(DE19725008-C1)      A method of operating a methanol reforming plant which includes a reactor containing a reforming catalyst involves the interruption of the operation at a predetermined point in time in order to reactivate the catalyst by treatment with hydrogen or a hydrogen rich gas mixture.    USE -   In methanol reforming to produce hydrogen for a vehicle fuel cell.    ADVANTAGE -   The plant can be operated at relatively lower cost over longer operational periods without significantly lowering conversion yields.    (JP11106205-A)      A method of operating a methanol reforming plant which includes a reactor containing a reforming catalyst involves the interruption of the operation at a predetermined point in time in order to reactivate the catalyst by treatment with hydrogen or a hydrogen rich gas mixture.    USE -   In methanol reforming to produce hydrogen for a vehicle fuel cell.    ADVANTAGE -   The plant can be operated at relatively lower cost over longer operational periods without significantly lowering conversion yields.    (JP3044655-B2)      A method of operating a methanol reforming plant which includes a reactor containing a reforming catalyst involves the interruption of the operation at a predetermined point in time in order to reactivate the catalyst by treatment with hydrogen or a hydrogen rich gas mixture.    USE -   In methanol reforming to produce hydrogen for a vehicle fuel cell.    ADVANTAGE -   The plant can be operated at relatively lower cost over longer operational periods without significantly lowering conversion yields.    (US6074770-A)      A method of operating a methanol reforming plant which includes a reactor containing a reforming catalyst involves the interruption of the operation at a predetermined point in time in order to reactivate the catalyst by treatment with hydrogen or a hydrogen rich gas mixture.    USE -   In methanol reforming to produce hydrogen for a vehicle fuel cell.    ADVANTAGE -   The plant can be operated at relatively lower cost over longer operational periods without significantly lowering conversion yields.