A kind of coal bed gas deoxidation catalyst and its preparation method and application
A technology for deoxidation catalyst and coalbed methane, which is applied in Raney-type catalysts, chemical instruments and methods, and physical/chemical process catalysts, etc. problem, to achieve the effect of less impurities, simple preparation method and high loading capacity
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[0030] Second aspect, the present invention provides the preparation method of above-mentioned catalyst, and this method comprises the following steps:
[0031] (1) The carrier and the active component are mixed and shaped to obtain a catalyst precursor;
[0032] (2) Calcining the catalyst precursor obtained in step (1) under an inert atmosphere.
[0033] In the preparation method of the present invention, for the composition and content of the carrier and the active component, all can refer to the description of the corresponding content above, and will not be repeated here.
[0034] In the preparation method of the present invention, preferably, in step (1), the preparation method of the active component includes: mixing and contacting the metal alloy with an alkaline solution to obtain an activated Raney alloy.
[0035] Preferably, the contact temperature is 25-95°C, more preferably 40-70°C; the contact time is 5min-72h, more preferably 1-48h; the concentration of the alka...
Embodiment 1
[0052] This example is used to illustrate the coal bed gas deoxidation catalyst and its preparation method of the present invention.
[0053] (1) Weigh 100g nickel-aluminum alloy powder, wherein the Ni content is 48% by weight, the aluminum content is 52% by weight, add 1000g of 20% by weight NaOH solution prepared with deionized water, keep the temperature at 70°C, and after 8 hours The solution was filtered to obtain activated Raney alloy powder, which was rinsed with distilled water for 3 times and then spread flat in an ice-bath container for rapid cooling for 24 hours to obtain passivated Raney alloy.
[0054] (2) the Raney alloy of the passivation that 60g superfine silicon dioxide and 60g step (1) obtains is put into kneader, kneading 40min under rotating speed 50 rev / mins, add 50ml 3% by weight in kneading process Nitric acid solution and 50ml distilled water, after kneading, extrude the catalyst precursor (strip, Φ 3mm) with twin-screw extruder.
[0055] (3) Measure ...
Embodiment 2
[0057] This example is used to illustrate the coal bed gas deoxidation catalyst and its preparation method of the present invention.
[0058] (1) Weigh 100g nickel-aluminum alloy powder, wherein the Ni content is 48% by weight, the aluminum content is 52% by weight, add 1000g of 15% by weight KOH solution prepared with deionized water, keep the temperature at 60°C, and after 12 hours The solution was filtered to obtain activated Raney alloy powder, which was rinsed with distilled water for 3 times and then spread flat in an ice-bath container for rapid cooling for 24 hours to obtain passivated Raney alloy.
[0059] (2) the Raney alloy of passivation that 80g superfine silicon dioxide and 60g step (1) obtains is put into kneader, kneading 40min under rotating speed 50 rev / mins, add 50ml 3% by weight in kneading process Nitric acid solution and 50ml distilled water, after kneading, extrude the catalyst precursor (strip, Φ 3mm) with twin-screw extruder.
[0060] (3) Measure 15ml...
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Abstract
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