his presentation deals with the synthesis of novel heterostructures for the degradation of emerging pollutants by photocatalysis using sunlight. It will be discussed the properties of those heterostructures based on metal oxide semiconductors assembled over several supports. In o [....] » Read More
The activation of small molecules is generally associated with transition metals (TM) and constitutes the basis of catalysis. It was believed that TM catalysts are required to facilitate processes such as the activation of H2 and other unreactive substrates. However, recent years [....] » Read More
he increasing worldwide energetic demands in the last decade’s push humankind to seek for alternatives to the actual environmental unfriendly carbon-based energy production processes. In this regard, alkaline water electrolysis, fuel cells and metal-air batteries are nowada [....] » Read More
Photoelectrochemical cells (PEC), which employ semiconductor-systems enable light-induced water splitting into oxygen and hydrogen. Microgravity experiments are crucial to understand the effects of gas bubble formation in these photoelectrochemical reactions. Drop tower experimen [....] » Read More
eterogeneous catalysis, one of the crucial technologies employed within the chemical and energy industries and electrochemical devices, is exclusively controlled by the processes occurring at the catalyst surfaces in contact with gas or liquid phase. However, the knowledge guided [....] » Read More
mprovements in the design and function of catalytic materials are crucial in solving a host of current problems including developing cleaner fuel technologies and removing environmentally harmful processes in the pharmaceutical or chemical industries. By far the most extensive in [....] » Read More
I n view of the situation that environmental issues become more serious day by day, application of the strong oxidation ability of photo-excited TiO2 for environmental purification has received growing attention.. Under this circumstance, we summarized several key requirements fo [....] » Read More
This presentation includes three works on atomically dispersed catalysts for energy-related catalysts. In the first one, a series of atomically dispersed Co catalysts with different nitrogen coordination numbers are prepared and their CO2 electroreduction catalytic performance is [....] » Read More
fter a few years of intensive research, recent studies of Anion Exchange Membrane Fuel Cells (AEMFCs) finally show cell performance at the required levels for automotive applications. This achievement was mainly due to the successful development of anion exchange membranes (AEMs) [....] » Read More
ncreasing CO2 emission attracts much interest and attention on CO2 hydrogenation to methanol. Ding et al found a process for indirect hydrogenation of CO2 via ethylene carbonate (EC) intermediate to yield methanol with ethylene glycol as the co-product, and meanwhile the obvious [....] » Read More
CO2 /Olefin copolymerization for the formation of acrylic acid is important in terms of scientific and industrial interest. There are continuous effort within framework of catalysis reduce the CO2 activation energy. Recently Ni based catalyst 1,2-bis (diphenylphosphino) ethane (D [....] » Read More
Clays modified with Heteropoly acids (HPAs) have attracted much interest as green catalysts for organic synthesis. Heteropoly acids (HPAs) have several advantages over liquid acid catalysts such as noncorrosive, environmentally benign and due to their strong acidity HPAs have att [....] » Read More
Among continuing investigations in solid state chemistry, metal-organic frameworks (MOFs) are the class of promising materials which attracted tremendous amount of attention in the past two decades. MOFs are regarded as a subclass of coordination polymers (CP) which are construct [....] » Read More
S ynthetic dyes are used highly in many industries such as textile, paper-making, printing and dye manufacturing. The dye effluents of these industries are extremely colored and the discard of these toxic wastes into collected waters can affect the environment. Mostly, dyes are c [....] » Read More
Zeolite Y is one of the most important solid acid catalysts that find immense applications in catalytic processes such as fluid catalytic cracking (FCC), acylation and cumene cracking. The technical grades of FCC catalysts require specifications that are met by dispersing the zeo [....] » Read More
The 15th of January 2019, Etihad Airways flew the first commercial passenger flight from Abu Dhabi to Amsterdam partially fueled with a sustainable biojet-fuel produced locally from plants grown in the desert of the United Arab Emirates, and refined by the Abu Dhabi National Oil [....] » Read More
nake venom thrombin-like enzymes (SVTLEs) constitute the major portion (10-24%) of snake venom and these are the second most abundant enzymes present in the crude venom. During envenomation, these enzymes had shown prominently the various pathological effects, such as disturbance [....] » Read More
eparation of photo excited electron-hole pair in a photocatalytic material, is well-known as the most important factor that determines the activity. For better carrier separations and photocatalysis, heterojunction formations and/or noble-metal cocatalysts have been suggested, an [....] » Read More
The synthesis Beta zeolite was studied by DGC and HTS methods. Beta Zeolite were compared by different synthesis methods using hydrothermal synthesis (HTS), dry gel conversion technique (DGC) with various silica to alumina ratios using structure directing agents at synthesis cond [....] » Read More
