Aluminophosphate-metal oxide bonded body and production method for same

An aluminophosphate-metal oxide bonded body comprising a metal oxide having a bonding surface on a part of the surface thereof, and an aluminophosphate separation membrane bonded to the bonding surface of the metal oxide,

• wherein the metal oxide contains at least one material selected from the group consisting of alumina, titania and silica by 70% by mass or more in total,
• the metal oxide contains an alkali metal, an alkaline earth metal or both of these throughout the metal oxide, or a surface layer of the metal oxide whose surface is the bonding surface contains an alkali metal, an alkaline earth metal or both of these, and
• in a portion of the metal oxide from the bonding surface to a depth of 1 μm, a content rate of the alkali metal, alkaline earth metal or both is from 0.3% to 30.0% by mass with respect to all substances that are present in the portion of the metal oxide.