VI.—The action of ammonia on some tungsten compounds

On the Action of Piperidine and Some of Its Compounds

Ix the course of a research undertaken for another purpose I had occasion to compare the actions of several compounds of piperidine, and, as my results differ somewhat from those of other workers in this field, I have thought it wcll to publish them now, as I see no prospect oi prosecuting the subject further. The substances examined were piperidine~ a-methylpiperidine, a-ethylpiperidine~ and c...

Heterogeneous photoreduction of nitrogen to ammonia on tungsten oxide

Tungsten nanoparticles from liquid-ammonia-based synthesis.

Tungsten nanoparticles were obtained from liquid-ammonia-based synthesis via reduction of WCl6 with dissolved sodium. The W(0) nanoparticles exhibit a diameter of 1-2 nm and can be dispersed in alkanes, showing a grayish-orange color due to red-shifted plasmon resonance absorption.

a study on corrosion reasons of heat exchanger in ammonia unit

چکیده ندارد.

detection of volatile compounds of medicinal plants with some nano-sorbents using modified or new methodologies and investigation of antioxidant activity of their methanolic extracts

in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...