Chemical modification of polymers has recently emerged as a topic of increasing importance in macromolecular chemistry and can often lead to novel materials with desirable functional groups which are otherwise inaccessible, difficult or too expensive to prepare by conventional po [....] » Read More
OSS- Polyhedral Oligomeric Silsesquioxanes are a family of worldwide known organosilicon, threedimensional, nanosized compounds of the general [RSiO3/2]n formula, a topological analogues of the sphere. The most popular, not only because of their construction, but mainly because o [....] » Read More
The doping process, the controlled insertion of impurities into an extremely pure crystal, represents a strategic approach to improve optical and electrical properties of a device. Hybrid perovskite based solar cells have achieved high efficiency on photovoltaic applications tuni [....] » Read More
There are several electrodes for electrochemical ozone generation, for example, boron-doped diamond (BDD) electrode and tantalum oxide–platinum composite electrode. However, these electrodes are not inexpensive, cannot be achieved having large area, and cannot be prepared w [....] » Read More
I t is well known that noble metals catalysts like gold, platinum and other its alloys effectively catalyze the catalytic hydrolysis of sodium borohydride. However, such catalysts are very expensive and its application is not viable. In this study we present nobel metals free, lo [....] » Read More
ingle-atom catalysts (SACs) are the smallest entities for catalytic reactions with high atomic efficiency, activity, and selectivity. However, practical applications of SACs are limited by single atom loading of less than 2 wt.% or alternatively aggregation of the SACs to form la [....] » Read More
Asymmetric hydrogenation is one of the most important reactions to synthesize optically active compounds which are synthetic intermediates for pharmaceuticals, pesticides, and perfumes. In particular, heterogeneous catalysts have advantages in terms of practical fine chemical syn [....] » Read More
Polyhedral oligomeric silsesquioxanes (POSS) are among the most intriguing examples of well-defined, nanostructured, functionalized building blocks, which find applications in academia and industry. They have been used in the synthesis of an enormous number of hybrid (co)polymers [....] » Read More
Aniline and its derivatives are important chemical intermediates for the syntheses of dyes, pigments, pharmaceuticals, polymers, agrochemicals and other fine chemicals. Heterogeneous selective hydrogenation of the NO2 functional group by hydrogen is a promising method to produce [....] » Read More
The industrial column catalytic reactors are possible to be modeled, using the new approach on the base of the physical approximations of the mechanics of continua. As a result, a convection-diffusion type model (for qualitative analysis) and an average-concentration type model ( [....] » Read More
Title : Design of Ta-and Nb single site zeolite catalysts for production of 1,3 butadiene from renewable sources
Stanislaw Dzwigaj, Sorbonne-Universite-CNRS, France
The metal ions well dispersed at zeolite framework are considered to be active sites of catalytic processes. Therefore, the incorporation of these metals into these materials as isolated tetrahedral sites appears to be the important challenge. We have earlier shown that the incor [....] » Read More
Title : Rational design of High Performance Catalysts based on Acid Base combination chemistry
Kazuaki Ishihara, Nagoya University, Japan
Catalysts are the most important substances for efficiently controlling the reactivity and selectivity of organic reactions. Although enzymes control a huge number of reactions in living systems with extremely high substrate-, chemo-, regio-, site- and stereoselectivity, their su [....] » Read More
Title : Fast hydrothermal synthesis of nanocrystalline Cs Aluminosilicate zeolites catalysts free of organic template
Eng Poh Ng, Universiti Sains Malaysia, Malaysia
Zeolites are crystalline aluminosilicates which have well defined channels and cavities. Zeolites are commonly used in ion exchange, catalysis and separation processes due to their unique crystalline structure and tunable surface properties. Subdivision of zeolites into fine part [....] » Read More
Title : Synthesis of chiral isoindolinones from chiral (E)-N-(hex-3-en-5-yn-2 yl) propiolamides via a novel Gold-Catalyzed cycloisomerization reaction pathway
Stephen Pyne, University of Wollongong, Australia
method for preparing novel chiral (E)-N-(hex-3-en-5-yn-2-yl)propiolamides 1 and their gold-catalyzed cycloisomerization reactions to give chiral isoindolinones will be presented. Of the gold catalysts screened, μ3-oxotris(triphenylphosphine)trigold(I) tetrafluoroborate, [(Ph3 [....] » Read More
Title : Magnetic field assisted electrochemical synthesis of Co-Ru nanorods for water splitting reaction
Piotr Zabinski, AGH University of Science and Technology, Poland
The article presents results of tests on potentiostatic electrodeposition of ruthenium and Co-Ru alloys. The tests applying cyclic voltammetry method with the use of gold disk electrode (RDE) allowed to define a potentials range in which it is possible to obtain ruthenium and its [....] » Read More
Title : H Species reactivity in Hydrogen spillover effect
Mohammed Bettahar, Lorraine University, France
The hydrogen spillover effect (HSPE) may be involved in both hydrogen storage, an important subject for energy applications, and hydroconversion reactions over metal supported catalysts, key processes in (bio) refineries for the fabrication of high-added value chemical products. [....] » Read More
