The platinum-catalyzed hydrosilylation reaction between a silicon-hydrogen and a carbon-carbon double bond is one of the foundational chemistries for the silicone industry. Since first reported in 1957, this addition reaction has been extensively used for the industrial productio [....] » Read More
How can we design solid photocatalysts? What is the decisive factor controlling photocatalytic activities? So-called bandstructure model (BSM), electrons in a valence band (VB) of a photocatalyst is photoexcited to a conduction band (CB), leaving positive holes in VB, and electro [....] » Read More
Resistive sensors based on metal oxide nanostructures are very interesting because they are tiny, simple, cheap to fabricate and to use, possibly low power consuming, and can sense almost any gas. Unfortunately, this last property is not so positive, because it means that these s [....] » Read More
Shape memory effect is a peculiar property exhibited by a series of alloy systems in the β-phase fields. These alloys have dual characteristics called thermoelasticity and superelasticity, governed by successive thermal and stress induced martensitic transformations, and per [....] » Read More
Among different polymers nanostructured cross-linked aromatics have the greatest potential as catalytic supports due to their exceptional thermal and chemical stability and preservation of the active phase morphology. Hyper-crosslinked aromatic polymers (HAPs) allow using its mic [....] » Read More
The study investigated the possibility of conducting mixing process in a custom mixing system equipped with a magnetic field generator. The aim of presented work was to apply magnetic fields (rotating magnetic field, static magnetic field, pulsating magnetic field and oscillating [....] » Read More
Emerging contaminants have serious effects on the environment. Especially contaminants loaded with used water, which affect fauna, flora, and contaminate soils. Antibiotics are considered as an emerged threat originated from leaking and incompletely treated wastewater loaded with [....] » Read More
Parabens, esters of p-hydroxybenzoic acid (including methylparaben (MeP), ethylparaben (EthP), propylparaben (PrP) and butylparaben (BuP)), are homologous molecules used in industry due to their antimicrobial activity. These molecules are also present naturally in many ecosystems [....] » Read More
Within this study, the potential application of grape pomace hydrochar as a potential adsorbent of lead ions from aqueous solutions will be investigated for the first time. For preparation of hydrochar, the grape pomace was hydrothermally carbonized in aqueous medium at 220 ° [....] » Read More
Development of new strategies for tandem reactions that demands composite catalyst with multifunctionality is essential for bio-oil upgradation. This work focuses on a model bio-oil-upgrading method, one-pot hydrogenation-esterification (OHE) of furfural with acetic acid for the [....] » Read More
eing renewable and clean-burning, biodiesel, originated from triglyceride oils/fats, get relevance over conventional diesel fuels. Among the different triglyceride sources, waste cooking oil has high significance in terms of price and effective use of waste material. Highly reusa [....] » Read More
Enzymes are molecules in most protein structures that catalyze important biochemical reactions in living organisms. But in the early 2000s, studies have shown that enzymes can also be used in drug synthesis. Chemical syntheses may damage the environment, require the use of chemic [....] » Read More
This work performs a numerical investigation of time-dependent forced convection heat transfer in a rectangular openended channel fully filled with a porous structure (metal foam) and saturated with a phase change material (PCM) which is the paraffin. The unsteady two-dimensional [....] » Read More
TiO2 is an effective photocatalyst; however, its wide bandgap limits its usefulness to the UV region. As a solution to this problem, a convenient route was developed for the selective preparation of two stable nanocomposites, Ti3+/TiO2 /CNT and Ti3+/TiO2 /carbon layer, from the s [....] » Read More
Static or alternating magnetic fields may be used to increase the process intensity instead of the mechanical mixing. Static magnetic fields are used as electromagnetic brakes and alternating magnetic fields are commonly used as electromagnetic stirrers. For example, the rotating [....] » Read More
