4.8 Article

Electronic modulation of metal-support interactions improves polypropylene hydrogenolysis over ruthenium catalysts

Related references

Note: Only part of the references are listed.
Article Chemistry, Multidisciplinary

Effect of reaction conditions on the hydrogenolysis of polypropylene and polyethylene into gas and liquid alkanes

Linxiao Chen et al.

Summary: Hydrogenolysis of polypropylene (PP) and polyethylene (PE) can convert these plastics into smaller hydrocarbons. Among transition metals, ruthenium (Ru) is the most effective in producing C1-C38 alkane mixtures. The branching degree of the products depends on the position of the C-C cleavage and can be tuned by the pressure of H2.

REACTION CHEMISTRY & ENGINEERING (2022)

Article Environmental Sciences

Challenges and strategies for effective plastic waste management during and post COVID-19 pandemic

Kumar Raja Vanapalli et al.

Summary: The COVID-19 pandemic has exacerbated the challenges of plastic waste management, calling for immediate actions such as scientific sterilization and sealed disposal of contaminated plastic wastes, as well as investments in circular technologies and environmentally friendly materials. International cooperation and policy advocacy are also crucial in addressing the issue.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

Article Engineering, Environmental

Increased plastic pollution due to COVID-19 pandemic: Challenges and recommendations

Ana L. Patricio Silva et al.

Summary: This article provides a comprehensive overview of the impact of COVID-19 on macroplastic pollution, emphasizing the need for future measures to balance public health and environmental safety, advocating for a shift towards sustainable alternatives, maintaining the plastic issue as a top priority on the political agenda, and suggesting early discussions on this topic.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Chemistry, Physical

Hydrogen Adsorption at the Au/TiO2 Interface: Quantitative Determination and Spectroscopic Signature of the Reactive Interface Hydroxyl Groups at the Active Site

Akbar Mahdavi-Shakib et al.

Summary: Infrared spectroscopy reveals that H-2 adsorption on Au/TiO2 catalysts occurs heterolytically at the metal-support interface, generating stable protonated MSI hydroxyls. Au modifies the local structural and electronic properties of the support, leading to an increase in the basicity of electron-rich MSI hydroxyls. This synergism between Au and TiO2 results in electron-deficient Au particles and more electron-rich MSI hydroxyls, contributing to stronger Lewis acids and Bronsted bases, respectively.

ACS CATALYSIS (2021)

Article Chemistry, Physical

Low-temperature catalytic upgrading of waste polyolefinic plastics into liquid fuels and waxes

Yosuke Nakaji et al.

Summary: A new low-temperature catalytic method using CeO2-supported Ru (Ru/CeO2) catalyst has been developed for upgrading waste polyolefinic plastics to valuable chemicals such as liquid fuels and waxes, with high yields of 92%. This catalyst is effective in hydrogenolysis of various polyethylenes and polypropylene, providing valuable chemicals with yields ranging from 83% to 90%. Additionally, commercial plastic bags and waste polyethylenes can be transformed to valuable chemicals with yields of 91% and 88%, respectively.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Article Chemistry, Multidisciplinary

Polyolefin plastic waste hydroconversion to fuels, lubricants, and waxes: a comparative study

Pavel A. Kots et al.

Summary: Hydroconversion technologies have emerged as a prominent method for deconstructing plastic waste. Studies have compared various catalysts and plastics under different conditions, while also drawing mechanistic similarities from past literature to propose standard approaches to tune product selectivity. The research highlights the plastics materials gap and the challenges it poses, along with discussing current limitations and suggesting future work.

REACTION CHEMISTRY & ENGINEERING (2021)

Article Chemistry, Multidisciplinary

Direct Conversion of Polypropylene into Liquid Hydrocarbons on Carbon-Supported Platinum Catalysts

Shibashish D. Jaydev et al.

Summary: The study successfully converted polypropylene into liquid hydrocarbons with up to 80% selectivity for motor oil using carbon-supported platinum nanoparticles. It was found that the selectivity was controlled by the binding strength of hydrocarbon on the carbon carrier, with an optimal effect seen in carbons with high oxygen content.

CHEMSUSCHEM (2021)

Article Chemistry, Physical

Steering the selectivity in CO2 reduction on highly active Ru/TiO2 catalysts: Support particle size effects

Ali M. Abdel-Mageed et al.

Summary: By investigating oxide-supported Ru catalysts, it was found that the support particle size can influence the selectivity of the catalyst, thus controlling the formation of CO2 reduction reaction products. High-temperature treatment leads to an increase in oxygen vacancies and charge transfer, resulting in alterations to the catalyst's reaction characteristics.

JOURNAL OF CATALYSIS (2021)

Article Chemistry, Physical

Polypropylene Plastic Waste Conversion to Lubricants over Ru/TiO2 Catalysts

Pavel A. Kots et al.

Summary: Ruthenium deposited on titania is shown to be an active and selective catalyst in converting polypropylene into valuable lubricants. This method has the potential to promote plastic recycling and upcycling, contributing to environmental protection.

ACS CATALYSIS (2021)

Article Chemistry, Multidisciplinary

Hydrogenolysis of Polypropylene and Mixed Polyolefin Plastic Waste over Ru/C to Produce Liquid Alkanes

Julie E. Rorrer et al.

Summary: Catalytic depolymerization of polyolefins is a promising chemical recycling strategy utilizing noble metal and hydrogen for breaking strong C-C bonds. The study investigated the conversion of polypropylene under mild conditions, demonstrating trade-offs between product yield and temperature, hydrogen pressure, and reaction time. The characterized catalyst was found to be recyclable and effective in depolymerizing a mixture of high-density polyethylene and PP, showcasing feasibility for mixed polyolefin waste streams.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2021)

Article Chemistry, Multidisciplinary

Polyethylene Hydrogenolysis at Mild Conditions over Ruthenium on Tungstated Zirconia

Cong Wang et al.

