Abstract
The interaction of formic‐d acid (DCOOH) with clean and partially oxidized 76%Ni/24%Fe‐(100) surfaces was examied by temperature‐programmed reaction spectroscopy (TPRS) and Auger electron spectroscopy (AES) at temperatures between 125 K and 800 K. The flash decomposition of adsorbed DCOOH on clean Ni/Fe(100) indicated that the major surface intermediate was DCOO, which decomposed at 410 K to D2, CO2, CO, and surface oxygen. The presence of surface oxygen during subsequent formic acid adsorption at 125 K increased the decomposition rate. The increase in the water formation with oxygen coverage suggested that the surface oxygen atoms selectively remove the acidic hydrogen to enhance production of the formate.
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