▎ 摘　　要

NOVELTY - Method for preparing ferric phosphate-oxomolybdenum(x)-graphene aerogel catalyst material is prepared by (i) dispersing iron salt and ammonium dihydrogen phosphate in water, stirring to obtain mixed solution, heating and stirring the mixed solution until powder is obtained and drying to obtain ferric phosphate, (ii) dispersing the graphene oxide in water, stirring to obtain graphene oxide aqueous solution, (iii) dissolving ferric phosphate powder in water and stirring to obtain ferric phosphate suspension, (iv) mixing the graphene oxide aqueous solution with the ferric phosphate suspension, and adding ammonium molybdate tetrahydrate, stirring, dispersing to obtain a mixed dispersion, (v) hydrothermally reacting to obtain ferric phosphate-oxomolybdenum(x)-graphene hydrogel, (vi) taking out from the furnace, aging and replacing the water and (vii) taking out the sample that is replaced by the solution and freeze-drying to obtain the catalyst material. USE - Method for preparing ferric phosphate-oxomolybdenum(x)-graphene aerogel catalyst material. ADVANTAGE - The method promotes the conversion of methane, has high porosity, large specific surface area, high electron mobility, catalytic active sites, and mesoporous material ferric phosphate nano aggregates, and has excellent catalytic performance. DETAILED DESCRIPTION - Method for preparing ferric phosphate-oxomolybdenum(x)-graphene aerogel catalyst material is prepared by (i) dispersing the iron salt and ammonium dihydrogen phosphate in deionized water during the stirring process, uniformly stirring to obtain a mixed solution, heating and stirring the mixed solution until a powder is obtained, and placing in an oven to dry to obtain ferric phosphate, (ii) uniformly dispersing the graphene oxide in deionized water during the stirring process and uniformly stirring to obtain graphene oxide aqueous solution, (iii) dissolving ferric phosphate powder in deionized water and stirring for a period of time to obtain ferric phosphate suspension, (iv) mixing the graphene oxide aqueous solution with the ferric phosphate suspension, and adding ammonium molybdate tetrahydrate, stirring for a period of time, and ultrasonically dispersing to obtain a mixed dispersion, (v) pouring the dispersion liquid in the step (iv) into the inner bladder of a hydrothermal reactor, and hydrothermally reacting to obtain ferric phosphate -oxomolybdenum(x)-graphene hydrogel, (vi) taking out the ferric phosphate-oxomolybdenum(x)-graphene hydrogel in the step (v) from the furnace, placing into deionized water for aging, and replacing the deionized water every time for solvent replacement and (vii) taking out the sample that is replaced by the solution in the step (vi) and freeze-drying to obtain the catalyst material, where the ferric phosphate-oxomolybdenum(x)-graphene aerogel catalyst material has a specific surface area of 22.4-368.3 g/cm3, in the temperature range of 200-650 degrees C, 70 ml/minute, methane/oxygen/helium is equal to 32/4.3/63.7 (volume Under the mixed flow rate of), the methane conversion rate can reach 3.26-4.85%, and the formaldehyde selectivity can reach 10.2-17.1%.