Summary: The study demonstrates that using Ru-WZr as a hydrogenolysis catalyst can effectively suppress methane formation and produce products in the diesel and wax/lubricant base-oil range. The enhanced performance of the catalyst is showcased in single-use LDPE consumables, providing a new approach for environmentally friendly plastic recycling.

JACS AU (2021)

Article Chemistry, Physical

Deconstruction of high-density polyethylene into liquid hydrocarbon fuels and lubricants by hydrogenolysis over Ru catalyst

Chuhua Jia et al.

Summary: The report successfully achieved the depolymerization of high-density polyethylene using a Ru/C catalyst under relatively mild conditions, with maximum yields of 60.8% and 31.6% for jet-fuel and lubricant-range hydrocarbons respectively. After optimizing the reaction conditions, the total yield reached approximately 90% within only 1 hour. The solvation of PE in different solvents was found to determine the depolymerization reaction kinetics.

CHEM CATALYSIS (2021)

Article Chemistry, Multidisciplinary

Conversion of Polyolefin Waste to Liquid Alkanes with Ru-Based Catalysts under Mild Conditions

Julie E. Rorrer et al.

Summary: Chemical upcycling of waste polyolefins via hydrogenolysis using Ru/C catalysts demonstrates high activity and selectivity in the conversion of polyethylene into liquid alkanes and light alkane gases under mild conditions. The study also shows the feasibility of producing C-7-C-45 alkanes from long chain, low-density polyethylene and postconsumer LDPE plastic bottles, providing promising pathways for plastic waste valorization using Ru-based catalysts.

JACS AU (2021)

Article Multidisciplinary Sciences

U1 snRNP regulates cancer cell migration and invasion in vitro

Jung-Min Oh et al.

NATURE COMMUNICATIONS (2020)

Article Chemistry, Multidisciplinary

Controlling CO2Hydrogenation Selectivity by Metal-Supported Electron Transfer

Xiaoyu Li et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

Article Chemistry, Physical

Ruthenium decorated single walled carbon nanotube for molecular hydrogen storage: A first-principle study

Valeria Verdinelli et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2019)

Article Biochemical Research Methods

ssNake: A cross-platform open-source NMR data processing and fitting application

S. G. J. van Meerten et al.

JOURNAL OF MAGNETIC RESONANCE (2019)

Article Environmental Sciences

Strategies to reduce the global carbon footprint of plastics

Jiajia Zheng et al.

NATURE CLIMATE CHANGE (2019)

Article Chemistry, Multidisciplinary

Upcycling Single-Use Polyethylene into High-Quality Liquid Products

Gokhan Celik et al.

ACS CENTRAL SCIENCE (2019)

Article Chemistry, Physical

H-doped TiO2-x prepared with MgH2 for highly efficient solar-driven hydrogen production

Apurba Sinhamahapatra et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2018)

Article Chemistry, Multidisciplinary

H-2 Oxidation over Supported Au Nanoparticle Catalysts: Evidence for Heterolytic H-2 Activation at the Metal-Support Interface

Todd Whittaker et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2018)

Article Chemistry, Physical

Vibrational-Electrical Properties Relationship in Donor-Doped TiO2 by Raman Spectroscopy

P. Mazzolini et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2016)

Article Chemistry, Physical

Hydrogen treated anatase TiO2: a new experimental approach and further insights from theory

Manan Mehta et al.

JOURNAL OF MATERIALS CHEMISTRY A (2016)

Article Chemistry, Physical

Delicate Distinction between OH Groups on Proton-Exchanged H-Chabazite and H-SAPO-34 Molecular Sieves

Istvan Halasz et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2015)

Article Chemistry, Physical

Hydrogen spillover on Rh/TiO2: the FTIR study of donated electrons, co-adsorbed CO and H/D exchange

D. Panayotov et al.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2015)

Article Chemistry, Physical

Mechanistic Pathways for Methylcyclohexane Hydrogenolysis over Supported Ir Catalysts

Hui Shi et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2014)

Article Chemistry, Physical

Tuning the Fermi Level and the Kinetics of Surface States of TiO2 Nanorods by Means of Ammonia Treatments

Cristian Fabrega et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2013)

Article Chemistry, Multidisciplinary

Transition-State Enthalpy and Entropy Effects on Reactivity and Selectivity in Hydrogenolysis of n-Alkanes

David W. Flaherty et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2013)

Article Chemistry, Multidisciplinary

Effect of the Damping Function in Dispersion Corrected Density Functional Theory

Stefan Grimme et al.

JOURNAL OF COMPUTATIONAL CHEMISTRY (2011)

Article Chemistry, Physical

Reduced and n-Type Doped TiO2: Nature of Ti3+ Species

Cristiana Di Valentin et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2009)

Article Chemistry, Physical

H-2-solid-state-NMR study of hydrogen adsorbed on catalytically active ruthenium coated mesoporous silica materials

Bernadeta Walaszek et al.

SOLID STATE NUCLEAR MAGNETIC RESONANCE (2009)

Review Chemistry, Physical

Year-2008 nuclear quadrupole moments

Pekka Pyykko

MOLECULAR PHYSICS (2008)

Article Chemistry, Multidisciplinary

Distributions of conduction electrons as manifested in MAS NMR of gallium nitride

JP Yesinowski et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2006)