Preparation method and application of papermaking sludge activated carbon supported CU-CO catalyst
A technology of CU-CO and papermaking sludge, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc. It can solve the problems of lack of good surface active sites, low furfural conversion rate, low furfuryl alcohol selectivity, etc. problem, achieve the effect of reducing preparation cost, improving selectivity and high catalytic performance
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Embodiment 1
[0028] Preparation method and application of CU-CO catalyst loaded on activated carbon from papermaking sludge:
[0029] The preparation method comprises the following steps:
[0030] (1) Dry the secondary sludge obtained from the paper mill and crush it into a fine powder, pretreat it at 500°C for 2 hours under N2 atmosphere to obtain a pre-carbonized material, and mix the obtained pre-carbonized material with KOH in a mass ratio of 1: 2, mixed and ground evenly, put into an iron crucible, put into a tube furnace, and raise the temperature to 450°C, 600°C, and 800°C at a rate of 5°C / min under N2 atmosphere, and calcined for 1 hour to obtain three kinds of Carbonized material;
[0031] (2) Put the carbonized material in step (1) into a beaker, add deionized water, stir magnetically at room temperature for 6 hours, filter with suction, wash with a large amount of deionized water for several times until the washing liquid is neutral, and place in a vacuum oven for 80 ℃ heat pr...
Embodiment 2
[0036] Preparation method and application of CU-CO catalyst loaded on activated carbon from papermaking sludge:
[0037] The preparation method comprises the following steps:
[0038] (1) Dry and pulverize the secondary sludge obtained from the paper mill into a fine powder, in N 2 Pre-treat at 500°C for 2 hours in the atmosphere to obtain pre-carbonized material, mix and grind the obtained pre-carbonized material and KOH according to the mass ratio (hereinafter referred to as the carbon-alkaline ratio) of 1:1, 1:2 and 1:3, respectively. Put into iron crucible, put into tube furnace, under N 2 Under the atmosphere, the temperature was raised to 600°C at a rate of 5°C / min, and calcined for 1 hour to obtain three kinds of carbonized materials;
[0039] (2) Put the carbonized material in step (1) into a beaker, add deionized water, stir magnetically at room temperature for 6 hours, filter with suction, wash with a large amount of deionized water for several times until the washin...
Embodiment 3
[0044] Preparation method and application of CU-CO catalyst loaded on activated carbon from papermaking sludge:
[0045] The preparation method comprises the following steps:
[0046] (1) Dry and pulverize the secondary sludge obtained from the paper mill into a fine powder, in N 2 Pretreatment at 500°C for 2 hours in the atmosphere to obtain a pre-carbonized material. Mix and grind the obtained pre-carbonized material and KOH at a mass ratio of 1:2, put it into an iron crucible, and put it in a tube furnace. 2 Under the atmosphere, the temperature was raised to 600°C at a rate of 5°C / min, and calcined for 1 hour to obtain a carbonized material;
[0047] (2) Put the carbonized material in step (1) into a beaker, add deionized water, stir magnetically at room temperature for 6 hours, filter with suction, and wash with a large amount of deionized water for several times until the washing liquid is neutral;
[0048] (3) Take 0.9g of the powder from step (2) and put it in 20ml o...
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