. Journal. neral, with the one-thud by volume of the illuminants inthe gas consists of propylene and higher formation of ethane is not large at any tem-perature, but the formation of methane is greaterthe higher the temperature. A decompositiontemperature of about 825C. appears most desir-able provided too great opportunity for extensivesecondary and tertiary changes is not given. It issuggested that in commercial practice the bestresults would probably be obtained by crackingthe oil in an apparatus designed and operatedprimarily for the production of gas, and th
. Journal. neral, with the one-thud by volume of the illuminants inthe gas consists of propylene and higher formation of ethane is not large at any tem-perature, but the formation of methane is greaterthe higher the temperature. A decompositiontemperature of about 825C. appears most desir-able provided too great opportunity for extensivesecondary and tertiary changes is not given. It issuggested that in commercial practice the bestresults would probably be obtained by crackingthe oil in an apparatus designed and operatedprimarily for the production of gas, and thencarljuretting the gas in a second apparatus withthe tar formed in the first.—A. S. Xalural gas at high pressures : Compressibility of . G. A. Burrell and I. W. Robertson. Bureau of Jlines. 1916. Techn. Paper Technology 31. [6 pages.] In comparing the compressibility of nattiral gas(Pitt-sljurgh) with that of an ideal gas (methane)at different pressures, the results shown in the sc,»o. CORBECTIOSe. PER CENT accompaming chart were obtamed. The practicalvalue of tlie results is apparent since, in commerce,natural gas is frequently measiu-ed at pressuresup to 40 atmospheres.—W. E. F. P. 956 Cl. IIa.—FUEL; GAS; MINERAL OILS AND WAXES. [Sept. SO, 1916. Sfjbaticrs calalytir actUvis. [Hi/drogrnalion ofrthylcnf.] V. Grassi. Nuovo CHiu., ISUO, [vi],11, i, U7—103. Soc, IJUJ. 110,ii., author has iuvstij;atoil the }i\ihvs,cnatiouof ethylene in presence of re<-ently reilm-cu copperat various temperatures between 150 and catalyst at first variahle activity,but gives constant and reproducible results afterit has been subjected for several hours to theaction of a circulatiujr mixture of ethylene andhvilrotren at 250^ C. The thermostat and thermo-rea^ilator were charged with deiise automobileoil, which exhibits sufficient mobility at tempera-tures above 50 C to admit of uniform distributionof the temperature. The mean values of t
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
