Frontiers of Chemical Engineering in China
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Regioselective acylation of pyridoxine catalyzed by immobilized lipase in ionic liquid
Frontiers of Chemical Engineering in China - Tập 2 - Trang 301-307 - 2008
The regioselective acylation of pyridoxine catalyzed by immobilized lipase (Candida Antarctica) in 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM]PF6) has been investigated, and compared with that in acetonitrile (ACN). The acetylation of pyridoxine using acetic anhydride in [BMIM]PF6 gave comparable conversion of pyridoxine to 5-monoacetyl pyridoxine with considerably higher regioselectiv......
Benzene alkylation with long chain olefins catalyzed by ionic liquids: a review
Frontiers of Chemical Engineering in China - Tập 2 - Trang 346-352 - 2008
The introduction of ionic liquids to alkylation process gives a choice for “green production” in the petrochemical and detergent industry. A lot of papers and patents have been published using chloroaluminate ionic liquid as a novel catalyst for alkylation with high reactivity and easy separation from reactants. These included the acidity, characterization, determination and catalysis technologies......
Introduction to the special issue of the 2009 International Symposium on Crystal Engineering & Drug Delivery Systems
Frontiers of Chemical Engineering in China - Tập 4 - Trang 1-1 - 2010
Preparation and application of magnetic microsphere carriers
Frontiers of Chemical Engineering in China - Tập 1 - Trang 96-101 - 2007
Magnetic microsphere carriers have received considerable attention, primarily because of their wide applications in the fields of biomedicine and bioengineering. In this paper, preparation methods, surface modification and application of magnetic carriers are reviewed. Emphasis will be placed on recent biological and biomedical developments and trends such as enzyme immobilization, cell isolation,......
Simulating the air flow in the conveying pipe of the foreign fiber detection device
Frontiers of Chemical Engineering in China - - 2009
Cotton bales are frequently intermingled with foreign fibers which will interfere in the process of spinning, weaving and dyeing and will worsen the product quality. Nowadays, cotton fibers are sorted manually in most of the cotton textile mills with very low efficiency. There is a great demand for foreign fiber detection devices in Chinese cotton textile mills. The air flow in the conveying pipe ......
Synthesis of crystals and particles by crystallization and polymerization in droplet-based microfluidic devices
Frontiers of Chemical Engineering in China - Tập 4 - Trang 26-36 - 2010
The recent advances in crystallization and polymerization assisted by droplet-based microfluidics to synthesize micro-particles and micro-crystals are reviewed in this paper. Droplet-based microfluidic devices are powerful tools to execute some precise controls and operations on the flow inside microchannels by adjusting fluid dynamics parameters to produce monodisperse emulsions or multiple-emuls......
Mass and heat balance calculations and economic evaluation of an innovative biomass pyrolysis project
Frontiers of Chemical Engineering in China - Tập 5 - Trang 355-361 - 2011
Biomass can be converted into flammable gas, charcoal, wood vinegar, wood tar oil and noncombustible materials with thermo-chemical pyrolysis reactions. Many factors influence these processes, such as the properties of the raw materials, and temperature control and these will affect the products that are produced. Based on the data from a straw pyrolysis demonstration project, the mass and heat ba......
Surface modification of Titanium dioxide for electrophoretic particles
Frontiers of Chemical Engineering in China - Tập 1 - Trang 338-342 - 2007
To prepare stable electrophoretic ink (E Ink) needs color particles to be uniformly dispersed in the organic medium. Thus, t-he modification of inorganic particle surface is required. In this paper, Titanium dioxide modified by alumina has been studied. The surface composition and structures of modified particles have been characterized by X-ray photoelectron spectrometer (XPS), X-ray diffractomet......
Factors affecting the formation of zeolite seed layers and the effects of seed layers on the growth of zeolite silicalite-1 membranes
Frontiers of Chemical Engineering in China - Tập 1 - Trang 172-177 - 2007
The present study investigates the formation of silicalite-1 seed layers on a porous carbon support of 0.5 μm pore size and α-A12O3 supports with different pore sizes (0.1 μm and 4 μm) via the slip-casting technique. The effects of support property, seed size and solvent on the formation of seed layers were investigated in detail. The growth of silicalite-1 membranes on different seeded supports b......
Experimental study on bubble behavior and CFD simulation of large-scale slurry bubble column reactor
Frontiers of Chemical Engineering in China - Tập 4 - Trang 515-522 - 2010
Slurry bubble column reactors (SBCR) is a three-phase fluidized reactor with outstanding advantages compared with other reactors and is difficult to scale-up due to lack of information on hydrodynamics and mass transfer over a wide range of operating conditions of commercial interest. In this paper, an experiment was conducted to investigate the bubble behavior in SBCR with a height of 5600 mm and......
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