A zr-ce-o dual-function catalytic adsorbent and its preparation method and its application in fuel desulfurization
A dual-function catalyst and adsorbent technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of high energy consumption and large consumption of hydrogen in hydrodesulfurization , low adsorption selectivity and other issues, to achieve the effects of low cost, low energy consumption and simple process
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Embodiment 1
[0032] (1) Preparation of Zr-Ce-O dual-functional catalytic adsorbent: prepare 5wt% aqueous urea solution, mix 1M cerium ammonium nitrate urea aqueous solution and 1M zirconium oxynitrate aqueous solution with ZrO 2 / CeO 2 The molar ratio is 1 / 9, and the magnetic stirring is used to mix evenly; the obtained solution is heated in a water bath at a heating rate of 1°C / min to 85°C, and then stirred at a constant temperature for 8 hours, and then cooled to obtain a gel; the gel is filtered and washed with water; Dry in an oven; calcined at 400°C in an air atmosphere to prepare a Zr-Ce-O dual-functional catalytic adsorbent.
[0033] (2) Catalytic oxidation reaction and adsorption desulfurization at room temperature: at room temperature, the Zr-Ce-O dual-functional catalytic adsorbent and fuel oil containing organic sulfur are placed in the reaction adsorber at a ratio of agent to oil (weight ratio) of 1 / 10 Mixing; pass air at a flow rate of 5ml / min into the mixed solution of Zr-Ce...
Embodiment 2
[0035] (1) Preparation of Zr-Ce-O bifunctional catalytic adsorbent: prepare 7.5wt% urea aqueous solution, and 2M cerium ammonium nitrate urea aqueous solution and 2M zirconium oxynitrate aqueous solution by ZrO 2 / CeO 2 The molar ratio is 5 / 5, and the magnetic stirring is evenly mixed; the obtained solution is heated in a water bath at a heating rate of 2.5°C / min to 90°C, and then stirred at a constant temperature for 6 hours, and cooled to obtain a gel; the gel is filtered and washed with water; Dry in an oven; calcined at 500°C in an air atmosphere to prepare a Zr-Ce-O dual-functional catalytic adsorbent.
[0036] (2) Catalytic oxidation reaction and adsorption desulfurization at room temperature: at room temperature, the Zr-Ce-O dual-functional catalytic adsorbent and fuel oil containing organic sulfur are placed in the reaction adsorber at a ratio of agent to oil (weight ratio) of 1 / 20 Mixing; pass air at a flow rate of 10ml / min into the mixed solution of Zr-Ce-O dual-fun...
Embodiment 3
[0038] (1) Preparation of Zr-Ce-O bifunctional catalytic adsorbent: prepare 7.5wt% aqueous urea solution, mix 3M cerium ammonium nitrate urea aqueous solution and 3M zirconium oxynitrate aqueous solution with ZrO 2 / CeO 2The molar ratio is 7 / 3, and the magnetic stirring is evenly mixed; the obtained solution is heated in a water bath at a heating rate of 2.5°C / min to 90°C, and then stirred at a constant temperature for 4 hours, and cooled to obtain a gel; the gel is filtered and washed with water; Dry in an oven; calcined at 500°C in an air atmosphere to prepare a Zr-Ce-O dual-functional catalytic adsorbent.
[0039] (2) Catalytic oxidation reaction and adsorption desulfurization at room temperature: at room temperature, the Zr-Ce-O dual-functional catalytic adsorbent and fuel oil containing organic sulfur are placed in the reaction adsorber at a ratio of agent to oil (weight ratio) of 1 / 40 Mixing; pass air at a flow rate of 15ml / min into the mixed solution of Zr-Ce-O dual-fu...
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