FIELD: chemistry.
SUBSTANCE: invention relates to method of obtaining oxalate by gas-phase method with participation of CO, which includes the following stages: c) gas flow V, which contains NO and methanol and oxygen, is supplied in supergravitation reactor II with rotary layer and is subjected to reaction of oxidative etherification with formation of flow VI, which contains methylnitrire; flow VII of methylnitrite, obtained by separation of said flow VI, together with gaseous CO flow II is supplied into reactor for combination II, where it contacts with catalyst II with obtaining flow VIII of dimethyloxalate and gas phase flow IX, which contains NO, with separation of obtained dimethyloxalate flow VIII with obtaining dimethyloxalate I; d) gas flow IX, which contains NO, is optionally returned in recycle to stage c) for mixing with gas phase flow V, which contains NO, before supply into supergravitation reactor II with rotary layer; with rotor of supergravitation reactor II with rotary layer being connected with porous layer of filler; catalyst represents catalyst, which contains palladium, Pd, in quantity 0.01-1% counted per pure substance relative to weight of catalyst supporter.
EFFECT: method of obtaining of oxalate by gas phase method including CO is mainly aimed at solution of technical problem of low efficiency of application of nitrogen oxides or nitrous acid ethers, characteristic of known methods.
10 cl, 14 ex
