Bimetallic Catalysts: Discoveries, Concepts, and ApplicationsPresents an account of the research on bimetallic catalysts. Focuses attention on the possibility of influencing the selectivity of chemical transformations on metal surfaces and preparing metal alloys in a highly dispersed state. Covers the validation and elucidation of the bimetallic cluster concept. Includes figures and tables. |
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Results 1-3 of 16
Page 105
... distance R in Eqs . 4.14 and 4.17 will not in general be equivalent . The determination of interatomic distances and other parameters involves fitting of the expression for x , + ( K ) in Eq . 4.13 , utilizing Eqs . 4.16 and 4.17 for ...
... distance R in Eqs . 4.14 and 4.17 will not in general be equivalent . The determination of interatomic distances and other parameters involves fitting of the expression for x , + ( K ) in Eq . 4.13 , utilizing Eqs . 4.16 and 4.17 for ...
Page 107
... distances differ by only 0.008 Å , so that either distance differs from the av- erage by only 0.004 Å . This difference is in the range of our estimated un- certainty . If the difference between the values of 2.748 and 2.756 Å for R1 ...
... distances differ by only 0.008 Å , so that either distance differs from the av- erage by only 0.004 Å . This difference is in the range of our estimated un- certainty . If the difference between the values of 2.748 and 2.756 Å for R1 ...
Page 109
... distance is significantly different from the in- teratomic distance of 2.774 Å for the platinum clusters in a Pt / SiO2 reference catalyst , but the 2.712 - Å distance is indistinguishable from the distance deter- mined for the iridium ...
... distance is significantly different from the in- teratomic distance of 2.774 Å for the platinum clusters in a Pt / SiO2 reference catalyst , but the 2.712 - Å distance is indistinguishable from the distance deter- mined for the iridium ...
Common terms and phrases
absorber atom absorption edge absorption fine structure Academic Press adsorbed alkanes alloys alumina aromatic hydrocarbons atomic ratio atoms benzene bimetallic catalysts bimetallic clusters bulk calcined carbon monoxide cata Catal catalyst containing catalytic activity catalytic reforming Chem components composition coordination shell copper copper atoms copper EXAFS corresponding crystallites CuOs cycloalkanes cyclohexane decreases dehydrogenation electron energy EXAFS data fitting error Group IB metal Group VIII metal H₂ highly dispersed hydrogen chemisorption hydrogen partial pressure interatomic distance isomerization isotherm lower lysts methylcyclopentane Mössbauer Mössbauer effect n-heptane naphtha nearest neighbor nickel nickel-copper alloys obtained OsCu osmium osmium and copper osmium-copper catalyst parameters partial pressure permission from Academic phase shift functions Phys platinum and iridium platinum-iridium catalyst platinum-rhenium catalyst reactions reference catalyst Reprinted with permission rhenium room temperature ruthenium-copper aggregates ruthenium-copper catalyst sample shown in Figure silica silica-supported Sinfelt space velocity spectroscopy studies surface atoms tion values X-ray diffraction yields