Defective acidic 2D COF based catalysts for boosting performance of polyoxymethylene diethyl ethers synthesis under mild conditions

2021 ◽  
Author(s):  
Guoqin Wang ◽  
Gangli Zhu ◽  
Yong Ding ◽  
Chungu Xia ◽  
Fang Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Fuel Properties ◽  
Fuel Additives ◽  
Mild Conditions ◽  
Oxygenated Fuel

Polyoxymethylene diethyl ethers (PODEEn) are oxygenated fuel additives of high performance due to their advantageous fuel properties. PODEEn could alleviate carbon debt as the production could utilize bioethanol and biomass...

scholarly journals Homogeneous Catalyzed Valorization of Furanics: A Sustainable Bridge to Fuels and Chemicals

Catalysts ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1371
Author(s):  
Rosa Padilla ◽  
Sakhitha Koranchalil ◽  
Martin Nielsen
Keyword(s):  
Homogeneous Catalysis ◽  
High Performance ◽  
Sustainable Production ◽  
Biomass Valorization ◽  
Complex Chemical ◽  
Mild Conditions ◽  
High Performance Polymers ◽  
Organometallic Catalysis ◽  
The Future ◽  
Fuels And Chemicals

The development of efficient biomass valorization is imperative for the future sustainable production of chemicals and fuels. Particularly, the last decade has witnessed the development of a plethora of effective and selective transformations of bio-based furanics using homogeneous organometallic catalysis under mild conditions. In this review, we describe some of the advances regarding the conversion of target furanics into value chemicals, monomers for high-performance polymers and materials, and pharmaceutical key intermediates using homogeneous catalysis. Finally, the incorporation of furanic skeletons into complex chemical architectures by multifunctionalization routes is also described.

scholarly journals Review on the Relationship Between Liquid Aerospace Fuel Composition and Their Physicochemical Properties

2020 ◽  
Author(s):  
Xiaoyu Wang ◽  
Tinghao Jia ◽  
Lun Pan ◽  
Qing Liu ◽  
Yunming Fang ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Physicochemical Properties ◽  
High Performance ◽  
Freezing Point ◽  
Operating Conditions ◽  
Hydrocarbon Fuels ◽  
Least Square ◽  
Fuel Properties ◽  
Molar Ratio ◽  
Fuel Composition

AbstractThe development of advanced air transportation has raised new demands for high-performance liquid hydrocarbon fuels. However, the measurement of fuel properties is time-consuming, cost-intensive, and limited to the operating conditions. The physicochemical properties of aerospace fuels are directly influenced by chemical composition. Thus, a thorough investigation should be conducted on the inherent relationship between fuel properties and composition for the design and synthesis of high-grade fuels and the prediction of fuel properties in the future. This work summarized the effects of fuel composition and hydrocarbon molecular structure on the fuel physicochemical properties, including density, net heat of combustion (NHOC), low-temperature fluidity (viscosity and freezing point), flash point, and thermal-oxidative stability. Several correlations and predictions of fuel properties from chemical composition were reviewed. Additionally, we correlated the fuel properties with hydrogen/carbon molar ratios (nH/C) and molecular weight (M). The results from the least-square method implicate that the coupling of H/C molar ratio and M is suitable for the estimation of density, NHOC, viscosity and effectiveness for the design, manufacture, and evaluation of aviation hydrocarbon fuels.

scholarly journals An Overview of Recent Research in the Conversion of Glycerol into Biofuels, Fuel Additives and other Bio-Based Chemicals

Catalysts ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 15 ◽  
Author(s):  
Usman Nda-Umar ◽  
Irmawati Ramli ◽  
Yun Taufiq-Yap ◽  
Ernee Muhamad
Keyword(s):  
Renewable Energy ◽  
Fossil Fuels ◽  
Biodiesel Production ◽  
Glycerol Carbonate ◽  
Special Focus ◽  
Fuel Additives ◽  
Glycerol Ethers ◽  
Polymer Precursors ◽  
Oxygenated Fuel ◽  
Research Findings

The depletion of fossil fuels has heightened research and utilization of renewable energy such as biodiesel. However, this has thrown up another challenge of significant increase in its byproduct, glycerol. In view of the characteristics and potentials of glycerol, efforts are on the increase to convert it to higher-value products, which will in turn improve the overall economics of biodiesel production. These high-value products include biofuels, oxygenated fuel additives, polymer precursors and other industrial bio-based chemicals. This review gives up-to-date research findings in the conversion of glycerol to the above high-value products, with a special focus on the performance of the catalysts used and their challenges. The specific products reviewed in this paper include hydrogen, ethanol, methanol, acetin, glycerol ethers, solketal, acetal, acrolein, glycerol carbonate, 1,3-propanediol, polyglycerol and olefins.

scholarly journals The Effect of Oxygenated Fuel Properties on Mechanism of Inhibition in Particulate Matter

2008 ◽  
Vol 3 (2) ◽  
pp. 436-443
Author(s):  
Hiroshi KITAGAWA ◽  
Shigeru TOSAKA ◽  
Yasuhiro FUJIWARA ◽  
Tadashi MURAYAMA
Keyword(s):  
Particulate Matter ◽  
Fuel Properties ◽  
Mechanism Of Inhibition ◽  
Oxygenated Fuel

scholarly journals High Performance Redox Initiating Systems Based on the Interaction of Silane with Metal Complexes: A Unique Platform for the Preparation of Composites

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1602
Author(s):  
Ahmad Arar ◽  
Haifaa Mokbel ◽  
Frédéric Dumur ◽  
Jacques Lalevée
Keyword(s):  
Metal Complexes ◽  
Aromatic Amines ◽  
High Performance ◽  
Room Temperature ◽  
Hazardous Substances ◽  
Gel Time ◽  
Chemical Mechanisms ◽  
Mild Conditions ◽  
Spin Resonance ◽  
Methacrylate Monomers

Currently, Redox Initiating Systems (RISs) of Free Radical Polymerization (FRP) are mainly based on the interaction of aromatic amines with peroxides (e.g., dibenzoyl peroxide (BPO)) that can be both toxic and unstable. In the present work, we aim to replace these hazardous substances in new RIS that can be peroxide-free and amine-free. Our redox two components (2K) initiating system is based on diphenylsilane (DPS) as reducing agent combined with different metal complexes (Mn(acac)2, Cu(AAEMA)2 or Fe(acac)3) as oxidizing agents. For the new proposed RIS, an excellent reactivity is found for the polymerization of benchmark methacrylate monomers under mild conditions (redox polymerization done under air and at room temperature); remarkably, it is also possible to finely control the gel time. Different techniques (optical pyrometry, Real-Time FTIR spectroscopy, Cyclic Voltammetry and Electron Spin Resonance (ESR)) were used to follow the polymerization processes but also to shed some light on the new redox chemical mechanisms.

Conversion of biomass-derived levulinate esters to γ-valerolactone with a robust CuNi bimetallic catalyst

2020 ◽  
Vol 44 (36) ◽  
pp. 15671-15676
Author(s):  
Shuai Zhang ◽  
Jie Li ◽  
Ning-Zhao Shang ◽  
Shu-Tao Gao ◽  
Chun Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Bimetallic Catalyst ◽  
Transfer Hydrogenation ◽  
Mild Conditions

A high-performance Cu–Ni bimetallic catalyst supported on Zr–Al oxides was fabricated for catalyzing the transfer hydrogenation of levulinate esters to γ-valerolactone (GVL) under mild conditions.

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