Sustainable Chemical Processes
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Recent advances on biobutanol production
Sustainable Chemical Processes - Tập 2 - Trang 1-9 - 2014
Recent studies have shown that butanol is a potential gasoline replacement that can also be blended in significant quantities with conventional diesel fuel. However, biotechnological production of butanol has some challenges such as low butanol titer, high cost feedstocks and product inhibition. The present work reviewed the technical and economic feasibility of the main technologies available to ......
Nano Cu-catalyzed efficient and selective reduction of nitroarenes under combined microwave and ultrasound irradiation
Sustainable Chemical Processes - Tập 2 - Trang 1-6 - 2014
In situ preparation of copper nanoparticles from a copper acetate precursor and its application as an efficient catalyst for the selective reduction of aromatic nitro compounds with hydrazine hydrate under combined microwave and ultrasound irradiation were described in detail. The results reveal the synergetic effect of microwave and ultrasound on the synthesis of copper nanoparticles, and formati......
Improved one-pot synthesis of N, N-diisopropyl-3-(2-Hydroxy-5-methylphenyl)-3-phenyl propanamide; a key intermediate for the preparation of racemic Tolterodine
Sustainable Chemical Processes - Tập 2 - Trang 1-6 - 2014
An improved, cost effective process for the synthesis of N,N-diisopropyl-3-(2-hydroxy-5-methylphenyl)-3-phenylpropanamide; a key intermediate for the preparation of Tolterodine and its related substances were described. The process features one pot synthesis employing inexpensive reagents.
Environmental assessment of residues generated after consecutive acid-base pretreatment of sugarcane bagasse by advanced oxidative process
Sustainable Chemical Processes - Tập 1 - Trang 1-10 - 2013
Biofuels produced from sugarcane bagasse (SB) have shown promising results as a suitable alternative of gasoline. Biofuels provide unique, strategic, environmental and socio-economic benefits. However, production of biofuels from SB has negative impact on environment due to the use of harsh chemicals during pretreatment. Consecutive sulfuric acid-sodium hydroxide pretreatment of SB is an effective......
Biomolecular assembly strategies to develop potential artificial cellulosomes
Sustainable Chemical Processes - Tập 2 - Trang 1-5 - 2014
Cellulosic biomass is a sustainable source for fuels and value-added chemicals, and is available in large quantities. One of the key challenges in biomass processing is associated with the establishment of an efficient enzymatic degradation of plant cell wall. A multi-enzymatic complex, cellulosome, was identified as a highly efficient biocatalyst for the hydrolysis of cellulosic biomass in nature......
Enzyme promiscuity: using the dark side of enzyme specificity in white biotechnology
Sustainable Chemical Processes - Tập 2 - Trang 1-9 - 2014
Enzyme promiscuity can be classified into substrate promiscuity, condition promiscuity and catalytic promiscuity. Enzyme promiscuity results in far larger ranges of organic compounds which can be obtained by biocatalysis. While early examples mostly involved use of lipases, more recent literature shows that catalytic promiscuity occurs more widely and many other classes of enzymes can be used to o......
GreenCaps: towards solid curing agents for sustainable polyurethane foams
Sustainable Chemical Processes - Tập 2 - Trang 1-6 - 2014
Testing and further investigation of organosilica microspheres functionalized with aqueous glycerol as solid curing agents for polyurethane (PU) foams confirms the potential of these materials to cure better and greener PU foams. The developed microspheres were found to be stable in the foam precursor mixture, allowing handling and mixing of the foam cans, and were shown to provide a slight improv......
Characterization of terrestrial cyanobacteria to increase process efficiency in low energy consuming production processes
Sustainable Chemical Processes - Tập 1 - Trang 1-6 - 2013
Terrestrial cyanobacteria have seldom been used for biotechnological processes, even though they offer great potential for new pharmaceutical products or other value-added substances. Particularly cyanobacteria of xeric habitats are of biotechnological interest, because they tolerate high temperatures, are desiccation-tolerant and feature low water consumption. In addition, the cyanobacteria colle......
Recent advances in application of chitosan in fuel cells
Sustainable Chemical Processes - Tập 1 - Trang 1-12 - 2013
Fuel cells are electrochemical devices which convert chemical energy into electrical energy. Fuel cells have attracted attention due to their potential as a promising alternative to traditional power sources. More recently, efficient and environmentally benign biopolymer “chitosan” have been extensively investigated as a novel material for its application in fuel cells. This biopolymer can be used......
Thermochemical processes for biofuels production from biomass
Sustainable Chemical Processes - Tập 1 - Trang 1-10 - 2013
The contribution of biomass to the world’s energy supply is presently estimated to be around 10% to 14%. The conversion of biomass to biofuels can be achieved primarily via biochemical and thermochemical processes. Recently, the use of thermochemical processes as pyrolysis and gasification has received great attention. The biomass composition and form of process conduction can affect greatly the e......
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