5^th World Congress on Catalysis and Chemical Engineering September 5-6, 2018 Tokyo, Japan

Biography:

Sukon Phanichphant is a Professor in Materials Science at Materials Science Research Center, Faculty of Science, Chiang Mai University, Thailand. She is currently a senior researcher. Her research interests include synthesis and characterization of nanoparticles/composites for use in catalysis, medical and sensor applications as well as synthesis and characterization of conducting polymer for light-emitting devices.

Abstract:

Organic compounds from industries are one of the major causes of water pollution. Various strategies have been employed to remove these toxic compounds. One of the most interesting approaches is heterogeneous photocatalysis because the process is based on the use of solar energy, which is clean and abundant in nature. In this presentation synthesis and characterization of photocatalysts based on semiconducting metal oxides composites are presented. Synthetic techniques are hydrothermal, sonochemical, precipitation and sol-gel methods. Semiconducting metal oxides composites of interest include BiVO4/TiO2 composite; core–shell Fe3O4/SiO2/CeO2 composite, CeO2/SiO2 composite and GO/CeO2 composite. Photodegradation of dyes using the nanocomposites are discussed in terms of kinetics studies.

Biography:

Baoxin Zhang has completed his PhD majoring organometallic chemistry from Technical University of Darmstadt in Germany under the direction of Prof. Jörg J. Schneider. He is now a research fellow at Leibniz Institute for Catalysis (LIKAT) in Rostock. In the laboratory of Evonik Advanced Catalysis he is doing research in homogeneous catalysis for hydroformylation and development of phosphorus ligands. 

Abstract:

In conparison to phosphines, phosphites are stubborner ligands towards oxidation and therefore finds numerous catalytic applications at each scale. Especially in Rh-catalyzed regioselective hydroformylation of  internal olefins, they are indispensable in the isomerization in favor of linear products. Starting from a prototype of all monophosphites tris(2,4-di-tert-butylphenyl)phosphite, which has already been applied in an industrial scale, a new type of polyphosphites containing two and four the similar structural units were prepared. Their catalytic performances as well as hydrolytic stabilities were compared. In Rh-catalyzed hydroformylation of n-octenes, when the phosphite unit of the ligands was increased, the best yield was obtained from the reaction with the biphosphite. The n-selectivity is improved with the increased phosphite moiety, whilst the activity decreases. The regioselectivity is kinetically controlled. Lowering syngas pressure benefits the n-selectivity but decreases the catalyst activity. Besides, the hydrolysis pathway of one of the prepared biphosphites was clarified with in situ NMR spectroscopy. Surprisingly, its first step degradation was conducted simultaneously through three routs. The biphosphite cannot build a metal complex in a chelating manner. Instead, a binuclear Rh-complex was formed, which can further stabilize the ligand towards hydrolysis.

Biography:

Dr. Carlos Zambra has his expertise developing mathematical models and numerical simulations. The main interest are the problems that involve chemical and biochemical reactions and new process such as liquid-liquid extractions, membrane perstraction, pervaporation and membrane distillation. The biocatalysis is a new challenge for our research group but we are supported by recognized experts, Professor Lozano and Cerón from the Murcia University.  

Abstract:

The intake of natural antioxidants and waste valorisation are issues of great importance for improving human health and achieve a modern and efficient industry. Powerful natural antioxidants can be found in high concentrations in liquid waste from the olive oil industry. In this work, the effect of enzymes to increase the polyphenol concentration of the aqueous phase from olive oil wastes (“alperujo”) was studied. The high concentration of fiber in this waste suggest that biocatalysts with cellulases would useful for obtain an increase of the polyphenols concentration. Two commercial enzymes were used in different rate and concentrations. The total polyphenol content and the presence of free carbonyl group (reducing sugars) was determined by colorimetric methods with the folin-ciocalteu and the 3,5-dinitrosalicylic acid (DNS) reagent, respectively. A liquid-liquid process enzymatic assisted was carry out by one hour at 50°C and increased the phenolic content up to 1000% compared with the same test without enzymes. Use enzymes improve significantly the polyphenol concentration of the aqueous phase in olive oil wastes. The enzymes can be used to catalyze polyphenols extraction process from the olive oil wastes and thus to make the process more efficiently and economically sustainable.

