Showing papers in "Journal of Catalysis in 1970"

TL;DR: The chemisorption of H2 and of O2 on Pt particles, supported on alumina, was studied in this article, where the particle size distributions from the micrographs were consistent with the 1:1 = H Pt stoichiometry, however, even at high dispersions where H Pt (total) was near unity, the error introduced probably cannot exceed 16.7%.

TL;DR: In this article, the adsorption of water, ethanol, ammonia, and piperidine on the oxidized iron zeolite is discussed in terms of the proposed model.

TL;DR: In this article, the photoelectric emission of these films was investigated and it was found that equilibrated alloys of compositions within the miscibility gap of the PtAu phase diagram possessed identical work functions.

TL;DR: In this article, the authors measured the hydrogenolysis rate of neopentane on supported metal catalysts containing Ru, Rh, Pd, Os, Ir, Pt, and Au.

TL;DR: In this article, the catalytic effect of palladium on the synthesis of vinyl acetate from ethylene has been studied, and it was shown that co-catalysts such as potassium or other alkali metals promote the abstraction of hydrogen from acetic acid and weaken palladium-oxygen bonds in dissociatively adsorbed acetic acids.

TL;DR: In this paper, the authors investigated the chemisorption of hydrogen on a platinum black catalyst over a wide range of temperature (−196 to 400 °) by the temperature programmed desorption (TPD) technique.

TL;DR: In this article, the catalytic activity and properties peculiar to zeolite Y in various cationic and decationized forms during the alkylation reaction of toluene with methanol were investigated.

TL;DR: In this paper, the authors investigated the effect of the temperature of reduction and decomposition of the Au salt upon the particle size of the metal in the supported catalyst and pointed out the implications of these findings for separate control of the degree of dispersion and of the support coverage by the metal.

TL;DR: In this article, the authors measured the adsorption isotherms and rates for NO chemisorption on supported and unsupported samples of Fe 2 O 3 and Fe 3 O 4 in the 26-150 °C temperature range.

TL;DR: In this paper, the effects of certain gaseous additives on the oxidation of methane over palladium catalysts have been studied and it has been shown that, whereas higher alkanes and partial oxidation products of methane simply retard overall oxidation of the hydrocarbon, certain organic halogen compounds not only reduce the rate of oxidation of Methane but also result in the production of isolatable quantities of formaldehyde in high selectivity.

TL;DR: In this article, a correlation between lattice parameter and the rate of reaction at a given temperature for each crystal structure was found for the rare-earth series, but this correlation was weaker than that found in the rare earth series.

TL;DR: In this paper, the catalytic properties of C2H4 and C3H6 were investigated over silica-supported Pt, Pd, Ir, Ru, Ru and Rh.

TL;DR: In this article, the primary kinetic isotope effects of the dehydration from the gas phase of tertiary, secondary and iso-butanol on alumina have been measured in a temperature range between 120 and 230 °C.

TL;DR: In this paper, the reaction mechanism of hydrogenolysis on nickel catalysts with that on platinum catalysts was compared by means of a pulse technique, using hydrogen as carrier gas for a gas Chromatographic microreactor.

TL;DR: The shape selectivity of alkylbenzene disproportionation is not affected by thermal deactivation of the mordenite as mentioned in this paper, which is a special case of shape-selective kinetic control, in which the thermodynamically most favored isomer is not formed.

TL;DR: In this paper, the slow stages of the catalytic reduction of WO3 to hydrogen tungsten bronzes HxWO3 were studied by NMR spectroscopy between −50 and −195 °C.

TL;DR: In this paper, a study of the isomerization and dehydrocyclization reactions of hexanes in the presence of inert-alumina-supported platinum catalysts was conducted.

TL;DR: In this article, a detailed study of the catalytic disproportionation of CO over Fe and 3.5% Si-Fe single crystals in the range 550-800 °C has been made.

TL;DR: In this paper, the adsorption of hydrogen and oxygen, as well as the reaction of hydrogen with adsorbed oxygen, was studied gravimetrically and volumetrically on platinum black.

TL;DR: The role of proton originally held by the catalyst NiOSiO2 in the dimerization of ethylene was investigated by means of the deuterium tracer, taking the subsequent isomerization of butene into consideration as discussed by the authors.

TL;DR: In this paper, the catalytic activity of hydrogen chloride on alumina and silica was studied by infrared technique, and it was found that chemisorption of HCl on dry alumina produced new hydrogen bonded OH groups on the surface.

TL;DR: In this article, a method of determining the specific copper surface area by chromatographic technique has been suggested and experimentally checked, and the value of surface coverage θ = 0.35 agrees well with the experimental values determined by this method and proves that the decomposition of N 2 O at room temperature is adequate for determining the exact surface area.

TL;DR: In this article, the influence of the calcination temperature and the degree of cation exchange of NH4-Y, and the addition of hydrogen chloride to Mn-Y zeolite, in relation to the selectivity of p-xylene formation, was studied for the alkylation reaction of toluene with methanol.

TL;DR: In this paper, the authors described the catalysts for the oxidation of various olefins and some related hydrocarbons over Co3O4MoO3 and SnO2 MoO3 (Co or Sn:Mo = 9:1).

TL;DR: In this article, the rate of the formose condensation reaction at intermediate conversion levels at 60 °C is expressed as moles of HCHO converted/min/liter of reaction volume, 3.15 × Ca(OH) 2 molarity.

TL;DR: Sulfiding and reducing hexavalent Mo in the oxide form on an Al 2 O 3 support produce pentavalent and tetravalent Mo, the former as oxide and the latter in the form of sulfide as mentioned in this paper.

TL;DR: In this article, the rate of oxidation of o -xylene was studied in a differential bed reactor over the following ranges of conditions: 290 to 310 °C, (0.5 to 3.0) × 10 −4 g-mole o-xylene/l, (5 to 100)× 10 − 4 gmole oxygen/l. But no evidence was found to support the second order model proposed by Ioffe and Lyubarskii.