Title : Metathesis of functionalized alkanes towards the solution to the unsolved problem
Mykyta Tretiakov, King Abdullah University of Science and Technology (KAUST), Saudi Arabia
etathesis method is widely used in fundamental research and industrial processes. It allows for the efficient and environmentally-friendly production of a variety of products, such as fuels, pharmaceuticals and organic building blocks. After the breakthrough discovery of the olef [....] » Read More
Title : Taking inspiration from molecular chemistry in nanochemistry to tune the properties of metal nanoparticles in catalysis
Karine Philippot, CNRS, France
With the huge development of nanocatalysis, the demand for metal-based nanomaterials has been fast increasing and chemists are looking for effective synthesis methods to achieve well-defined nanocatalysts and to guarantee controllable and reproducible properties. Regarding nanoch [....] » Read More
Title : Chloroform conversion into hydrocarbons by hydrodechlorination with Pd supported on activated carbons obtained by chemical activation of lignin
Jorge Bedia, Universidad Autónoma de Madrid, Spain
onversion of chloroform (TCM) by gas-phase catalytic hydrodechlorination (HDC) has been addressed to maximize the selectivity to ethane and propane hydrocarbons. Several own-made Pd (1 wt.%) catalysts have been tested. The catalysts were prepared by incipient wetness impregnation [....] » Read More
Title : Synchrotron X-ray spectroscopies for catalysis
Renfei Feng, Canadian Light Source, Canada
ynchrotron radiation source is an accelerator-based light source with extremely high brightness and some very unique properties. It enables the researches and applications which are not possible in the regular laboratories. The X-ray spectroscopy techniques available at the synch [....] » Read More
Title : Alkali-Free NiAl hydrothermally reconstructed layer double hydroxide
Nazrizawati Ahmad Tajuddin, Universiti Teknologi MARA, Malaysia
ecent developments in heterogeneous hydrotalcite (HT) synthesis have led to a proliferation of studies on various preparation steps and its application in many ways. Nowadays, transition metals such as Ni are receiving great interest from researchers due to the promising advantag [....] » Read More
Title : Electrochemical synthesis of cobalt-selenium coatings as a catalysts for hydrogen evolution
Remigiusz Kowalik, AGH University of Science and Technology, Poland
The electrochemical deposition of transition metal chalcogenides thin films has received recently much attention due to their potential applications in electrocatalysis. Among them the special attention is focused on cobaltselenium system. Usually, thin films of these materials a [....] » Read More
Title : Non-hydrolytic sol-gel synthesis of oxide and mixed oxide catalytic materials
P Hubert Mutin, CNRS- ICGM, France
Oxides and mixed oxides are used as catalytic supports or as catalysts in all the fields of heterogeneouscatalysis. Sol-gel processing is widelyused for the synthesis of these catalytic materials. Conventional sol-gel typically involves the hydrolysis and polycondensation of prec [....] » Read More
Title : Boron nitride nano materials based heterogeneous catalyst as an efficient and highly biological active synthesis of methyl piperazinyl-quinolinyl fused Benzo(c)acridinone derivatives
Arul Murugesan, Durban University of Technology, South Africa
Boron nitride nano material based solid acid catalyst was found to be an efficient and reusable sulfonic acid catalyst for the synthesis of one-pot Knoevenagel and Michael type reactions in 3, 3-dimethyl-9-(2-(4-methylpiperazin1-yl) quinolin-3-yl)-3, 4, 9, 10-tetrahydroacridin-1( [....] » Read More
Title : Influence of oxygen containing functional groups on the deposition of Pd on the activated carbon surface as catalyst carrier
Marek Wojnicki, AGH University of Science and Technology, Poland
arbon supported palladium catalyst if frequently used in chemical synthesis. The goal of the work is to shed light on the process of Pd(II) ions adsorption from aqueous solution on the activated carbon and role of oxygencontaining functional groups on the process. It is well know [....] » Read More
Title : Oxyhydride perovskites: From characterization to reactivity study
Quang Nguyen Tran, École Nationale Supérieure de Chimie de Montpellier, France
Oxyhydride perovskites adapt to either conventional ABX3 or Ruddlesden-Popper A2 BX4 structures where both anions H- and O2- are accommodated in one frame work. In ABX3 , hydride anions can substitute O2- in any sites of the BO6 octahedron, while the figure for A2 BO4 is slightly [....] » Read More
Title : Stability behaviour of Ce promoted Ni catalysts supported on modified ZrO2 with La2 O3, PO4 & WO3, for dry reforming of methane
Ahmed Sadeq Al Fatesh, King Saud University, Saudi Arabia
The dry reforming of methane reaction into a valuable synthesis gas (H2 and CO), is a potential candidate dealing with the dwindling energy resources and global warming challenges simultaneously. Syngas is known as the building block for petrochemical industry for the production [....] » Read More
Title : Green synthesis of Ni0.5Zn0.5AlFeO4 magnetic nanoparticles by tragacanth gel and its application as a photocatalyst for degradation of reactive blue 21 dye
Ali Ramazani, University of Zanjan, Iran (Islamic Republic of)
n the last decade, preparing the nano catalyst via photocatalytic capability by using the green synthesis methods has been a favorite of researchers. Plant extracts for the biological synthesis of nanoparticles have received more attention because it is inexpensive, simple, envir [....] » Read More