NOVELTY - Producing a first product from a first region of an electrochemical cell having a cathode and a second product from a second region of the cell having an anode, comprises contacting (510) the first region with a catholyte comprising carbon dioxide, contacting (520) the second region with an anolyte comprising a sulfur-based reactant, applying (530) an electrical potential between anode and cathode to produce products recoverable from regions, and removing (540) the second product and an unreacted sulfur-based reactant from the second region.    USE - The process is useful for producing a first product from a first region of an electrochemical cell having a cathode and a second product from a second region of the cell having an anode, where the first product includes carbon monoxide, formic acid, formaldehyde, methanol, oxalate, oxalic acid, glyoxylic acid, glycolic acid, glyoxal, glycolaldehyde, ethylene glycol, acetic acid, acetaldehyde, ethanol, ethylene, ethane, lactic acid, propanoic acid, acetone, isopropanol, 1-propanol, 1,2-propylene glycol, propylene, propane, 1-butanol, 2-butanol, butane, butene, butadiene, a carboxylic acid, a carboxylate, a ketone, an aldehyde, and an alcohol, and the second product includes sulfur trioxide, sulfuric acid, alkali metal sulfites, alkali metal thiosulfates, or alkali metal polysufides, and nitric acid (all claimed).    ADVANTAGE - The process is capable of energy-efficiently preparing the first and second products from the first and second regions of the electrochemical cell with high selectivity and without the emissions of carbon dioxide.    DETAILED DESCRIPTION - Producing a first product from a first region of an electrochemical cell having a cathode and a second product from a second region of the electrochemical cell having an anode, comprises contacting (510) the first region with a catholyte comprising carbon dioxide, contacting (520) the second region with an anolyte comprising a sulfur-based reactant, applying (530) an electrical potential between the anode and the cathode sufficient to produce a first product recoverable from the first region and a second product recoverable from the second region, removing (540) the second product and an unreacted sulfur-based reactant from the second region, and recycling (550) the unreacted sulfur-based reactant to the second region. An INDEPENDENT CLAIM is included for a system for electrochemical co-production of products, comprising an electrochemical cell including a first region, a cathode associated with the first region, a second region, an anode associated with the second region and a separator for selectively controlling a flow of ions between the first region and the second region, a carbon dioxide source in flow communication with the first region to supply carbon dioxide to the first region, a sulfur-based reactant source in flow communication with the second region to supply a sulfur-based reactant to the second region, and an energy source for applying a current across the anode and the cathode, where, when current is applied, the first product is recoverable from the first region and the second product is recoverable from the second region.    DESCRIPTION OF DRAWING(S) - The diagram shows a flow chart of a process of electrochemical co-production of products.    Contacting the first region with a catholyte comprising carbon dioxide (510)    Contacting the second region with an anolyte comprising a sulfur based reactant (520)    Applying an electrical potential between the anode and the cathode to produce a first product recoverable from the first region and a second product recoverable from the second region (530)    Removing the second product and an unreacted sulfur based reactant from the second region (540)    Recycling the unreacted sulfur based reactant to the second region. (550)