Method for preparing anti-pulverization skeletal nickel catalyst
A technology of skeleton nickel and catalyst, which is applied in the field of preparation of anti-powdering skeleton nickel catalyst, can solve the problems of aggravated catalyst skeleton structure damage and pulverization, increased catalyst consumption cost, and reduced reactivity, etc., and achieves strong anti-powdering performance, mechanical Increased strength, strong chalking resistance and friction impact resistance
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Embodiment 1
[0022] A preparation method of an anti-powdering framework nickel catalyst, comprising the following steps:
[0023] (1) Metal Ni, metal Al and metal Zr are mixed in proportion, and the mass ratio of metal Zr to metal Ni is 0.01:1; the obtained metal mixture is mixed and melted at 1500°C and then subjected to high-pressure atomization to obtain alloy microsphere powder , and use an automatic sieving machine to sieve the alloy powder, and sieve out 80-120 mesh alloy microsphere powder for catalyst activation.
[0024] (2) The alloy microsphere powder obtained in step (1) is activated by immersion in a potassium hydroxide solution with a mass concentration of 25%. The leaching process is protected by nitrogen gas, and the metal salt Zr(NO 3 ) 4 ; Zr(NO 3 ) 4 The mass ratio to the potassium hydroxide solution is 0.1:1; the leached alloy powder is washed with deionized water for several times until weakly alkaline to neutral, and then the skeleton nickel catalyst is obtained, w...
Embodiment 2
[0030] A preparation method of an anti-powdering framework nickel catalyst, comprising the following steps:
[0031] (1) Metal Ni, metal Al and metal Cr are mixed in proportion, and the mass ratio of metal Cr to metal Ni is 0.025:1; the obtained metal mixture is mixed and melted at 2200°C and then subjected to high-pressure atomization to obtain alloy microsphere powder , and use an automatic sieving machine to sieve the alloy powder, and sieve out 100-150 mesh alloy microsphere powder for catalyst activation.
[0032] (2) The alloy microsphere powder obtained in step (1) is activated by immersion in a potassium hydroxide solution with a mass concentration of 35%. The leaching process is protected by argon gas, and metal salt K is added in proportion to the potassium hydroxide solution. 2 CrO 4 , K 2 CrO 4 The mass ratio to the potassium hydroxide solution is 0.2:1; the leached alloy powder is washed with deionized water for several times until it is weakly alkaline to neut...
Embodiment 3
[0035] A preparation method of an anti-powdering framework nickel catalyst, comprising the following steps:
[0036](1) Mix metal Ni, metal Al, and metal Mo in proportion, and the mass ratio of metal Mo to metal Ni is 0.04:1; the resulting metal mixture is mixed and melted at 2000°C and then subjected to high-pressure atomization to obtain alloy microsphere powder , and use an automatic sieving machine to sieve the alloy powder, and sieve out 200-250 mesh alloy microsphere powder for catalyst activation.
[0037] (2) The alloy microsphere powder obtained in step (1) is activated by immersion in potassium hydroxide solution with a mass concentration of 30%. The leaching process is protected by helium gas, and metal salt K is added in proportion to the potassium hydroxide solution. 2 MnO 4 ;K 2 MnO 4 The mass ratio to the potassium hydroxide solution is 0.15:1; the leached alloy powder is washed with deionized water for several times until it is weakly alkaline to neutral, an...
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