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Catalysts, Volume 14, Issue 8

2024 August - 85 articles

Cover Story: Aging is one of the key steps in the preparation of highly active Cu/ZnO-based catalysts for use in the production of methanol. An initially amorphous precipitate transforms into the crystalline precursor phase of zincian malachite, which is characterized by the periodic arrangement of Cu and Zn atoms and has proven advantageous for the quality of the final catalyst. However, aging generally takes between 30 minutes and multiple hours. In this study, we show that aging can be accelerated by more than 90 % when the freshly precipitated suspension is seeded with already aged zincian malachite crystals. Seeding did not alter the physicochemical properties of the aged precursor. Consequently, the catalyst performance in the synthesis of methanol from CO2, as well as from a CO/CO2 mixture, was identical to a catalyst from an unseeded preparation. View this paper
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Articles (85)

  • Article
  • Open Access
5 Citations
2,971 Views
15 Pages

Biodiesel Production from Waste Frying Oil (WFO) Using a Biomass Ash-Based Catalyst

  • Benjamín Nahuelcura,
  • María Eugenia González,
  • Nicolas Gutierrez,
  • Jaime Ñanculeo and
  • Juan Miguel Romero-García

22 August 2024

Biodiesel, an eco-friendly alternative to conventional fossil fuels, offers reduced emissions like carbon dioxide, sulfur oxides, and soot. This study explores biodiesel production from a blend of waste oils using a novel biomass-based catalyst deriv...

  • Feature Paper
  • Review
  • Open Access
3 Citations
6,082 Views
40 Pages

22 August 2024

The bulk and surface properties of materials based on nickel and aluminum oxides and hydroxides, as such or after reduction processes, are reviewed and discussed critically. The actual and potential industrial applications of these materials, both in...

  • Article
  • Open Access
4 Citations
2,207 Views
23 Pages

Design and Performance of CuNi-rGO and Ag-CuNi-rGO Composite Electrodes for Use in Fuel Cells

  • Mohamed Shaban,
  • Aya Mohamed,
  • Mohamed G. M. Kordy,
  • Hamad AlMohamadi,
  • M. F. Eissa and
  • Hany Hamdy

22 August 2024

This work developed new electrocatalysts for direct alcohol oxidation fuel cells (DAFCs) by using graphene and reduced graphene oxides (GO and rGO) as supporting nanomaterials for copper–nickel (CuNi) nanocomposites. The manufacture of CuNi, Cu...

  • Article
  • Open Access
1 Citations
1,357 Views
12 Pages

22 August 2024

The reaction mechanisms of C–S borylation of aryl sulfides catalyzed with 1,4-benzoquinone (BQ) were investigated by employing the M06-2X-D3/ma-def2-SVP method and basis set. In this study, the SMD model was taken to simulate the solvent effect...

  • Article
  • Open Access
4 Citations
2,897 Views
14 Pages

22 August 2024

The synthesis of biodiesel can be achieved using either homogeneous or heterogeneous catalysts. Given the non-renewable nature of homogeneous catalysts, heterogeneous catalysts are increasingly preferred for biodiesel production. Agricultural wastes...

  • Article
  • Open Access
4 Citations
1,662 Views
14 Pages

21 August 2024

In this study, we developed novel BiOBr/WO2.72 nanocomposites (abbreviated as BO/WO) and systematically investigated their photocatalytic degradation performance against the pesticide dichlorvos under visible light irradiation. The experimental resul...

  • Article
  • Open Access
5 Citations
3,365 Views
12 Pages

21 August 2024

Pd/C catalysts play a pivotal role in contemporary chemical industries due to their exceptional performance in diverse hydrogenation processes and organic reactions. Over the past century, researchers have extensively explored the factors influencing...

  • Article
  • Open Access
6 Citations
1,925 Views
13 Pages

Research on Cu-Site Modification of g-C3N4/CeO2-like Z-Scheme Heterojunction for Enhancing CO2 Reduction and Mechanism Insight

  • Yiying Zhou,
  • Junxi Cai,
  • Yuming Sun,
  • Shuhan Jia,
  • Zhonghuan Liu,
  • Xu Tang,
  • Bo Hu,
  • Yue Zhang,
  • Yan Yan and
  • Zhi Zhu

20 August 2024

In this work, the successful synthesis of a Cu@g-C3N4/CeO2-like Z-scheme heterojunction through hydrothermal and photo-deposition methods represents high CO2 reduction activity with remarkable CO selectivity, as evidenced by the impressive CO yield o...

  • Feature Paper
  • Article
  • Open Access
8 Citations
2,494 Views
18 Pages

Influence of UV-A Light Modulation on Phenol Mineralization by TiO2 Photocatalytic Process Coadjuvated with H2O2

  • Nicola Morante,
  • Luca De Guglielmo,
  • Nunzio Oliva,
  • Katia Monzillo,
  • Nicola Femia,
  • Giulia Di Capua,
  • Vincenzo Vaiano and
  • Diana Sannino

20 August 2024

This work examined the influence of UV-A light modulation on the photocatalytic process coadjuvated with H2O2 to mineralize phenol in an aqueous solution. A fixed-bed batch photocatalytic reactor with a flat-plate geometry, irradiated by UV-A LEDs, w...

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Catalysts - ISSN 2073-4344