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Microcystins (MCs), produced by cyanobacteria(blue-green algae), are one of the most hazardous hepatotoxic toxins found in natural environment. Under the background of algae removal and growth inhibition by ultrasonic irradiation and microcystins degradation by Ultraviolet(UV) radiation, experiments were conducted to investigate the degradation of microcystins in order to evaluate the efficiency and...
The catalytic hydrolysis of dimethyl ether (DME) over H-ZSM-5 was studied by experimental and theoretical studies. We observed from the pack-bed reactor that this reaction yields methanol as product at low temperature (<;300°C), but produces other carbon-containing species at higher temperature (>;300°C). However, these observations cannot give the details of the reaction mechanisms. To clarify...
The doping of CNTs with boron appears promising in view of the changes brought about in the electronic structures by these dopants. The substitution of boron atom in carbon network gives rise to p-type doping. In this communication, we demonstrate the synthesis of high-quality boron doped DWCNTs by catalytic decomposition of tetra hydro furan (THF) and triisopropyl borate over Fe-Mo/MgO catalyst at...
Various loading amount of La-CuO/TiO2 were synthesized via a one step sol-gel process. The crystal structure and chemical properties were characterized using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). XRD analysis revealed that two characteristic peaks at 35.54° and 38.76° according to cubic CuO were observed in the X-ray diffraction patterns of La-CuO/TiO2. Ti4+, Olat into...
Lipase catalyzed of biodiesel is expensive which restricted industrial enzymatic biodiesel production. In this paper, the industrial lipase made in China was used as catalyst to catalyze the transesterification of rapeseed oil with methanol to produce biodiesel. The way of methanol feeding, the amount of lipase, the reaction temperature, the reaction time, the molar ratio of methanol to oil, the organic...
A simulation of direct dimethyl ether (DME) synthesis from syn-gas, produced via biomass gasification and catalytic reforming, has been processed on the assumption of both physical and thermodynamic equilibrium. Simulation showed that reaction temperature, pressure and syn-gas composition are have the most important effect on DME synthesis behavior. In which, low temperature and high pressure would...
Pt is one of the most employed catalysts for methanol catalysis in direct methanol fuel cell (DMFC). In this study, carbon nanotube (CNT) surface was used for catalyst reduction. By using ethylene glycol as a reducing agent, Pt catalyst precursor (H2PtCl6 · 6H2O) was reduced on the CNTs by a novel method called semi-reflux chemical reduction system (SRCRS). The SRCRS can effectively reduce the catalyst...
In this paper, in order to compare the relationship between carbon nanomaterials structure and emission properties, carbon nanomaterials were synthesized and catalytically grown in methanol using cobalt (Co) catalyst on silicon substrates. The grown material morphology was observed using SEM and was changed by growth temperature. The crystallinity of the carbon nanomaterials was measured by laser...
The objective of the study was to acquire the bovine enterokinase light chain (EKL) expressed in Pichia pastoris, which would be used in the cleavage and purification of fusion proteins. The fragment of EKL cDNA was obtained by RT-PCR from a sold bovine's duodenal mucosa, then cloned into the pUCm-T cloning vector and sequenced. Compared with the sequence deposited in GenBank, the cloned gene sequence...
Summary form only given: With the rapid depletion of liquid oil, the urgency of finding a new alternative energy is raising. The most visible way could be the utilization some energy resources which currently never or rarely used before, such as methane or natural gas. As handling liquid matter is preferable and safe, it is necessary to convert gas reactants into liquid products. One candidate of...
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