Supported catalyst for efficiently catalyzing decomposition of N2O as well as preparation method and application of supported catalyst
A supported catalyst, catalytic decomposition technology, applied in catalyst activation/preparation, physical/chemical process catalyst, separation method, etc., can solve the problems of secondary pollution, poor catalytic activity, complex preparation method, etc. Simple preparation method and high catalytic activity
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[0025] Specifically, the efficient catalytic decomposition of N 2 The preparation method of the loaded catalyst of O may comprise the following steps:
[0026] Step A, carrier preparation: put the pseudo-boehmite in a muffle furnace, raise the temperature to 200°C at 5°C / min and keep the temperature for 2h, then raise the temperature to 550°C at 5°C / min and roast for 4h to obtain the pseudo-boehmite γ-Al calcined with diaspore 2 o 3 carrier. Wherein, the pseudo-boehmite is preferably P-DF-03 ordinary pseudo-boehmite.
[0027] Step B, preparation and impregnation of precursor solution: γ-Al roasted per 5 g of pseudo-boehmite 2 o 3The carrier uses the ratio of 0.76-2.27g copper nitrate, 0.84-2.54g yttrium nitrate, 0-1.50g additive and 3-5mL deionized water. Add copper nitrate, yttrium nitrate, and additive into deionized water, dissolve and Mix evenly to obtain a precursor solution; then the γ-Al of the pseudo-boehmite roasted 2 o 3 The carrier is added into the precurso...
Embodiment 1
[0035] A highly efficient catalytic decomposition of N 2 The supported catalyst of O, its preparation method can comprise the following steps:
[0036] Step a1, adding 1.82g of copper nitrate and 1.35g of yttrium nitrate to 4mL of deionized water, dissolving and mixing uniformly to obtain a precursor solution; then roasting 5g of pseudo-boehmite γ-Al 2 o 3 The carrier was added into the precursor solution, stirred and mixed evenly, and then immersed in a constant temperature water bath at 40° C. for 8 hours to obtain the impregnated precursor.
[0037] Step b1, drying: put the impregnated precursor into a drying oven, and dry at 110° C. for 12 hours to obtain a dried precursor.
[0038] Step c1, roasting: put the dried precursor into a muffle furnace, raise the temperature to 200°C at 5°C / min and keep the temperature constant for 2h, then raise the temperature to 550°C at 5°C / min and roast for 4h to obtain the roasted post catalyst powder.
[0039] Step d1, tabletting and ...
Embodiment 2
[0045] A highly efficient catalytic decomposition of N 2 The supported catalyst of O, its preparation method can comprise the following steps:
[0046] Step a2, adding 1.82g of copper nitrate and 2.25g of yttrium nitrate to 4mL of deionized water, dissolving and mixing uniformly to obtain a precursor solution; then roasting 5g of pseudo-boehmite γ-Al 2 o 3 The carrier was added into the precursor solution, stirred and mixed evenly, and then immersed in a constant temperature water bath at 40° C. for 8 hours to obtain the impregnated precursor.
[0047] Step b2, drying: put the impregnated precursor into a drying oven, and dry at 110° C. for 12 hours to obtain a dried precursor.
[0048] Step c2, roasting: put the dried precursor into a muffle furnace, raise the temperature to 200°C at 5°C / min and keep the temperature constant for 2h, then raise the temperature to 550°C at 5°C / min and roast for 4h to obtain the roasted post catalyst powder.
[0049] Step d2, tabletting and ...
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