| 摘要 |
petroleum chemistry. SUBSTANCE: hydrodealkylation of alkyl aromatic hydrocarbons is performed by means of catalyst of the following composition, mas.%: chromium oxide, 9.0-13.5; oxide of alkali metal, 0.25-4.7; boron oxide, 1.2-3.6; and aluminum oxide, the balance. Catalyst may additionally include 0.05-0.7 of promoter of catalytic active components - oxide of rare- earth metal. For modification of catalyst with oxide of alkali metal, borates of alkali metals from row Li, Na, K, Rb are used as structural modifier at Me:B atomic relationship equal to 1:1.9-2.1. EFFECT: reduced conversion of nonaromatic compounds and rate of coking of catalyst at increased conversion of alkyl aromatic compounds. 1 tbl, 8 ex |
