Submit to Special Issue Submit Abstract to Special Issue Review for Catalysts Edit a Special Issue

Journal Menu

Journal Browser

► Journal Browser

Special Issue "Heterogeneous Catalysis for Environmentally Compatible Reactions and Processes"

Special Issue Editors
Special Issue Information
Keywords
Published Papers

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Environmental Catalysis".

Deadline for manuscript submissions: 15 November 2023 | Viewed by 2707

Share This Special Issue

Special Issue Editors

Dr. Ileana Daniela Lick

E-Mail Website
Guest Editor

CINDECA (CCT La Plata-CONICET-UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Calle 47 N° 257, La Plata, Buenos Aires 1900, Argentina
Interests: heterogeneous catalysis; environmental catalysis; oxides; characterization of catalysts; catalytic combustion; biomass valorization; catalytic pyrolysis

Dr. Paula Osorio-Vargas

E-Mail Website
Guest Editor

CINDECA (CCT La Plata-CONICET-UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Calle 47 N° 257, La Plata, Buenos Aires 1900, Argentina
Interests: heterogeneous catalysis; environmental catalysis; characterization of catalysts; monometallic and bimetallic catalysts; steam reforming; H₂ production; waste valorization; catalytic pyrolysis

Special Issue Information

Dear Colleagues,

In recent decades, scientific–technological efforts have been intensified to reduce the effect of pollutants on health, the environment, and consequent climate change. Heterogeneous catalysis has been successfully applied in various chemistry and chemical engineering fields such as traditional industrial processes, petrochemicals, environmental protection, obtaining fuels, and chemical products. Currently, the solution to several problems is addressed towards reactions and environmentally friendly processes. Various lines of research have been devoted to eliminating and controlling emissions and environmental remediation. On the other hand, and no less important, the study of reactions and processes allowing waste recovery and clean fuel obtention has been intensified. The growing demand for energy and using renewable sources as alternatives to fossil fuels has increased the interest in new fields and lines of research. To respond to the challenge, developing new active and selective catalysts and environmentally friendly catalytic processes for existing and new applications is essential.

This Special Issue of Catalysts aims to cover new research and trends in the development and application of catalytic materials for sustainable catalytic applications, including pollution control, clean energy production, fine chemical, biomass valorization, and environmental remediation. The Editors welcome contributions in the form of research papers, short communications, and reviews focusing on the design and development of catalysts for sustainable catalytic processes. Topics include but are not limited to the following:

Environmental catalysis;
Wastewater treatment;
Catalysis in green synthesis;
Catalysts for emission control and air pollution control;
Biomass conversion and biofuel production;
Waste conversion;
Biomass derivates sub-products valorization;
Catalytic Pyrolysis;
H₂ production, CO₂ conversion, gasification, Fischer–Tropsch synthesis;
New materials for catalytic applications;
In situ/operando characterization techniques for studying the catalyst;
Computational catalysis.

Dr. Ileana Daniela Lick
Dr. Paula Osorio-Vargas
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 submissions that pass pre-check are 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 2200 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

heterogeneous catalysis
environmental catalysis
waste valorization
biofuel
energy

Published Papers (3 papers)

Download All Papers

Order results

Result details

Show export options Show export options

Select all

Export citation of selected articles as:

Research

Open AccessArticle

Secondary Amines from Catalytic Amination of Bio-Derived Phenolics over Pd/C and Rh/C: Effect of Operation Parameters

and

Luis E. Arteaga-Pérez

Catalysts 2023, 13(4), 654; https://doi.org/10.3390/catal13040654 - 27 Mar 2023

Viewed by 717

Abstract

The production of renewable chemicals using lignocellulosic biomass has gained significant attention in green chemistry. Among biomass-derived chemicals, secondary amines have emerged as promising intermediates for synthetic applications. Here, we report a systematic study on the reductive amination of phenolics with cyclohexylamine using Pd/C and Rh/C as catalysts. The catalytic tests were performed in batch reactors under different reaction conditions (various: amine concentration (0.1–0.4 mol/L), hydrogen pressure (0–2.5 bar), temperature (80–160 °C), and substituted phenols (phenol, o-cresol, p-cresol, and methoxyphenol)) and using tert-amyl alcohol as a solvent. The experimental observations were consistent with a multi-step mechanism, where hydrogenation of phenol to cyclohexanone is followed by condensation of the ketone with cyclohexylamine to form an imine, which is finally hydrogenated to produce secondary amines. In addition, there was evidence of parallel self-condensation of the cyclohexylamine. The study also supported a limited dehydrogenation capacity of Rh/C, unlike Pd/C, which increases this capacity at higher temperatures generating a higher yield of cyclohexylaniline (up to 15%). The study of the alkylated phenols demonstrated that the nature and propensity of hydrogenation of the phenolic controls their amination. Kinetic analysis revealed reaction orders between 0.4 and 0.7 for H₂, indicating its dissociative adsorption. Meanwhile, phenol’s order (between 1–1.8) suggests a single participation of this compound in the hydrogenation step. The order of 0.4 for cyclohexylamine suggests its participation as a surface-abundant species. The apparent activation energies derived from a power law approximation were of 37 kJ/mol and 10 kJ/mol on Pd/C and Rh/C, respectively. Full article

