摘要:

Measurements have been made of the decrease in time of set of alkaline silica gels induced by a series of alcohols and acetone. Acetone, propyl, and butyl alcohols caused a marked increase in pH of the gel during setting. Glycol has a much smaller effect on setting time than the monohydric alcohols, while with glycerol the time of set of the alkaline gels was actually increased. Time of set is not strictly paralleled by the dielectric constant.

ISSN:1923-4287    

DOI:10.1139/cjr37b-039

出版商:NRC Research Press    

年代:1937

数据来源: NRC

摘要:

A method of removal of all hydrocarbons in natural gas other than methane is described. Pyrolysis of the higher hydrocarbons under such conditions of temperature and rate of flow that methane is not affected is used. The products of pyrolysis are easily removed by common chemical methods.

ISSN:1923-4287    

DOI:10.1139/cjr37b-040

出版商:NRC Research Press    

年代:1937

数据来源: NRC

摘要:

A precise method of determining the hydrogen and carbon content of gases is described. The method employs, in part, the methods of ultimate organic analysis by combustion over copper oxide and collection of the carbon dioxide and water formed. It is particularly suited to the analysis of combustible gases containing vapors of volatile liquids.

ISSN:1923-4287    

DOI:10.1139/cjr37b-041

出版商:NRC Research Press    

年代:1937

数据来源: NRC

摘要:

An apparatus was devised by means of which a gas and a liquid could be brought into equilibrium at any desired pressure up to 370 atm. and temperatures from 25 °C. to above 100 °C. Provision was made for the taking of samples of known volume from the liquid and gas phases in equilibrium. Analytical methods were developed to yield phase densities and compositions.

ISSN:1923-4287    

DOI:10.1139/cjr37b-042

出版商:NRC Research Press    

年代:1937

数据来源: NRC

摘要:

Mixtures of oxygen and methane at pressures from 100 to 180 atm. were passed at various temperatures between 300° and 350 °C. over some catalysts. Simple apparatus was used and analytical technique developed. The production of methanol as an important product of oxidation, together with small quantities of formaldehyde and formic acid, was shown. Yields of these three products as high as 37% of the carbon oxidized were obtained.

ISSN:1923-4287    

DOI:10.1139/cjr37b-043

出版商:NRC Research Press    

年代:1937

数据来源: NRC

摘要:

The factors limiting the utility of packings for fractionating columns are considered in detail. In view of these factors a type of packing is described which gives an effectiveness up to 20 plates per foot of height, and has a capacity at least equal to similar equipment of lower efficiency.These packings are constructed of fine mesh wire gauze, and special constructions are described for laboratory use and also for high capacity apparatus.The method of calibration is given and factors are evaluated for comparison of packings for batch and for continuous stills.

ISSN:1923-4287    

DOI:10.1139/cjr37b-044

出版商:NRC Research Press    

年代:1937

数据来源: NRC