Biography:

Dr. Israf Ud Din has completed his PhD at the age of 35 years from Universiti Teknologi Petronas, Malaysia. He is the Assistant Professor in Physical Chemistry at Kophat University of Science and Technology, Kohat Pakistan. He has published more than 12 papers in reputed journals and has been serving as an editorial board member of repute. 

Abstract:

A series of novel carbon nanofibers (CNFs) based Cu-ZrO₂ catalysts were synthesized by deposition precipitation method. To investigate the influence of promoter, catalysts were loaded with 1, 2, 3 and 4 wt.% ZnO and characterized by ICP-OES, HRTEM, BET, N₂O chemisorption, TPR, XPS and CO₂-TPD techniques. The results revealed that physicochemical properties of the catalysts were strongly influenced by incorporation of ZnO to the parent catalyst. Copper surface area (S_Cu) and dispersion (D_Cu) were remarkably increased by incorporation of ZnO promoter. Nevertheless, S_Cu and D_Cu were decreased when ZnO content was exceeded beyond 3 wt.%. The catalytic performance was evaluated by using autoclave slurry reactor at a pressure and temperature of 30 bar and 180 ^oC, respectively. The promotion of Cu-ZrO₂/CNFs catalyst with 3 wt.% of ZnO enhanced methanol synthesis rate from 32 to 45 g/kg.h. Notably, with the ZnO promotion the selectivity to methanol was enhanced to 92% compared to 78% of the un-promoted Cu-ZrO₂/CNFs catalyst at the expense of a lowered CO₂ conversion. In addition, the catalytic activity of this novel catalyst system for CO₂ hydrogenation to methanol was compared with the recent literature data.

Biography:

Abstract:

Reversible storage of hydrogen in the form of stable and relatively harmless chemical substances such as formic acid (FA) is one of the corner-stones of fossil fuels-free economy. Recently, Ru(III)-PC(sp³)P (where PC(sp³)P = modular dibenzobarrelene-based pincer ligand possesing a pendant functional group¹) complex has been reported as a mild and E-selective catalyst in semihydrogenation of alkynes with stoichiometric neat formic acid.² Discovery of the additive-free protocol for dehydrogenation of FA launched further studies aiming at the rational design of highly efficient catalysts for this reaction operating under neutral conditions. We now report the results of our investigation on a series of bifunctionl PC(sp³)P complexes equipped with different outer-sphere auxiliaries, that allowed to identify an amine-functionalized Ir(III)-PC(sp³)P complex, as a clean and efficient catalyst for the FA dehydrogenation. The catalyst is suitable for fuel cells applications demonstrating TON up to 5*10⁵ and TOF up to 2*10⁴ h^-1 (3.8*10⁵ and 1.2*10⁴ h^-1 neat FA). In addition to the practical value of the catalyst, experimental and computational mechanistic studies provide rationale for the design of improved next-generation catalysts.³

Biography:

Juan C. de la Fuente has completed his PhD at the Planta Piloto de Ingeniería Química (PLAPIQUI) from Universidad Nacional del Sur (Bahía Blanca, Argentina), and postdoctoral studies at Technical University of Delt (Delt, The Nederland). He is in charge of the Laboratorio de Termodinámica de Procesos at Universidad Técnica Federico Santa María (Valparaíso, Chile). He has published more than fifty papers in reputed journals related to experimental and modeling of high-pressure phase equilibria.

