▎ 摘　　要

NOVELTY - Preparing graphene composite nano lanthanum oxide stable disperse system involves adding the graphene oxide ammonia-anhydrous ethanol mixed solution in ultrasonic for 0.5 to 2 hours, taking upper mixed solution, dissolving lanthanum chloride in de-ionized water to prepare 0.01-0.05 moles/L lanthanum chloride aqueous solution. The upper layer mixed solution is mixed with lanthanum chloride solution and stirred at 40-65 degrees C for 1-2 hours. The reaction system added in oil system, and stirred at 75-120 degrees C to obtain graphene composite nano lanthanum oxide oil stable disperse system. USE - Method for preparing graphene composite nano lanthanum oxide stable disperse system for conductive material, heat conducting material, adsorbent, preservative and lubricant additive field . ADVANTAGE - The method enables to prepare graphene composite nano lanthanum oxide stable disperse system in simple, eco-friendly manner which has excellent dispersion stability.