▎ 摘　　要

NOVELTY - A nitrogen reduction catalyst is a graphitic frustrated Lewis acid-base pair catalyst comprising carbon nanomaterials and Lewis acid-base components arranged in pairs in the carbon nanomaterials. The nitrogen reduction catalyst is capable of reducing nitrogen to ammonia through an exothermic reaction, while securing several active sites by forming a covalent bond between nitrogen and the Lewis acid and the base, respectively. USE - Catalyst is used in system for reducing nitrogen into ammonia and battery system for reducing carbon dioxide in seawater into ethanol and propanol (all claimed). Ammonia is used for producing urea fertilizer and pharmaceuticals, and as carrier of hydrogen ions used as transportation fuel. ADVANTAGE - The high-performance nitrogen reduction catalyst has excellent durability and high ammonia conversion efficiency, and is economical. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) nitrogen reduction system, which consists of a cathode comprising the carbon nanomaterials, in which the Lewis acid-base components are paired with each other and introduced into the molecules, an anode made of a metal, and an electrolyte containing dissolved nitrogen capable of reacting with Lewis acid-base components of carbon nanomaterials; (2) seawater carbon dioxide-reducing battery system, which consists of the cathode, the anode, and seawater electrolytes. The carbon dioxide dissolved in the seawater electrolytes reacts with the Lewis acid-base components of the carbon nanomaterial for reducing oxygen of the carbon dioxide through an exothermic reaction, while securing several active sites by forming a covalent bond between carbon and the Lewis acid and the base, respectively; and (3) carbon dioxide reduction catalyst, which comprises graphene and Lewis acid-base components arranged in pairs in the graphene.