstrated the formation of porous metal oxide networks over all solids. XRD, thermal analyses and FTIR measurements showed the existence of nanosized rutile TiO2, tetragonal ZrO2, SiO2 and γ-Al2O3 phases on the solids. The structure and texture of the as-synthesized SiAl sol-gel derived solid resulted in the formation of well-dispersed nanoparticles on the support. The removal of the organic compounds by ethanol extraction or reflux from SiAl resulted in the presence of structures with defined hierarchy of pores. Among the solids studied, the catalytic results in the esterification of glycerol with acetic acid indicated that best performances were obtained over SiAl sample when submitted to extraction and reflux treatments. This was due to the creation of accessible pores, which facilitated the reaction occurrence at glycerol to acetic acid molar ratio = 1:3 and T = 80 °C for 20 h using 75 mg of catalyst. The solids can be reused three times without complete loss of their catalytic performance. Full article
(This article belongs to the Special Issue Heterogeneous Catalysis & Hydrogen Storage)
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Open AccessArticle WS2 as an Effective Noble-Metal Free Cocatalyst Modified TiSi2 for Enhanced Photocatalytic Hydrogen Evolution under Visible Light Irradiation
Catalysts 2016, 6(9), 136; doi:10.3390/catal6090136
Received: 23 July 2016 / Revised: 26 August 2016 / Accepted: 5 September 2016 / Published: 10 September 2016
Cited by 5 | PDF Full-text (4349 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
A noble-metal free photocatalyst consisting of WS2 and TiSi2 being used for hydrogen evolution under visible light irradiation, has been successfully prepared by in-situ formation of WS2 on the surface of TiSi2 in a thermal reaction. The obtained samples
[...] Read more.
A noble-metal free photocatalyst consisting of WS2 and TiSi2 being used for hydrogen evolution under visible light irradiation, has been successfully prepared by in-situ formation of WS2 on the surface of TiSi2 in a thermal reaction. The obtained samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDX), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The results demonstrate that WS2 moiety has been successfully deposited on the surface of TiSi2 and some kind of chemical bonds, such as Ti-S-W and Si-S-W, might have formed on the interface of the TiSi2 and WS2 components. Optical and photoelectrochemical investigations reveal that WS2/TiSi2 composite possesses lower hydrogen evolution potential and enhanced photogenerated charge separation and transfer efficiency. Under 6 h of visible light (λ > 420 nm) irradiation, the total amount of hydrogen evolved from the optimal WS2/TiSi2 catalyst is 596.4 μmol·g−1, which is around 1.5 times higher than that of pure TiSi2 under the same reaction conditions. This study shows a paradigm of developing the effective, scalable and inexpensive system for photocatalytic hydrogen generation. Full article
(This article belongs to the Special Issue Heterogeneous Catalysis & Hydrogen Storage)
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Open AccessArticle Sulfide Catalysts Supported on Porous Aromatic Frameworks for Naphthalene Hydroprocessing
Catalysts 2016, 6(8), 122; doi:10.3390/catal6080122
Received: 30 June 2016 / Revised: 30 July 2016 / Accepted: 5 August 2016 / Published: 16 August 2016
Cited by 6 | PDF Full-text (4670 KB) | HTML Full-text | XML Full-text
Abstract
This paper describes the first example of using porous aromatic frameworks as supports for sulfide catalysts for the hydrogenation of aromatic hydrocarbons. The synthesis of bimetallic Ni-W and Ni-Mo sulfides was performed by in situ decomposition of [(n-Bu)4N]2[Ni(MeS4
[...] Read more.
This paper describes the first example of using porous aromatic frameworks as supports for sulfide catalysts for the hydrogenation of aromatic hydrocarbons. The synthesis of bimetallic Ni-W and Ni-Mo sulfides was performed by in situ decomposition of [(n-Bu)4N]2[Ni(MeS4)2] (Me = W, Mo) complexes, supported on mesoporous aromatic framework with a diamond-like structure. It is shown that the highest naphthalene conversions were achieved in the case of additional sulfidation with sulfur. After the reaction, catalysts were characterized by X-ray photoelectron spectroscopy and high-resolution transmission electron microscopy. The activity of synthesized catalysts has been studied using naphthalene as a model substrate. The materials used in this study were substantially active in hydrogenation and slightly in hydrocracking of naphthalene. Full article
(This article belongs to the Special Issue Heterogeneous Catalysis & Hydrogen Storage)
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Review

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Open AccessReview Controllable and Large-Scale Synthesis of Carbon Nanostructures: A Review on Bamboo-Like Nanotubes
Catalysts 2017, 7(9), 256; doi:10.3390/catal7090256
Received: 27 July 2017 / Revised: 17 August 2017 / Accepted: 18 August 2017 / Published: 30 August 2017
Cited by 1 | PDF Full-text (7879 KB) | HTML Full-text | XML Full-text
Abstract
Bamboo-like carbon nanotubes are members of the carbon nanotubes (CNTs) family, whose structure is made up of separated hollow compartments and bamboo knots. Due to the peculiar structure of the CNTs species, the growth mechanism and related features have been widely investigated. Bamboo-like
[...] Read more.
Bamboo-like carbon nanotubes are members of the carbon nanotubes (CNTs) family, whose structure is made up of separated hollow compartments and bamboo knots. Due to the peculiar structure of the CNTs species, the growth mechanism and related features have been widely investigated. Bamboo-like carbon nanotubes are widely applied in several fields, such as sensors, adsorbents, catalysts, and lithium-ion battery electrodes materials. Different methods have been applied for the synthesis of carbon nanotubes, among them, catalytic chemical vapor deposition has been singled out as the most used procedure due to low cost with a high quality product. The present review is devoted to increasing the literature dealing with the design, synthesis, and characterization of bamboo-like carbon nanotubes grown over different catalysts. Results on the methane dry reforming reaction, hydrocarbon thermal decomposition, special chemical vapor deposition as well as other methods applied to the preparation of bamboo-like carbon nanotubes are discussed. The differences in the carbon deposits between the dry reforming reaction and other reaction methods are compared and possible formation mechanisms of bamboo-like carbon nanotubes are discussed. Full article
(This article belongs to the Special Issue Heterogeneous Catalysis & Hydrogen Storage)
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