The study on the possibility of the synthesis of iron pigments based on a waste iron(II) sulfate from the production of titanium dioxide by the Sulfate Process in Grupa Azoty Zak?ady Chemiczne “POLICE” S.A. The work uses solid wastes from the 1980s, which have not bee [....] » Read More
The production of aromatics and other petrochemicals from renewable sources will be a sustainable approach and reduce the loads on fossil resources. Eventually, it will help reduce the emission of greenhouse gases produced with these materials’ combustion. In this work, cat [....] » Read More
Concern over global climate change has spurred the development of new pathways for using biomass waste as a raw source for biofuels and commercial chemicals. The utilization of furfural and ketones as feedstocks for aldol condensation and dehydration/hydrogenation to synthesize d [....] » Read More
Catalytic processes are one of the most important branches of the chemistry. Heterogeneous catalysts which reduce the costs of the reaction and enable their easy isolation and reuse, are very important aspects of this field. One of the more and more used heterogenization method o [....] » Read More
Title : Catalytic and photocatalytic membrane reactors
Teresa Poerio, CNR-ITM, Italy
The search for alternative methods to those applied for chemical production at an industrial level, such as reduction and oxidation processes, has become more intense. Many studies emphasize the innovative potentialities and the emerged role of the membrane reactors (MRs) [1,2] f [....] » Read More
Title : Catalysts for Ethylbenzene to Styrene: Challenges & break through
Palanichamy Manikandan, Clariant Corporation, United States
Styrene is one of the major commodity chemicals/monomers used for the production of different polymeric materials such as polystyrene (PS), acrylonitrile-butadiene-styrene (ABS) and styrene-butadiene rubber, which find their use in several segments including packing materials, au [....] » Read More
Title : Nanomaterial as catalysts in photoelectrochemical energy conversion and hydrophobic recovery
Deepak Ganta, Texas A&M International Boulevard, United States
Natural plant-based dye-sensitized solar cells (DSSCs) gained significance due to their low cost, non-toxicity, environmental friendliness and availability. Plant dyes serve as a sensitizer, which absorbs sunlight and converts solar energy into electric energy with the aid of tit [....] » Read More
Title : Hierarchical porous metals manufactured by powder metallurgy and De alloying
Yuyuan Zhao, University of Liverpool, United Kingdom
This presentation gives a short overview of the characteristic properties of porous metals manufactured by powder metallurgy based space-holder methods. In this family of methods, a metal powder is first mixed with a filler material in the powder form. The mixture is then compact [....] » Read More
Title : Highly efficient functionalized calix 4 pyrrole wrapped scrupulous nanopalladium catalyst
Keyur Bhatt, Ganpat University, India
Calix(4)pyrrole-palladium nanoparticles synthesis with the help of meso-modified hydroxy calix(4)pyrrole (OHCP) derivatives. OHCP-PdNPs utilized for the C-C coupling reactions as an efficient nanocatalyst. This study includes the stability as well as pH studies of fine PdNps. OHC [....] » Read More
Title : Sustainable removal of Phosphate from aqueous solutions by Electrodeionization (EDI)
Ozgur Arar, Ege University, Turkey
Phosphorus is widely used in agriculture and industry. It is an important substance in the human body but excessive phosphorus in the water system may cause environmental problems known as eutrophication. In this work, the electrodeionization (EDI) technique was applied for the r [....] » Read More
Title : Computational design of highly active electrocatalysts for oxygen evolution reaction
Hyeyoung Shin, Chungnam National University, Korea, Republic of
Electrocatalyst is a key component to applications of electrochemistry in energy and environment. Metal oxides/ oxyhydroxides are promising electrocatalysts beyond metals which have been mainly used as electocatalysts but suffered from its intrinsic limitation in the optimization [....] » Read More
Title : Characterization of petroleum fractions by in situ EPR spectroscopy
Ben Tayeb Karima, University of Lille, France
The behavior and the structural properties of organic radical species (ORs) in their native hydrocarbon environment as a function of temperature was investigated by electron paramagnetic resonance spectroscopy (EPR). Five petroleum fractions derived from the same initial crude oi [....] » Read More
