prov:value
| - Many specific catalysts which can be used in the practice of this invention are described in U.S. Pat. Nos. 3,297,484 and 3,369,886 and included metals, metal oxides, metal alloys and other metal compounds, including mixtures of the foregoing selected from the group consisting of metals in Groups IV-B, V-B, VI-B, VII-B, VIII, I-B, II-B, III-B, IV-A and V-A of the Periodic Table of the Elements.
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