Abstract:

The yellow organic solid naphthalene-1,4-dione (1,4-naphtoquinone) is the central chemical structure (core) of natural and synthetized derivatives that present beneficial biological activity for the human health, e.g., 1,4-naphtoquinone pharmacophore is known to impart anticancer activity in drugs like streptonigrin, actinomycins, mitomycins, etc [1]. The study related to the biological and other valuable effects of derivatives from naphthalene-1,4-dione requires their chemical synthesis and their recovery and/or purification. Carbon dioxide (CO₂) at supercritical conditions, i.e., above its critical temperature (T_c= 304.1 K) and critical pressure (p_c= 7.38 MPa) (SC-CO₂), could be a selective inert solvent, useful to isolate a high-purity derivative while avoiding its thermal damage, and easily removed by decompression to obtain the derivative completely free of solvent [2]. The development and scale-up of a process using SC-CO₂ as solvent to recover derivatives needs experimental data and models for the physicochemical properties, particularly the solubility (mole fraction) of the derivative in SC-CO₂, which is the most relevant thermodynamic constraint. The objective of this work is to summarize and model experimental solubility data of 1,4-naphthoquinone derivatives in SC-CO₂ measured by our research team with a novel semi-empirical model [3], based on the equation of Chrastil [4], that incorporates molecular connectivity indices [5]to correlate and predict the solubility for a family of compounds in a single equation with SC-CO₂ density, and five indices calculated from solute structure. Our results indicate that the solubility of 1,4-naphthoquinone and eight derivatives can be correlated within one order of magnitude (root mean square deviation ≤ 44 %).

Biography:

Zaw Ye Maw Oo (Myanmar) is from D. Mendeleev University of Chemical Technology of Russia. Now he is attending doctoral studies by government scholarship in that university. He has published more than 30 papers in reputed journals.

Abstract:

There was obtained a highly porous cellular material of alumina carriers for catalysts. The filler used to be electro corundum, as reinforcing filler, forming on fire a bundle used porcelain. The samples were prepared by impregnating the ceramic slurry polyurethane foam (PUF), followed by drying and calcining at 1450 °C.The porosity after firing was 60 - 65 %, the compressive strength of 3.5 MPa.

Biography:

Lali  Gurchumelia, Chemist, Doctor of Technical Sciences. I work TSU Rafael Agladze Institute of Inorganic Chemistry and  Electrochemistry  (Georgia). Scope of scientific interests: chemical science, chemical engineering, ecological engineering, ecological biotechnology.  I have 55 publications, including in the Infactactatorial Journal -12. The last 10 years I have participated in 5 scientific grant. Currently I am a manager of the grant  # 216770 -   “ New type fire-extinguishing powders and foam-suspensions based on local mineral raw materials “  funded of the National Science Foundation. I  participated in many international conferences and congresses:  Nürnberg, Germany;   Toledo, Spain;   New Forest, UK; Montreal, Canada;   Istanbul, Turkey;  Elenite Holiday Village, Bulgaria; Rome, Italy; Paris, France;  Yerevan-Vanadzor;  Tbilisi, Georgia and  Ureki, Georgia.  I have many years of experience in the study and evaluation of fire–extinguisghing and  fire- protective materials.

Abstract:

       The aim of the presented investigation is the development of technology for production of new types, environmentally-safe  fire-protective covers on the basis of halogen-free,  highly efficient composite fire-extinguishing powders of local mineral raw materials. The technology for production of these materials differs from the conventional production.  It is imply and is not associated with significant economic costs, which is reflected in the low cost price of materials.  Fire-protective covers we made only by mechanical mixing of  binders - Polyurethane resins and  fillers - High-dispersed fire-extinguishing powders of our preparation, does not need addition of expensive, phosphorous and halogen-containing   flame retardants.  Such fire-extinguishing powders are manufactured by mechanical treatment and blending of local mineral raw materials, which  does not require modification with expensive, halogen containing, organic  hydrofobizing  additives, what makes the extinguishing powders  far cheaper than imported analogues.  Here it should be noted, that obtained fire-extinguishing  powders similarly of efficient flame retardants, are characterized by high inhibition properties and fire-extinguishing ability.  Therefore, such powders we used as fillers, which in composite fire-protective materials are functioning, in itself, as efficient inert flame retardants.  Mentioned fillers, similarly to serial inert flame retardants, don’t participate in the process of polymer preparation  and in contrast to them are characterized by high performance properties.