Title : Palladium-catalyzed benzylic like nucleophilic substitution of benzofuran 2 ylmethyl acetate with N, S, O and C soft nucleophiles
Antonia Iazzetti, Catholic University of Sacred Heart, Italy
The benzo[b]furan core is a motif present in several natural and unnatural pharmacologically active compounds exhibiting various biological properties including anti-infiammatory, anti-oxidant, anti-arrhythmic, hemostatic, antimicrobial, anti-viral, antifungal, and anti-tumor act [....] » Read More
Title : Effect of tunable redox behavior of bis chelate substituted1, 10 phenantroline Cu(II) complexes on its reaction with superoxide anion in DMSO. Toward a simple criterion to identify a SOD like mechanism
Mayra E Manzanera Estrada, Zacatecas Sur Higher Technological Institute, Mexico
I n this work we report a series of Cu(II) complexes [Cu(N-N)2 (X)] +, (N-N = substituted 1,10-phenanthroline derivatives and X = Cl− or NO3 −), with tunable E1/2 for electrochemical reduction [CuII(N-N)2 (X)]+ + 1e− ? [CuI (N-N)2 ]+X−. The disproportion o [....] » Read More
Title : Green solvents as a new tool for olefin metathesis
Ervin Kovacs, Research Centre for Natural Sciences, Hungary
Olefin metathesis plays an important role in the field of pharmaceuticals, materials and petrochemical processes. Olefin metathesis is a catalytic process which involves a pair of carbon-carbon double bonds to be rearranged in order to form new products. This can be more valuable [....] » Read More
Title : Transition metal catalyzed site-selective C H functionalization of N heteroaromatics
Devalina Ray, Amity University, India
Nitrogen containing heterocycles and their analogues are ubiquitous organic scaffolds found in nature and are known as medicinally important pharmacophores, among which azoles, pyrroles, indoles and quinolines have the most frequent occurrence. Hence, the synthetic exploration an [....] » Read More
Title : Supercritical fluids as reaction media for scalable production of carbon nanomaterials
Haider Almkhelfe, Kansas State University, Iraq
We have demonstrated scalable and selective synthesis of carbon nanotubes (CNTs), carbon nanofibers (CNFs), and onion-like carbon (OLC) in a batch reactor using supercritical fluids (SCF) as reaction media. The process utilizes toluene and alcohols (ethanol, propanol, and butanol [....] » Read More
Title : Development of NiZn Bimetallic Catalysts for Hydrogen Evolution via Selective Dehydrogenation of Methylcyclohexane
Anaam Al Shaikh Ali, Saudi Aramco, Research and Development Center, Saudi Arabia
Liquid organic chemical hydride is a promising candidate for hydrogen storage and its easy transport. Dehydrogenation of methylcyclohexane (MCH) to toluene (TOL) has been considered as one of the feasible cycles for hydrogen carrier, but selective dehydrogenation of MCH has onl [....] » Read More
Title : Heck catalysis of palladium nanoparticles obtained in different reducing systems
Rocio Redon, National Autonomous University of Mexico, Mexico
Palladium(0) nanoparticles have been widely used in cross coupling reactions, including Heck reactions. For this study, we obtained palladium(0) nanoparticles in colloidal suspension using different combinations of solvents and reducing methods under aerobic conditions. The varia [....] » Read More
Title : Teaching and learning Chemistry in context with Nanotechnology application
Riam Abu Much, The Academic Arab College for Education in Haifa, Israel
Nanoscience and nanotechnology (NST) are at the forefront of modern science in the 21st century. Nanotechnology applications are penetrating all aspects of society, affecting humans’ everyday life and needs, in addition to their great contribution to the prosperity of the w [....] » Read More
Title : Degradation of non-steroidal drug under solar irradiation In the presence of Nickelate nanopowders
Boucheloukh Hadjira, University of Constantine, Algeria
To optimize water purification and wastewater treatment by heterogeneous photocatalysis we utilize a NiFe2 O4 or as a catalyst and solar irradiation as a source of energy. In this concept an organic substance present in many industrial effluents was chosen: naproxen ((S)-6-methox [....] » Read More
Title : Mathematical modeling of the adsorption process with variable conditions
Miryusif Mirbabayev, Azerbaijan Technical University, Azerbaijan
In modern chemical technology, adsorption devices are widely used for the interaction of substances in various states of aggregation. The desire to intensify the operation of industrial adsorbers leads to an increase in the speed of phase movement, an increase in local and averag [....] » Read More