| 释义 |
promoted, ppl. a.|prəʊˈməʊtɪd|
[f. promote v. + -ed1.]
That has been promoted; furthered, advanced.
1. Chem. Of a catalyst: containing or influenced by a promoter (sense 1 d).
[1920: see promote v. 2 c.] 1927Jrnl. Amer. Chem. Soc. XLVIII. 2821 In the case of pure iron and promoted iron catalysts for ammonia synthesis, oxygen is the type of poison which seemed best suited for such a study. 1968E. K. Rideal Concepts in Catalysis vi. 120 Promoted iron catalysts used in the ammonia synthesis are generally prepared by reduction in hydrogen at 500°C of a mixture 95% Fe3O4 plus 4–5% Al2O3 plus 0–1% K2O. 1975P. H. Emmett in Drauglis & Jaffee Physical Basis for Heterogeneous Catalysis 18 The carbon monoxide chemisorption indicates that about 50 percent of the singly promoted (Al2O3 the only promoter) catalyst is usually covered with promoter.
2. In other senses of the vb.
1962Listener 6 Dec. 975/3 A splendid, and splendidly promoted, mixture of Baedeker, gazetteer, and travellers' tales. 1977Cleethorpes News 6 May 31/1 Two fine individual performances destroyed promoted Cromwell-Drewery on their Premier debut. |