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Catalytic Hydrodeoxygenation of Mixed Plastic Wastes into Sustainable Naphthenes.
JACS Au
November 2024
Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
The chemical upcycling of plastic wastes by converting them into valuable fuels and chemicals represents a sustainable approach as opposed to landfilling and incineration. However, it encounters challenges in dealing with mixed plastic wastes due to their complex composition and sorting/cleaning costs. Here, we present a one-pot hydrodeoxygenation (HDO) method for converting mixed plastic wastes containing poly(ethylene terephthalate) (PET), polycarbonate (PC), and poly(phenylene oxide) (PPO) into sustainable naphthenes under mild reaction conditions.
View Article and Find Full Text PDFBinary Adsorption Equilibria of Three CO+CH Mixtures on NIST Reference Zeolite Y (RM 8850) at Temperatures from 298 to 353 K and Pressures up to 3 MPa.
J Chem Eng Data
November 2024
Department of Chemical Engineering, Imperial College London, SW7 2AZ London, United Kingdom.
Adsorption equilibria of CO, CH, and their mixtures were measured on binderless pellets of NIST reference zeolite NaY (RM 8850) using a static gravimetric setup. The unary adsorption isotherms are reported at temperatures from 298 to 393 K up to a pressure of 3 MPa and compare favorably with independent results on RM 8850 powder. The competitive adsorption measurements were performed at temperatures from 298 to 353 K and up to 3 MPa for three premixed gas mixtures with CO molar feed compositions of 0.
View Article and Find Full Text PDFClosed-Loop Recyclable and Extrusion Reprocessable Thermosets Enabled by Guanylthiourea Structure.
Adv Sci (Weinh)
December 2024
Research Center of Resource Chemistry and Energy Materials, and State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China.
Article Synopsis
- Plastic recycling is essential for effective waste management and economic sustainability.
- A new thermoset material, made from a combination of thiourea and guanidine urea (GTUH network), offers a solution for recycling thermosets using dynamic exchange reactions and non-covalent interactions.
- This GTUH network can be easily recycled through methods like extrusion and requires minimal heating for reprocessing, which helps maintain or enhance its mechanical properties and supports closed-loop chemical recycling in various applications.
Evaluation and Comparison of Stresses Between All-on-4 and All-on-6 Treatment Concepts With Three Different Prosthetic Materials in the Maxilla: A Finite Element Analysis Study.
Cureus
October 2024
Department of Oral and Maxillofacial Surgery, Maharaja Ganga Singh Dental College and Research Centre, Sri Ganganagar, IND.
Introduction: This study aimed to evaluate the comparative analysis of stresses on and around implants and surrounding cortical bone using three different prosthetic materials in hybrid prosthesis using the all-on-4 technique and all-on-6 technique in the maxilla using finite element analysis (FEA).
Materials And Methods: An in vitro FEA study was conducted where a three-dimensional (3D) model of an edentulous maxilla and four different models of the mandible were built using ANSYS software version 18 (Ansys, Inc., Canonsburg, Pennsylvania, United States).
Analysis of Cell Wall Mechanics in Fission Yeast.
Methods Mol Biol
November 2024
Equipe Labellisée LIGUE Contre le Cancer, Institut Jacques Monod, Université Paris Cité, CNRS, Paris, France.
The growth and shape of fungal cells, such as fission yeast, are strongly constrained by the mechanics of their cell wall (CW). The cell wall encases the plasma membrane and defines instantaneous cell shapes by opposing turgor pressure-derived stress on the cell surface. Measuring cell wall mechanical properties may thus bring key insights into the regulation of cell morphogenesis, cell growth, but also cell surface integrity and survival.
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