▎ 摘　　要

NOVELTY - A catalyst comprises silica and graphene, and molybdenum, manganese and nickel, and alkali metal and/or alkaline-earth metal. USE - Catalyst is used for preparing alcohol using coke-quenching waste gas (claimed). ADVANTAGE - The catalyst is free of sulfur, uses economical raw materials, and can be prepared industrially. Since waste treatment does not generate sulfur-containing waste gas, environmental pollution is prevented. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation of the catalyst, which preprocessing silica by expanding using hydrochloric acid-ammonium fluoride aqueous solution, mixing preprocessed silica with graphene and compound containing molybdenum, manganese and nickel, carrying out reactive grinding to obtain a mixture, impregnating the mixture with a solution containing alkali metal or alkaline earth metal by equal volume impregnation, drying, and calcining; and (2) preparation of alcohol, which involves contacting coke-quenching waste gas with the catalyst.