PROCESS FOR THE PREPARATION OF A GLYOXYLIC ACID ESTER

    公开(公告)号:CA1249840A

    公开(公告)日:1989-02-07

    申请号:CA471852

    申请日:1985-01-10

    Applicant: HOECHST AG

    Abstract: of the disclosure The invention relates to a process for the preparation of a glyoxylic acid ester by oxydehydrogenation of the corresponding glycolic acid ester in the gas phase over a supported catalyst in a tubular reactor. The catalyst support consists of at least one cylindrical monolith which essentially has the same diameter as the reactor tube and contains channels with a diameter of 1 to 10 mm leading from the inlet to the outlet of the reactor tube. 60 to 90% of the monolith volume is formed by hollow spaces.

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