Europe’s leading motorhome manufacturer, Hymer AG of Germany, has integrated a direct methanol fuel cell to provide autonomous “hotel-load” power for their Hymermobile S-Class. In Japan, Yamaha is now leasing a motorbike powered by a methanol fuel cell. Many of the world’s leading ...
Headspace GC to determine the residual CFC pyridine solvent such as methanol, simple, fast, accurate and reliable measurement result, which can effectively control the quality of the drug.王琳丁海宏张智红
A crust of residual cynauric chloride left in a reactor from a previous batch reacted with the methanol (usually charged first) to form hydrogen chloride. When the base was added (usually before the chloride), vigorous evolution of carbon dioxide expelled some of the solvent. In a second ...
residual solvent take an appropriate amount of this product, accurately weigh, add dimethylformamide to dissolve and dilute to make a solution containing about 20mg per lml, as a test solution; Take toluene, tetrahydrofuran and isopropanol, precision weighing, diluted with dimethylformamide to prepare ...
solvent system was used with 0.1% formic acid (V/V) in water for channel A and 0.1% formic acid (V/V), 99.9% ACN (V/V) for channel B. At a peptide concentration of 0.5 µg µL−1for each sample 2 µL were loaded on an ACQUITY UPLC M-Class Symmetry C18 trap ...
A crust of residual cynauric chloride left in a reactor from a previous batch reacted with the methanol (usually charged first) to form hydrogen chloride. When the base was added (usually before the chloride), vigorous evolution of carbon dioxide expelled some of the solvent. In a second ...
Substitution of water with acetonitrile as the solvent from the standard condition gave rise to no products (Fig. 2a). In this case, water enables mild oxidation of methane under light irradiation. When O2 was replaced by N2 from the standard condition, leaving water as the oxidant, no ...
solvent system was used with 0.1% formic acid (V/V) in water for channel A and 0.1% formic acid (V/V), 99.9% ACN (V/V) for channel B. At a peptide concentration of 0.5 µg µL−1for each sample 2 µL were loaded on an ACQUITY UPLC M-Class Symmetry C18 trap ...
in the synthesis gas generator. The regenerated solvent is then recycled to the absorption column for reuse. When necessary, final cleanup may be accomplished by passing the process gas stream through iron oxide, zinc oxide, or activated carbon to remove residual traces of H2S or organic sulfide...
solvent are added to the polymerization reactor, where the initiator or catalyst is used as initial charge or is added with the monomers and the solvent. There are possible variations, for example use of the solvent as initial charge in the reactor, addition of the initiator or catalyst and ...