Green Chemistry of Renewable Energy in Catalysis and Reaction Engineering

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Chemical Processes and Systems".

Deadline for manuscript submissions: closed (30 November 2024) | Viewed by 1447

Special Issue Editors


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Guest Editor
Faculty of Chemistry and Chemical Technology, University of Ljubljana (Univerza v Ljubljani), 1000 Ljubljana, Slovenia
Interests: organic carbonate; CO2 conversion; catalyst synthesis and characterization

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Guest Editor
School of Energy and Environment, Thapar Institute of Engineering and Technology, Patiala 147003, Punjab, India
Interests: homogenous and heterogenous catalyst; advanced oxidation processes; chemical kinetics

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Guest Editor
Faculty of Chemistry and Chemical Technology, University of Ljubljana (Univerza v Ljubljani), 1000 Ljubljana, Slovenia
Interests: photocatalysis; hydrotalcites catalyst; biomass; sol-gel synthesis; thermal analysis

Special Issue Information

Dear Colleagues,

The increased industrialization and urbanization have significantly surged the emission of greenhouse gases in the environment. However, for the progress of society, the production of various industrially relevant chemicals cannot be stopped. Therefore, there is a need for alternatives, viz., the conversion of biomass and coal into syngas, methane, methanol, etc., and their further conversion to chemicals and fuels. All these reactions require very harsh conditions in terms of temperature and pressure. The use of green chemistry is an essential tool for achieving this goal. It involves the development of chemical products and processes that reduce or eliminate the use and generation of hazardous substances. In addition to the benefits to human health, the environment, and economic sustainability, green chemistry emphasizes the development of safer chemicals and the elimination of by-products during the development of green products through cleaner production.

With the development and application of an appropriate catalyst, mild reaction conditions can be achieved. Effective catalysts can conveniently control the direction and rate of a reaction under suitable reaction temperature and pressure. In this regard, the heterogenous and electro-catalysis processes have been found efficient in chemical and fuel synthesis, biomass conversion, wastewater treatment, energy generation, etc. However, there are numerous challenges, such as catalysts deactivation, stability, search for low-cost catalysts, etc., in catalyst design with the required set of properties. Moreover, multiple engineering challenges, such as non-ideal mechanistic kinetics and thermodynamics, need to be studied for an effective outcome.

This Special Issue aims to cover catalyst design and engineering challenges for various catalysts developed for chemical and fuel synthesis, biomass conversion, wastewater treatment, energy generation, etc.

Dr. Praveen Kumar
Dr. Shilpi Verma
Prof. Dr. Romana Cerc Korošec
Guest Editors

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Keywords

  • heterogeneous catalysts
  • catalyst design
  • catalyst materials
  • environmental catalysis
  • catalysis for green synthesis and fine chemicals
  • biomass conversion
  • kinetics, scale-up
  • chemical engineering

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Published Papers (1 paper)

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Research

15 pages, 4716 KiB  
Article
Performance of CaO-Promoted Ni Catalysts over Nanostructured CeO2 in Dry Reforming of Methane
by Vicente Pérez-Madrigal, Didier Santiago-Salazar, Mayahuel Ortega-Avilés, Edna Ríos-Valdovinos, Elim Albiter, Miguel A. Valenzuela and Francisco Pola-Albores
Processes 2024, 12(12), 2815; https://doi.org/10.3390/pr12122815 - 9 Dec 2024
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Abstract
Ni (20 wt.%) catalysts supported on CeO2 were synthesized using the incipient wetness impregnation method and promoted with varying amounts of CaO (0, 5, 10, 15, 20 wt.%). The catalysts were evaluated in dry reforming of methane (DRM) at 650 °C for [...] Read more.
Ni (20 wt.%) catalysts supported on CeO2 were synthesized using the incipient wetness impregnation method and promoted with varying amounts of CaO (0, 5, 10, 15, 20 wt.%). The catalysts were evaluated in dry reforming of methane (DRM) at 650 °C for 24 h. Fresh catalysts were characterized by XRD, WD-XRF, H2-TPR, N2 physisorption, HDP, SEM, and FT-IR spectroscopy (DRIFT and ATR), while spent catalysts were characterized by XRD, Raman spectroscopy, and SEM. The incorporation of 5–15 wt.% CaO on CeO2 significantly improved its catalytic performance. FT-IR analysis confirmed the presence of CaCO3 bands, indicating carbonate formation. The Ni/CeO2 catalyst with 15 wt.% CaO exhibited the highest catalytic activity. The promoted catalysts demonstrated high stability, attributed to strong interactions between CeO2, CaO, and CaCO3. However, when CaO promotion reached 20 wt.%, catalytic activity decreased. Despite large carbon formations, the catalysts maintained their stability with no significant deactivation due to sintering or coke accumulation. Full article
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