Biodiesel production was carried out from soybean, canola and cottonseed oils along with poultry fat using catalytic potassium hydroxide. Further, the physical properties of biodiesel were studied with addition of ethyl levulinate ethyl 4-oxopentanoate), short-chain alcohols ethanol, isopropanol and butanol), and commercial cold flow improver CFI) additives. The effects of adding ethyl levulinate, short-chain alcohols, …
Tag Archive: Chemistry
Feb
10
Nanoporous carbons derived from binary carbides and their optimization for hydrogen storage
On-board hydrogen storage is one of the major hurdles for success of hydrogen economy. Hydrogen storage using physisorption technique demands highly porous materials. Carbide derived carbons CDC), a new class of porous carbons produced by thermo chemical etching of metal atoms from carbides were selected as a method for producing highly porous material for hydrogen …
Jan
20
Synthesis, photostability and photocatalytic properties of water-suspended cadmium selenide and cadmium selenide/cadmium sulfide quantum dots
Photocatalysis offers exciting opportunities in the development of a renewable energy source and environmentally-friendly chemical processes. Previous studies focused on titanium dioxide and non-oxide semiconductor nanoparticles (quantum dots), such as CdS, ZnS, MoS2 for photocatalytic breakdown of organic molecules. Catalytic performance has been limited by materials issues, e.g. low quantum yields and photocorrosion. CdSe quantum …
Jan
20
Development of a biomimetic sensor through molecular imprinting
Molecular imprinting is a technique for creating synthetic receptor sites in a polymer. In this research, a molecularly imprinted polymer MIP) biomimetic sensor was formed for theophylline using a copolymer of two monomers, methacrylic acid and ethylene glycol dimethacrylate. The presence of theophylline in the biomimetic sensor was measured using cyclic voltammetry, specifically, the corresponding …
Jan
20
Exploration of new transition metal based porous materials
Hybrid inorganic-organic materials represent an important new direction in the field of materials chemistry, combining the structural diversity of organic molecules with the diverse optical, magnetic, electronic, and catalytic properties found throughout the periodic table. Of the 13,000 such materials characterized to date, the vast majority are coordination polymers in which isolated metal atoms or …
Jan
20
Understanding and modifying titanium dioxide for aqueous organic photodegradation
Photocatalysis with semiconductor has recently emerged as an advanced oxidation process for environmental decontamination. It is safe and versatile, and consumes only light. It is very promising for solving the environmental problems in the most economic way. TiO2 of anatase phase has proven to be the most promising semiconductor photocatalyst for widespread environmental applications because …
Jan
20
Radius of curvature effect probed by transition metal substituted mesoporous molecular sieve materials
Catalysis is both an exceptional intellectual challenge and critically important to energy production and utilization, to chemical manufacturing, and to the minimization of environmental impact of these processes. The scientific basis of catalyst preparation, the so called design of the catalyst, plays a key role in and lays the fundamental base of the development of …
Jan
20
Viscoelastic properties of polybutadiene: Combination of theory and molecular dynamics simulations
In this work the description of a methodology that allows accurate calculation of viscoelastic properties of polymers using combinations of the molecular theories and computer simulations is presented. This methodology includes molecular dynamics simulations and atomic trajectory analysis of relatively short polymer oligomers, while molecular theories extend and extrapolate properties to highly entangled long chain …
Jan
20
Investigation of nanostructured iron and manganese oxides as novel intercalation hosts for lithium
Rechargeable lithium battery systems are being pushed to the limits of their performance in modern portable devices, with increasing demands for higher energy and higher power. The intercalation cathode or positive electrode in these batteries is one of the primary bottlenecks in terms of performance. In this thesis, investigation of nanostructured iron and manganese oxide …
Jan
20
Ethylene-bis(indenyl) catalytic complexes: Efficient synthesis, introduction of the active metal species and immobilization
With more than 80% of industrial chemical processes incorporating a catalytic reaction, catalysis has emerged as a leading technology for improving the efficiency and minimizing chemical waste. Furthermore, in spite of the recent advances in homogeneous and bio-catalysis, heterogeneous catalysis remains the preferred method for industrial processes, due to the advantages, such as easy catalyst …