▎ 摘　　要

NOVELTY - Carbon monoxide adsorbent comprises element which further comprises sulfur and nickel which is supported on carbon-based support for selectively adsorbing carbon monoxide from multi-component gas which is provided with carbon monoxide. USE - Carbon monoxide adsorbent used for selectively adsorbing and producing high-purity gas (all claimed). ADVANTAGE - The carbon monoxide adsorbent helps in producing high-purity gas. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for manufacturing carbon monoxide adsorbent, which involves supporting sulfur on carbon-based support with sulfur precursor; drying support treated with sulfur precursor to obtain sulfur precursor supporting support; obtaining support on which sulfur, and nickel precursors are supported by supporting nickel precursor on support for supporting sulfur precursor; drying support on which sulfur, and nickel precursors are supported; and heating provided to obtained support to obtain adsorbent in which sulfur, and nickel are supported on carbon-based support; (2) a method for selectively adsorbing carbon monoxide, which involves providing adsorbent for adsorbing carbon monoxide from multi-component gas which is provided with carbon monoxide; and (3) a method for producing high-purity gas, which involves providing adsorbent by adsorbing, and removing carbon monoxide from gas which is provided with carbon monoxide to producing high-purity gas.