The concept of metal

The gap

Evidence profile

Sourced from the stated research gap and future-work section and future work and abstract of the source papers, classified as general, spanning 4 journals.

Supporting evidence — 4 representative gaps

• Phosphine-Supported Earth-Abundant Transition-Metal Catalysts for Alkene Hydrogenation (2026) · Synthesis · doi

  The development of efficient hydrogenation catalysts based on earth-abundant transition metals is a major research direction. There is a gap in improving catalyst robustness and expanding substrate scope.

  generalstated research gap
  Keywords: development efficient hydrogenation catalysts based earth-abundant transition metals
• Halloysite-Supported Cr-Based Catalysts for the CO2-Assisted Oxidative Hydrogenation of Propane (2026) · Petroleum Chemistry · doi

  Further studies can focus on optimizing the catalyst's performance and stability. The development of new catalysts and reaction conditions can lead to improved efficiency and reduced environmental impact.

  generalfuture-work section
  Keywords: further studies focus optimizing catalyst performance stability development
• Catalytic valorization of lignocellulosic biomass: progress, challenges, and emerging opportunities in metal-based catalysis (2026) · Frontiers in Catalysis · doi

  Metal-based catalysis has emerged as a cornerstone technology for lignocellulosic biomass valorization, enabling the production of fuels, chemicals, and materials from renewable feedstocks (Serrano- Ruiz et al., 2011; Corma et al., 2007b). This review has highlighted the remarkable progress achieved in developing catalytic systems for conversion of cellulose, hemicellulose, and lignin, while identifying persistent challenges that must be addressed for commercial implementation. Several key themes emerge from the current state of the art. First, the development of bifunctional catalysts that integrate metal sites with acidic or basic functionalities has enabled one-pot transformations that minimize processing steps and improve overall efficiency (Wettstein et al., 2012). Second, earth-abundant transition metal catalysts based on Ni, Co, and Cu have demonstrated performance approaching that of noble metals for many reactions, addressing cost and sustainability concerns (Chirik and Morris, 2015; Bullock et al., 2020). Third, advanced catalyst design strategies including and nanoconfinement offer new opportunities to enhance activity, selectivity, and stability (Wang et al., 2018; Mitchell et al., 2018). catalysis, bimetallic single-atom synergies, The application of artificial intelligence and machine learning to catalyst discovery promises to accelerate the identification of optimal formulations from the vast compositional space of multicomponent catalysts (Butler et al., 2018). Finally, the development of modular, intensified processes that can be deployed at scales matching biomass availability may address the logistics challenges associated with distributed biomass resources (Wright et al., 2010). While formidable, the progress reviewed herein challenges remain demonstrates that metal-based catalysis is poised to play a central role in unlocking the chemical potential of lignocellulosic biomass for a sustainable future (Rinaldi and Schuth, 2009).

  generalfuture workevidence 5/5
  Keywords: metal biomass based catalysis challenges catalysts lignocellulosic progress development catalyst emerged cornerstone technology valorization enabling
• A Heterogeneous Metal–Ligand Bifunctional Catalyst for Chemoselective Hydrogenation of α,β-Unsaturated Aldehydes (2026) · Journal of the American Chemical Society · doi

  Abstract The concept of metal–ligand bifunctional catalysts has been extensively explored in homogeneous catalysis, yet it has not been reported in conventional heterogeneous catalysis.

  generalabstractevidence 4/5
  Keywords: catalysis abstract concept metal ligand bifunctional catalysts extensively explored homogeneous reported conventional heterogeneous

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