Selective oxidation of glucose on bismuth-promoted Pd-Pt/C catalysts prepared from NOct4Cl-stabilized Pd-Pt colloids
| Autor: | Walter Vogel, A. Schulze Tilling, Helmut Bönnemann, Bernd Tesche, T. Schilling, Klaus Seevogel, Werner Brijoux, R. Franke, G. Köhl, Josef Hormes, J. Pollmann, J. Rothe, Rainer Brinkmann |
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| Rok vydání: | 1998 |
| Předmět: |
Inorganic chemistry
chemistry.chemical_element Catalysis Bismuth Inorganic Chemistry Colloid chemistry.chemical_compound X-ray photoelectron spectroscopy chemistry Transmission electron microscopy Materials Chemistry Gluconic acid Physical and Theoretical Chemistry Absorption (chemistry) Selectivity |
| Zdroj: | Inorganica Chimica Acta. 270:95-110 |
| ISSN: | 0020-1693 |
| DOI: | 10.1016/s0020-1693(97)05830-1 |
| Popis: | Charcoal-supported Pd-Pt catalysts based on Pd-Pt/NOct4Cl colloidal alloys have superior activity and selectivity in the oxidation of glucose to gluconic acid compared with industrial heterogeneous Pd-Pt catalysts. According to transmission electron microscopy, X-ray diffraction/Debye function analysis, X-ray photoelectron spectroscopy, X-ray absorption near edge structure, and extended X-ray absorption fine structure analysis the chemical coreduction of PdCl2 and PtCl2 in the appropriate ratio with NOct4BEt3H yielded the alloyed Pd-Pt colloids in organic solvents. They are screened by the lipophilic NOct4Cl surfactant layer from coagulation and poisoning. TEM showed colloids of particle sizes in the range from 1.5 to 3 nm. |
| Databáze: | OpenAIRE |
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