38 research outputs found
Study of fuel cells using storable rocket propellants Final report, 18 Aug. 1965 - 23 Jun. 1969
Operating fuel cells on gaseous nitrogen tetroxide and aerozine 5
Study of fuel cells using storable rocket propellants quarterly report no. 1, 18 feb. - 17 may 1965
Storable rocket propellant fuel cells - nitrogen tetraoxide and unsymmetrical dimethyl hydrazine decompositio
Low-temperature gas from marine shales: wet gas to dry gas over experimental time
Marine shales exhibit unusual behavior at low temperatures under anoxic gas flow. They generate catalytic gas 300° below thermal cracking temperatures, discontinuously in aperiodic episodes, and lose these properties on exposure to trace amounts of oxygen. Here we report a surprising reversal in hydrocarbon generation. Heavy hydrocarbons are formed before light hydrocarbons resulting in wet gas at the onset of generation grading to dryer gas over time. The effect is moderate under gas flow and substantial in closed reactions. In sequential closed reactions at 100°C, gas from a Cretaceous Mowry shale progresses from predominately heavy hydrocarbons (66% C5, 2% C1) to predominantly light hydrocarbons (56% C1, 8% C5), the opposite of that expected from desorption of preexisting hydrocarbons. Differences in catalyst substrate composition explain these dynamics. Gas flow should carry heavier hydrocarbons to catalytic sites, in contrast to static conditions where catalytic sites are limited to in-place hydrocarbons. In-place hydrocarbons and their products should become lighter with conversion thus generating lighter hydrocarbon over time, consistent with our experimental results
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From Abstract: "Activity coefficients of calcium sulfate were calculated from solubilities of gypsum in 0 to 1.0m sodium chloride at temperatures from 25 degrees C to 95 degrees C. X-ray diffraction studies for calcium sulfate modifications before and after contact with aqueous and saline solutions are given.