A kind of supported nickel-based catalyst and its preparation method and application
A nickel-based catalyst and supported technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of high cost of noble metal catalysts and achieve good application prospects , easy industrialization, and simple preparation process
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[0050] On the other hand, the embodiment of the present invention also provides a preparation method of the supported nickel-based catalyst, comprising the following steps:
[0051] Step S1, providing a nickel-containing precursor, a zinc-containing precursor, a magnesium-containing precursor, a composite carrier, an alkaline soluble matter and deionized water, and the nickel-containing precursor, the zinc-containing precursor and the The magnesium precursor is mixed and dissolved in the deionized water to form a precursor solution, and the alkaline soluble matter is dissolved in the deionized water to form an alkaline aqueous solution;
[0052] Step S2, mixing the precursor solution, the alkaline aqueous solution and the composite carrier and performing a co-precipitation reaction to form a slurry;
[0053] Step S3, filtering the slurry to obtain a filter cake, and then sequentially washing, drying and pulverizing the filter cake to obtain a first catalyst powder;
[0054] S...
Embodiment 1
[0061] This embodiment provides a supported nickel-based catalyst, the composition of the supported nickel-based catalyst is 60Ni-1Zn-1Mg / 30SiO 2 -8TiO 2 , the supported nickel-based catalyst described in this embodiment is prepared by the following method, the method comprising: accurately weighing 113.6g of Na 2 CO 3 Place in a 5L three-necked flask, add 1.2L deionized water and heat to dissolve, accurately weigh 30.0g of silicon dioxide and 8.0g of titanium dioxide and add them to the three-necked flask for heating and stirring to obtain a mixture of silicon dioxide, titanium dioxide and Na 2 CO 3 For the mixed slurry composed of the solution, when the temperature rises to 50°C, the pre-prepared aqueous solution containing active components nickel, zinc and magnesium is added dropwise to the above mixed slurry within 0.5h to carry out the precipitation reaction.
[0062] After the mother liquor was removed by filtration, it was washed with deionized water at about 60° C....
Embodiment 2
[0067] This embodiment provides a supported nickel-based catalyst, the composition of the supported nickel-based catalyst is 60Ni-1Zn-1Mg / 30SiO 2 -8TiO 2 , the supported nickel-based catalyst described in this embodiment is prepared by the following method, the method comprising: accurately weighing 113.6g of Na 2 CO 3 Place in a 5L three-necked flask, add 1.2L deionized water and heat to dissolve, accurately weigh 30.0g of silicon dioxide and 8.0g of titanium dioxide and add them to the three-necked flask for heating and stirring to obtain a mixture of silicon dioxide, titanium dioxide and Na 2 CO 3 For the mixed slurry composed of the solution, when the temperature rises to 50°C, the pre-prepared aqueous solution containing active components nickel, zinc and magnesium is added dropwise to the above mixed slurry within 2.0 hours to carry out precipitation reaction.
[0068] After the mother liquor was removed by filtration, it was washed with deionized water at room temper...
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Abstract
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