(This article belongs to the Special Issue Heterogeneous Catalysis for Environmentally Compatible Reactions and Processes)

► Show Figures

Figure 1

Open AccessArticle

The Quick Removal of Toxic Dye Molecules by an Efficient Adsorptive BiOI/Bi₂MoO₆ Heterostructure

Tasie Ebenezer Onyedika

and

Catalysts 2023, 13(3), 457; https://doi.org/10.3390/catal13030457 - 21 Feb 2023

Cited by 1 | Viewed by 591

Abstract

Adsorption is a low-energy, economical, and efficient method for pollutant removal from water. Because of their unique structure, large specific surface area (SSA), and non-toxicity, bismuth-based semiconductors, usually researched for the photodegradation of organic molecules, are also excellent for dark adsorption processes. Here, a three-dimensional adsorbent with a heterostructure with a hydrangea-like shape made of Bi₂MoO₆ (BMO) and BiOI (BOI) was synthesized by a one-pot solvothermal process and investigated for the adsorption of toxic dyes. BOI/BMO with an I-to-Mo ratio of 2.0 adsorbed 98.9% of the model pollutant rhodamine B (RhB) within 5 min with a maximum adsorption capacity of 72.72 mg/g in the dark at room temperature. When compared to pure BMO, the BOI₂/BMO heterostructure was 14.1 times more performant because of its flower-like morphology with multiple planes, an SSA that was 1.6-fold larger, increased porosity, the formation of heterojunctions, and a negative surface charge attracting RhB. Further investigation indicated that adsorption by BOI₂/BMO fitted the pseudo-second-order kinetic and the Langmuir isotherm models. In addition, the thermodynamic analysis showed that it was a spontaneous exothermic process probably relying on physisorption. Thus, the BOI/BMO adsorbent developed here is promising for the fast removal of toxic dyes from industrial wastewater. Full article

(This article belongs to the Special Issue Heterogeneous Catalysis for Environmentally Compatible Reactions and Processes)

► Show Figures

Graphical abstract

Open AccessFeature PaperArticle

Nickel and Cobalt Ilmenites-Based Catalysts for Upgrading Pyrolytic Oil during Pyrolysis of Waste Tires

Daniela Correa-Muriel

Hoover Valencia-Sánchez

Héctor Cortes-Hernández

Daniela González-Vera

Javiera Herrera

Cristian H. Campos

Mónica L. Casella

Luis E. Arteaga-Perez

and

Paula Osorio-Vargas

Catalysts 2022, 12(11), 1437; https://doi.org/10.3390/catal12111437 - 15 Nov 2022

Viewed by 1018

Abstract

Pyrolysis as a waste treatment method has gained relevance because it can generate higher value-added products in addition to reducing the environment’s secondary pollution. In this study, the catalytic pyrolysis of waste tires was evaluated using NiTiO₃ and CoTiO₃ ilmenites as catalysts and precursors of metal catalysts with the aim to produce an oil enriched in high-value hydrocarbons, such as benzene, toluene, a xylenes mixture, and products less-reported, such as p-cymene and p-cymenene. The experiments were performed in an analytical pyrolyzer coupled to GC/MS. The effect of the nature of the catalysts on the product distribution was compared with the uncatalyzed reaction. The main products of uncatalyzed pyrolysis were D, L-limonene (~60%), and isoprene (~25%) due to the depolymerization of natural rubber. Meanwhile, Ni-ilmenites-based catalysts favored the formation of target compounds to expense D, L-limonene. Moreover, the presence of metal in reduced-ilmenite sharply enhanced the selectivity by ~50% concerning oxidized ilmenite and above 80% compared to the uncatalyzed reaction for p-cymene and p-cymenene. By contrast, the Co-ilmenites-based catalysts showed a marginal effect on secondary reactions. Finally, the feasibility of forming the aromatic terpenes, p-cymene, and p-cymenene from limonene in the non-catalytic pyrolysis was evaluated. Full article

(This article belongs to the Special Issue Heterogeneous Catalysis for Environmentally Compatible Reactions and Processes)

► Show Figures

Journal Menu

Journal Browser

Special Issue "Heterogeneous Catalysis for Environmentally Compatible Reactions and Processes"

Share This Special Issue

Special Issue Editors

Special Issue Information

Keywords

Published Papers (3 papers)

Research

Further Information

Guidelines

MDPI Initiatives

Follow MDPI