Base Metal Catalysts

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

Deadline for manuscript submissions: closed (31 December 2020) | Viewed by 5292

Special Issue Editor


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Guest Editor
Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
Interests: organic synthesis; homogeneous and heterogeneous catalysis

Special Issue Information

Dear Colleagues,

The development of sustainable organic transformations is one of the main goals in chemistry, with catalysis playing a key role. However, the majority of catalytic systems are still based on precious metals such as palladium, platinum, gold, ruthenium, and rhodium. Due to the limited availability of these metals, the development of catalytic reactions using Earth-abundant, non-noble (base) metals is a topic of great interest. Gradual replacement of noble metal-based catalysts will help us to develop greener, safer, and more cost-effective chemical processes. This Special Issue aims to cover recent research progress in the field of catalysis by non-noble, base metals. We encourage scientists to submit manuscripts that show significant improvements both in homo- and heterogeneous catalysis using base metals.

Dr. Pavel Ryabchuk
Guest Editor

Manuscript Submission Information

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Keywords

  • Non-noble metals
  • Homogeneous catalysis
  • Heterogeneous catalysis
  • Iron
  • Manganese
  • Cobalt
  • Nickel
  • Copper
  • Zinc

Published Papers (1 paper)

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Research

13 pages, 3187 KiB  
Article
Probing the Surface Acidity of Supported Aluminum Bromide Catalysts
by Md Ashraful Abedin, Swarom Kanitkar, Nitin Kumar, Zi Wang, Kunlun Ding, Graham Hutchings and James J. Spivey
Catalysts 2020, 10(8), 869; https://doi.org/10.3390/catal10080869 - 3 Aug 2020
Cited by 7 | Viewed by 3825
Abstract
Solid acid catalysis is an important class of reactions. The principal advantages of solid acid catalysts as compared to their corresponding fluid acids include minimal waste and ease of product separation. One type of these catalysts is based on aluminum bromide (Al2 [...] Read more.
Solid acid catalysis is an important class of reactions. The principal advantages of solid acid catalysts as compared to their corresponding fluid acids include minimal waste and ease of product separation. One type of these catalysts is based on aluminum bromide (Al2Br6), which is a stronger Lewis acid than Al2Cl6. In this report, Al2Br6 is grafted on commercial mesoporous silica (CMS), SBA-15 and silica gel to create a solid catalyst similar to the silica-supported Al2Cl6 superacid. These supported Al2Br6 catalysts were characterized by NH3-Temperature Programmed Desorption (TPD), pyridine Diffuse Reflectance for Infrared Fourier Transform Spectroscopy (DRIFTS) and Magic Angle Spinning Nuclear Magnetic Resonance (MAS NMR). Formation of acid sites was confirmed and quantified with NH3-TPD. Both Lewis and Brønsted sites were observed with DRIFTS using pyridine as a probe molecule. In addition, thermal stability of acid sites was also studied using DRIFTS. 27Al MAS NMR analysis showed tetrahedral, pentahedral and octahedral co-ordination of Al, confirming that Al2Br6 reacted with –OH groups on silica surface. Performance of these catalysts was evaluated using acid-catalyzed 1-butene isomerization. Conversion above 80% was observed at 200 °C, corresponding to thermodynamic equilibrium. Full article
(This article belongs to the Special Issue Base Metal Catalysts)
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