       Experimental data confirm that the developed fire-protective covers  by fire-resistance are qualified as hardly combustible materials and their performance properties are not worse than performance properties of the standard protective materials of common production.

    Thus, such fire-protective materials are environmentally-safe, very effective and far cheaper than imported analogues.  Therefore they are fulfilling completely requirements posed by normative documentation to the materials used in building processes.

Biography:

Shmakov AG, Grek GR, Kozlov VV, Litvinenko YuA. Influence of initial and boundary conditions at the nozzle exit upon diffusion combustion of a hydrogen microjet. International Journal of Hydrogen Energy

Abstract:

The objective of the present work is experimental investigation of the diffusion combustion of hydrogen microjets emanating from various micronozzles including a Laval supersonic quasi-micronozzles of different configuration and size. In what follows we focus on the characteristics of the «bottleneck flame region» depending on the microjet efflux velocity, the influence of this particular flow area upon heating of a thick-walled nozzle, and the effect of heating on the origination of the «bottleneck flame region» at variation of jet velocity up to the transonic range. Also we are interested in indications which could be helpful in experimental work to distinguish between subsonic and supersonic regimes of hydrogen jets and their combustion.[

Biography:

Dr Saeed Hajimirzaee is a KTP research associate at G-Volution who is working on the design, synthesis and development of low temperature methane oxidation catalyst. His team also working on the design and development of the honeycomb monolith with enhanced structure, which has been successfully tested in their research lab. Saeed has graduated from the University of Birmingham with PhD in Chemical Engineering in 2015. His background is heterogeneous catalysis and he has more than 6 years’ experience in this field in which he has been in close collaboration with industrial partners. He has published more than 10 papers in ISI journals in the area of catalysis, which has been highly cited by other researchers. He has been awarded several bursaries and scholarships for his research.

Abstract:

Hydroxyapatite (HAp) with chemical formula Ca₅(PO₄)₃(OH) is a naturally occurring mineral form of calcium and phosphate has interesting properties such as flexible structure, superior ion-exchange capacity, acid-base properties and therefore it has been of considerable interest as biomaterials, adsorbents and even catalyst in last decays. HAp has been used in many catalytic reactions either as support or as active catalyst. As a support for prestigious metals, it has been used as efficient heterogeneous catalyst. HAp can be synthesised by different methods such as hydrothermal, precipitation, sol-gel or microemulsion, however synthesis of nano-particles with high surface area always has been a challenging process. Main problem with HAp synthesis is agglomeration of particles which in turn lead to synthesis of HAp with  irregular shape and specific surface area less than 100 m².g^-1.It has been shown that optimising the wet process parameters can improve the particles size to synthesis HAp with surface area up to 150 m².g^-1. Alternatively, by using single surfactant or a mixture of surfactants, it is possible to increase the surface area of HAp, however, the effect of surfactant on chemical properties has not been studied. In this research, we investigate the effect of surfactant type on both morphology and chemical properties of synthesised HAp. Chemical activity of samples of HAP, which have been synthesised with different surfactants, are tested and compared in CO oxidation.

Biography:

Faisal Almarzouqi is a PhD candidate in the field of analytical and environmental chemistry at Sultan Qaboos University (Oman). He finished his master study on graphene based modifid structures via STM at paris sud 11 university (France) . At present, he is actively involved in the area of synthesis, characterization and application of nano structured photocatalytic materials for the degradation of pharmaceutical present in water and wastewater.

