Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1977-06-17
1982-11-16
Gantz, Delbert E.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252435, 252438, 2524253, 252472, 252447, 252464, 252456, 252455R, 252455Z, 429 40, 429 44, B01J 2714, B01J 2724, H01M 488, B01J 2340
Patent
active
043594069
ABSTRACT:
The instant invention relates to novel compositions comprising highly dispersed Group VIII metal-phosphorus compounds or Group VIII metal-arsenic compounds supported on a high surface area solid support selected from the group consisting of carbon, alumina, silica, silica-alumina, zeolite, kieselguhr, vermiculite, and the refractory oxides of Group IVb and Vb, transition metals, and mixtures thereof.
The instant invention further relates to a method for the preparation of the above compositions. In the preparation of the supported Group VIII metal-phosphorus compounds, the support is impregnated with both a phosphorus source, e.g. elemental phosphorus or a water soluble phosphorus salt, and a Group VIII metal source. The Group VIII metal source is impregnated onto the support from a solution of a water soluble Group VIII metal salt. Reduction of the resultant impregnated composition at temperatures above about 200.degree. C. results in the formation of highly dispersed, supported Group VIII metal-phosphorus compounds. The preparation of the highly dispersed supported Group VIII metal-arsenic compounds is accomplished in a similar manner. The Group VIII metal loading of these compositions range from about 0.1% to about 30 wt. % of the total catalyst. The phosphorus to Group VIII metal atomic ratio or the arsenic to Group VIII metal atomic ratio ranges from 0.3 to 3.0.
The highly dispersed supported Group VIII metal-phosphorus compounds or Group VIII metal-arsenic compounds may be used to form highly dispersed, supported Group VIII metal catalysts after low temperature air calcination or decomposition in water at room temperature.
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Corcoran Edward M.
Exxon Research and Engineering Co.
Forzano Ernest A.
Gantz Delbert E.
Wright William G.
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