Understanding　the　relationship　of　competitive　adsorption　between　reactants　is　the　prerequisite　for　high　activity　and　selectivity　in　heterogeneous　catalysis,　especially　the　difference　between　the　adsorption　energies　(E-ads)　of　two　reactive　intermediates　in　Langmuir-Hinshelwood　(L-H)　models.　Using　oxidative　dehydrogenation　of　hydrogen　sulfide　(H2S-ODH)　as　a　probe,　we　develop　various　metal　single　atoms　on　nitrogen-doped　carbon　(M-NDC)　catalysts　for　controlling　E-ads-H2S,　E-ads-O-2　and　investigating　the　difference　in　activity　and　selectivity.　Combining　theoretical　and　experimental　results,　a　Sabatier　relationship　between　the　catalytic　performance　and　E-ads-O-2/E-ads-H2S　emerges.　Mn-NDC　as　the　optimal　catalyst　shows　excellent　H2S　conversion　(＞90　%)　and　sulfur　selectivity　(＞90　%)　in　a　wide　range　of　O-2　concentrations　over　100　h.　Such　a　high-efficiency　performance　is　attributed　to　appropriate　E-ads-H2S　and　E-ads-O-2　on　Mn-N-4　sites,　boosting　redox　cycle　between　Mn2+　and　Mn3+,　as　well　as　preferential　formation　of　sulfur.　This　work　provides　a　fundamental　guidance　for　designing　Sabatier　optimal　catalysts　in　L-H　models.