A kind of eu-p-w composite catalyst and its preparation method and application
A composite catalyst, eu-p-w technology, used in chemical instruments and methods, preparation of organic compounds, catalysts for physical/chemical processes, etc., can solve problems such as strict equipment requirements, increased production costs, environmental pollution, etc. The effect of high value, high feasibility and wide adaptability
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Embodiment 1
[0035] (1) Eu-P-W catalyst prepared from raw materials with Eu:P:W molar ratio of 2:0.5:1:
[0036] Weigh 2.8801 g of phosphotungstic acid, add 30 mL of deionized water to dissolve, then weigh 0.8921 g of europium nitrate hexahydrate, add it to the dissolved tungsten salt solution to obtain a solution of europium tungsten salt, put it on a stirrer and stir evenly, weigh Take 0.0660 g of diammonium hydrogen phosphate, add 15 mL of deionized water to dissolve, drop the diammonium hydrogen phosphate solution into the europium tungsten salt solution dropwise, stir for 2 hours until the mixed solution is in a homogeneous state, and transfer the mixed solution into polytetrafluoroethylene for hydrothermal reaction In the kettle, the reaction was carried out at 180°C for 24h. After the reaction, the precipitate was washed twice with deionized water and anhydrous ethanol, dried at 70 °C for 12 h in a blast drying oven, calcined in a crucible at 600 °C for 4 h, and finally cooled to room...
Embodiment 2
[0041] (1) Preparation of raw material Eu-P-W catalyst whose molar ratio is Eu:P:W=2:1:1:
[0042] Weigh 2.8801 g of phosphotungstic acid, add 30 mL of deionized water to dissolve, then weigh 0.8921 g of europium salt hexahydrate europium nitrate, add it to the dissolved tungsten salt solution to obtain a solution of europium tungsten salt, put it on a stirrer and stir evenly , weigh 0.1321 g of diammonium hydrogen phosphate, add 15 mL of deionized water to dissolve, drop the diammonium hydrogen phosphate solution into the europium tungsten salt solution dropwise, stir for 2h until the mixed solution is in a homogeneous state, and move the mixed solution into PTFE water In a thermal reactor, the reaction was carried out at 180 °C for 24 h. After the reaction, the precipitate was washed twice with deionized water and anhydrous ethanol, dried at 70 °C for 12 h in a blast drying oven, calcined in a crucible at 600 °C for 4 h, and finally cooled to room temperature and taken out, ...
Embodiment 3
[0047] (1) Preparation of raw material Eu-P-W catalyst whose molar ratio is Eu:P:W=2:2:1:
[0048] Weigh 2.8801 g of phosphotungstic acid, add 30 mL of deionized water to dissolve, then weigh 0.8921 g of europium nitrate hexahydrate, add it to the dissolved tungsten salt solution to obtain a solution of europium tungsten salt, put it on a stirrer and stir evenly, weigh Take 0.2641 g of diammonium hydrogen phosphate, add 15 mL of deionized water to dissolve, drop the diammonium hydrogen phosphate solution into the europium tungsten salt solution dropwise, stir for 2 hours until the mixed solution is in a homogeneous state, and transfer the mixed solution into polytetrafluoroethylene for hydrothermal reaction In the kettle, the reaction was carried out at 180°C for 24h. After the reaction, the precipitate was washed twice with deionized water and anhydrous ethanol, dried at 70 °C for 12 h in a blast drying oven, calcined in a crucible at 600 °C for 4 h, and finally cooled to roo...
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