Subject:
All Disciplines Arts & Humanities Biology & Life Sciences Business & Economics Chemistry & Materials Science Computer Science & Mathematics Engineering Environmental & Earth Sciences Medicine & Pharmacology Physical Sciences Public Health & Healthcare Social Sciences
Sort:
Hottest Latest Alphabetical (A-Z) Alphabetical (Z-A)
Type:
All Topic Review Biography
Topic Review
The Versatility in the Applications of Dithiocarbamates
Dithiocarbamate ligands have the ability to form stable complexes with transition metals, and this chelating ability has been utilized in numerous applications. The complexes have also been used to synthesize other useful compounds. 
  • 1.2K
  • 10 Mar 2022
Topic Review
The Technologies in H2S Removal from Gas Streams
Hydrogen sulfide is a toxic and corrosive gas; thus, in order to mitigate its environmental impact, its capture and removal from various emitting sources, natural and anthropogenic, is of a necessity. 
  • 743
  • 13 Mar 2023
Topic Review Peer Reviewed
The Production of Isophorone
Isophorone is a technically important compound used as a high-boiling-point solvent for coatings, adhesives, etc., and it is used as a starting material for various valuable compounds, including isophorone diisocyanate, a precursor for polyurethanes. For over 80 years, isophorone has been synthesized via base-catalyzed self-condensation of acetone. This reaction has a complex reaction mechanism with numerous possible reaction steps including the formation of isophorone, triacetone dialcohol, and ketonic resins. This review provides an overview of the different production processes of isophorone in liquid- and vapor-phase and reviews the literature-reported selectivity toward isophorone achieved using different reaction parameters and catalysts.
  • 548
  • 29 Mar 2023
Topic Review
The Pathways to Create Containers for Bacteriophage Delivery
Antimicrobial resistance is a global public health threat. One of the possible ways to solve this problem is phage therapy, but the instability of bacteriophages hinders the development of this approach. A bacteriophage delivery system that stabilizes the phage is one of the possible solutions to this problem. 
  • 351
  • 23 Feb 2022
Topic Review
The Hydrodeoxygenation of Lignin-Derived Fractions
Lignocellulosic biomass is a raw material used for the production of bio-oils and black liquors. These biomass-derived fractions offer promising paths for the production of valuable chemical products. Various catalytic methods have been investigated for upgrading the biomass-derived fractions. Researchers are interested in the hydrodeoxygenation process (HDO); in this process, the oxygen groups are eliminated by breaking the C-O bonds and water as a product. Crucial factors influencing this optimization include temperature, hydrogen pressure, catalyst selection, and physicochemical attributes of the catalyst itself, such as the surface area, porosity, and acid–base properties. However, the intrinsic nature of lignin requires careful investigation. The chemical structural network of this biopolymer is significantly influenced by factors such as plant species and extraction process. Understanding and accounting for these variables are imperative for tailoring processes that efficiently harness the potential of lignin and its derivatives.
  • 92
  • 29 Feb 2024
Topic Review
Tetrabutylammonium Bromide
During the last two decades, tetrabutylammonium bromide (TBAB) has gained significant attention as an efficient metal-free homogeneous phase-transfer catalyst. A catalytic amount of TBAB is sufficient to catalyze various alkylation, oxidation, reduction, and esterification processes. It is also employed as an efficient co-catalyst for numerous coupling reactions. It has also acted as an efficient zwitterionic solvent in many organic transformations under molten conditions.
  • 3.5K
  • 09 Feb 2021
Topic Review
Synthetic Bioactive Compounds and Chromatography
Natural and synthetic bioactive compounds occur in foods in small quantities and represent a wide group of chemical compounds. Because of the complexity of food matrices, the separation and next accurate determination of their bioactive constituents with different chemical structure requires an universal analytical methodology like liquid and gas chromatography or combination of both chromatographic techniques.
  • 416
  • 29 Oct 2021
Topic Review
Synthesis of TiO2 at the Industrial Level
Among a diverse range of dense mineral reserves found across the world, only ilmenite and rutile ores are capable of yielding titanium compounds, specifically titanium dioxide, through industrial processes. Although ilmenite and rutile are extensively used to extract TiO2 at the industrial level, through the sulphate and chloride processes, they can also be recognized to possess the potential to be employed as the raw material to synthesize other titanium compounds as well. Since titanium containing compounds possess the capability to be applied in numerous applications, such as environmental remediation, energy technologies, the pharmaceutical industry, paint industry and textile industry, exploration of the ability of these ore materials to yield titanium species is highly significant in the field of research as well as the industrial sector.
  • 459
  • 17 May 2023
Topic Review
Synthesis and Modification of Magnetic Nanoparticles
Magnetic nanoparticles (MNPs) combine their magnetic properties with other interesting characteristics, such as their small size, high surface-to-volume ratio, easy handling, and excellent biocompatibility, resulting in improved specificity and sensitivity and reduced matrix effects. They can be tailored to specific applications and have been extensively used in various fields, including biosensing and clinical diagnosis. In addition, MNPs simplify sample preparation by isolating the target analytes via magnetic separation, thus reducing the analysis time and interference phenomena and improving the analytical performance of detection. The synthesis and modification of MNPs play a crucial role in adjusting their properties for different applications.
  • 91
  • 19 Oct 2023
Topic Review
Switchable Solvents
Switchable solvents are a special class of solvents that have the ability to switch between different forms and properties, depending on external stimuli. The most common type of switchable solvents are called "ionic liquids" which are liquids made up of ions that are in a liquid state at room temperature. These solvents have unique properties that make them attractive for a wide range of applications, such as green chemistry, separation and purification processes, and energy storage. Switchable solvents are a class of solvents that can undergo reversible changes in their physical and chemical properties in response to external stimuli, such as temperature, pressure, or pH. They have gained significant attention in recent years due to their potential as more sustainable and efficient alternatives to traditional solvents in a range of applications, including industrial processes and chemical synthesis. Switchable solvents can be classified into two main categories: reversible ionic liquids (RILs) and switchable polarity solvents (SPSs). RILs are a type of switchable solvent that can change from a liquid to a solid or a gas, depending on the applied stimulus. This reversible phase transition is due to the formation or disruption of ionic interactions between the solvent molecules. RILs have been used in a range of applications, including the separation of chemicals, catalysis, and energy storage. SPSs, on the other hand, are solvents that can switch between polar and non-polar states in response to a stimulus, such as a change in pH or temperature. This switch in polarity can be used to selectively extract or dissolve different types of molecules, making them useful in a range of industrial processes, including extraction, separation, and purification. One of the main advantages of switchable solvents is their potential to reduce the environmental impact of chemical processes by replacing traditional solvents that are toxic or have a high carbon footprint. They can also improve process efficiency by reducing the need for multiple solvents and simplifying the solvent recovery process
  • 873
  • 24 Mar 2023
  • Page
  • of
  • 30
Featured Entry Collections
>>

Featured Books

>>
Encyclopedia of Social Sciences
Encyclopedia of COVID-19
Encyclopedia of Fungi
Encyclopedia of Digital Society, Industry 5.0 and Smart City
Feedback