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Related Concept Videos

Microbial Bioremediation of Plastics01:28

Microbial Bioremediation of Plastics

Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
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Reduction of Alkenes: Catalytic Hydrogenation02:13

Reduction of Alkenes: Catalytic Hydrogenation

Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
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Catalysis02:50

Catalysis

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Catalysis01:27

Catalysis

Catalysis influences the rate of chemical reactions by providing an alternative reaction pathway with lower activation energy. A catalyst speeds up a reaction, but it is not consumed during the process. The fundamental principle of catalysis is the ability of a catalyst to alter the reaction mechanism, often introducing a more efficient pathway than the uncatalyzed process.In a catalyzed reaction, the catalyst participates directly in the reaction mechanism. It interacts with reactants to form...
Heterogeneous Catalysis01:22

Heterogeneous Catalysis

Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...

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Updated: Jun 8, 2026

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes
12:08

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes

Published on: June 24, 2022

Atomically precise catalysts design toward efficient waste plastic hydrogenolysis.

Zedong Zhang1,2, Shijie Shen1, Wenwu Zhong3

  • 1Zhejiang Key Laboratory of Functional ionic membrane Materials and Technology for Hydrogen Production, Shaoxing University, Shaoxing, China.

Nature Communications
|June 6, 2026
PubMed
Summary
This summary is machine-generated.

Waste plastic hydrogenolysis converts plastics into valuable fuels and chemicals. This perspective emphasizes atomically precise active sites for catalyst design, improving efficiency and stability in plastic valorization.

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A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
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A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions

Published on: August 17, 2016

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Last Updated: Jun 8, 2026

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes
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A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
06:32

A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions

Published on: August 17, 2016

Area of Science:

  • Catalysis
  • Materials Science
  • Chemical Engineering

Background:

  • Waste plastic valorization via hydrogenolysis is crucial for sustainability.
  • Conventional catalysts face challenges in activity and stability.
  • Atomic-scale understanding is key to advancing catalyst design.

Purpose of the Study:

  • To highlight the importance of atomic active centers in hydrogenolysis.
  • To discuss key mechanistic factors for catalyst design.
  • To guide the development of efficient, atomically precise catalysts for plastic waste.

Main Methods:

  • Review of existing literature on hydrogenolysis catalysts.
  • Analysis of elementary steps at the atomic scale.
  • Focus on atomically precise active-site design principles.

Main Results:

  • Atomic active centers are fundamental to catalyst performance.
  • Understanding interfacial and ensemble effects at the atomic level is critical.
  • Techno-economic and life cycle analyses are essential for practical applications.

Conclusions:

  • Atomically precise catalyst design offers a pathway to overcome limitations in plastic hydrogenolysis.
  • Integrating mechanistic insights with economic and environmental assessments is vital for future development.
  • This perspective provides a framework for designing superior catalysts for waste plastic valorization.