Surface　frustrated　Lewis　pairs　(SFLPs)　have　been　implicated　in　the　gas-phase　heterogeneous　(photo)catalytic　hydrogenation　of　CO2　to　CO　and　CH3OH　by　In2O3-x(OH)(y).　A　key　step　in　the　reaction　pathway　is　envisioned　to　be　the　heterolysis　of　H-2　on　a　proximal　Lewis　acid-Lewis　base　pair,　the　SFLP,　the　chemistry　of　which　is　described　as　In...In-OH　+　H-2　-＞　In-OH2+...In-H-.　The　product　of　the　heterolysis,　thought　to　be　a　protonated　hydroxide　Lewis　base　In-OH2+　and　a　hydride　coordinated　Lewis　acid　In-H-,　can　react　with　CO2　to　form　either　CO　or　CH3OH.　While　the　experimental　and　theoretical　evidence　is　compelling　for　heterolysis　of　H-2　on　the　SFLP,　all　conclusions　derive　from　indirect　proof,　and　direct　observation　remains　lacking.　Unexpectedly,　we　have　discovered　rhombohedral　In2O3-x(OH)(y)　can　enable　dissociation　of　H-2　at　room　temperature,　which　allows　its　direct　observation　by　several　analytical　techniques.　The　collected　analytical　results　lean　towards　the　heterolysis　rather　than　the　homolysis　reaction　pathway.