Nano-catalyst for hydrogenation of C5 or C9 petroleum resin and hydrogenation decolorization method
A technology of petroleum resin and catalyst, which is applied in the field of hydrogenation of C5 or C9 petroleum resin, which can solve the problems such as poor control of aluminum balance, achieve the effects of reduced economic cost, simple operation of production process, and reduced energy consumption
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Embodiment 1
[0035] Weigh 8.0g nickel nitrate, 1.25g aluminum nitrate and 0.95g magnesium nitrate, dissolve in 30mL deionized water to obtain solution A; weigh 20g urea in a two-necked flask, add 20mL deionized water, stir at room temperature to make urea After dissolving, put the urea solution into a water bath at 80° C., and add 1.2 g of SiO2 dropwise under continuous stirring to obtain solution B. Then, the mixed solution of nickel nitrate and aluminum nitrate was added dropwise to the mixed solution of urea / silica sol, and stirred and refluxed at 80° C. for 10 hours. After natural cooling of the system, suction filtration, washing and drying, it was calcined in a muffle furnace at 500°C for 3 hours to obtain the nickel composite catalyst A. The X-ray diffraction results are shown in the attached figure 1 , it can be seen from the figure that the nickel is highly dispersed and the particles are small.
Embodiment 2
[0037] Take by weighing 7.1g nickel nitrate, 2.5g aluminum nitrate, 0.82g manganese nitrate and 0.23g zinc nitrate, be dissolved in 30mL deionized water, other steps are with embodiment 1, and gained catalyst is nickel composite catalyst B. The X-ray diffraction results are shown in the attached figure 2 , it can be seen from the figure that the nickel particles in the nickel composite catalyst B are highly dispersed on the surface of silica, and no large aggregation is formed.
Embodiment 3
[0039] Put 1.0 gram of C9 petroleum resin in a high-pressure reactor with a volume of 100 milliliters, 20 milliliters of solvent A, after 0.1 gram of activation (the nickel composite catalyst is pre-reduced at a temperature of 300-500° C. for 1 to 4 hours in normal pressure hydrogen) Nickel composite catalyst A, airtight and replaced with air, then filled with 2.0MPa hydrogen, the hydrogen purity is 99.9%, put it into the high-pressure reactor heating mantle and slowly heat to 250°C, adjust the hydrogen valve to make the system pressure reach 5.0MPa, and then keep After 6 hours, C9 petroleum resin improved to light yellow and close to water white, see attached image 3 .
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Abstract
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