Abstract:

Presence of pharmaceuticals compounds in wastewater has started to threaten the health of human beings. So far, many Pharmaceuticals compounds has been detected in the wastewater and ground water. Recently, as an advanced “green” oxidation technology, photocatalytic water treatment has attracted growing attentions where the heterogeneous photocatalysis has successfully been developed and improved for better treatment of pharmaceuticals contamination. The graphite like carbon nitride (g-C3N4) has twisted research activates of light driven energy materials in new direction and dimension. This specific material exhibits high command on utilising the visible light and widely abundant elements with notable environmental stability. Herein, we study the influence of g-C3N4 nanosheets on photocatalytic degradation of different pharmaceuticals presents in aqueous solution. g-C3N4 were synthesized by thermal poly-condensation carbon and nitrogen rich precursors. The prepared samples were characterized by X-ray diffraction (XRD), UV-vis diffuse reflectance absorption spectra (UV-DRS), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM).

Biography:

Wangyang Lu was graduated from Zhejiang Sci-Tech University in 2003, got his M.Eng. degree in Materialogy in 2003, and his Ph.D. degree in Textile Engineering in 2010. He is the associate Professor of College of Materials and Textiles, Zhejiang Sci-Tech University. He has published more than 70 publications and 15 patents. As recent awards, he received the First Class Prize for Scientific and Technology Progress of China National Textile and Apparel Council. His research interests are focused on functional fibers with catalytic performance and environmental pollution control.

Abstract:

Recently, peroxymonosulfate (PMS)-based advanced oxidation processes (AOPs) have received increasing attention because of their capability and adaptability in decontamination. The couple of solar light and PMS activation is an environmentally friendly and efficient strategy for environmental remediation. Herein, the iron hexadecachlorophthalocyanine (FePcCl₁₆) was used to coordinate with graphitic carbon nitride (g-C₃N₄), which was functionalized by pyridine-based ligand isonicotinic acid (INA) to prepare a distinctive catalyst, g-C₃N₄-INA-FePcCl₁₆. The experimental results revealed that g-C₃N₄-INA-FePcCl₁₆ can activate PMS efficiently for the elimination of carbamazepine (CBZ) under visible light irradiation over a wide pH range. Upon irradiation with visible light, CBZ was destroyed by the solider g-C₃N₄ with generated sulfate (SO₄•⁻) and hydroxyl (•OH) radicals, on the other hand, high-valent iron (Fe (IV)=O) species accompanied by SO₄•⁻ and •OH radicals were produced by excited-state FePcCl₁₆ (*FePcCl₁₆) during oxidation, which is different from a traditional PMS activation system. The axial pyridine-based ligand was protected under the FePcCl₁₆ macrocyclic structure shield. Noteworthy, in the absence of visible light, g-C₃N₄-INA-FePcCl₁₆ showed a higher catalytic performance than pure g-C₃N₄, FePcCl₁₆ and a mechanical mixture of the two. This study allows for the construction of an effective and environmental catalytic system, which can be applied to purify water that contains refractory pollutants.

Biography:

Lu Qiu is a Phd candidate and experienced at Shenzhen Graduate School, Harbin Institute of Technology Post-doctor. Research area at Photocatalytic removal of organic pollutants, Preparation and characterization of environmental catalysts, Optimal design of computational fluid mechanics for reactor.

Abstract:

The M1³⁺-ZnO /M2³⁺-ZrO₂ catalyst prepared by sol-gel method exhibited highly and stably photocatalytic performance in degradation of Rhodamine-B under simulant solar light irradiation. In³⁺ doping ZnO improved ZnO providing in the composite. Composition of ZnO with Ga³⁺-ZrO₂ led to enhancement of ultraviolet light absorbance, promoting the catalytic activity and give highest activity. This is higher one time than S_m doping composite. Based on the results of S_m doping composite by prepared by the same hydrothermal method, We look forward to the discovery of a new photocatalyst that is higher in activity and stability than the P-25.