NOVELTY - A monolithic mass and energy transfer cell (comprising a monolithic ionically conductive core (20)) is heated to 25-1000 degreesC. Current from an external circuit is introduced into the cathode of the cell. An oxidant and a fuel are introduced into the first and second passages (30,40) of the cell respectively. Chemical products and electrical current are recovered subsequently from the cell.    USE - For producing chemical products and cogenerating electrical energy.    ADVANTAGE - The cell is operable at lower temperatures than the conventional chemical co-generation processes and is free of thermal mismatch. The monolithic cell does not require any bonding or cement material between the first and second passages. The monolith is fabricated as a single unit using one-step fabrication. The monolithic ionically conductive core can be designed in a specific shape such as cubical and cylindrical shapes, depending on the final use.    DETAILED DESCRIPTION - A chemical co-generation process uses a monolithic mass and energy transfer cell which comprises a monolithic ionically conductive core (20). The outer surface of the core comprises a first set of passages (30) and a second set of passages (40). Both the first and second set of passages are positioned between their respective entrance surfaces and exit surfaces. The entrance and exit surfaces are spaced apart from each other. The second set of passages are aligned in a non- parallel manner to the first set of passages. The first and second set of passages, have disposed within them a cathode and an anode, and a cathode respectively. Both the anode and cathode comprise a porous electrically conductive coating. Electrically conductive materials (55,60) are disposed within the first and second passages respectively. An external circuit is in electrical contact with the core. The monolithic mass and energy transfer cell is heated to 25-1000 degreesC and current from the external circuit is introduced into the cathode. An oxidant and fuel are introduced into the first and second passages respectively. Chemical products are recovered from the cell and electric current is recovered through the external circuit at the anode. An INDEPENDENT CLAIM is also included for the chemical co- generation cell.    DESCRIPTION OF DRAWING(S) - The figure shows a perspective view with a cutaway section showing the interior alternating rows of the monolithic ionically conductive core.    Monolithic ionically conductive core; (25) First entrance surface; (30) First set of passages; (35)Second entrance surface; (40) Second set of passages; (55,60) Electrically conductive material (20)