Selective hydrogenation catalyst as well as preparation method and application thereof
A hydrogenation catalyst and selective technology, which can be used in catalyst activation/preparation, chemical instruments and methods, preparation of organic compounds, etc., and can solve the problems of difficult control of process parameters in the preparation process, poor uniformity of catalyst activity, and difficulty in disposal of waste catalysts. , to achieve low cost, high catalytic activity and stability, and good economic benefits for enterprises
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Embodiment 1
[0026] The components of the selective hydrogenation catalyst of this embodiment and their contents (in terms of the total mass of the catalyst) are shown in the table below:
[0027] Element Rh Ce Cu Ni Zr mn carrier content% 0.40 0.05 0.10 0.10 0.05 0.10 99.20
[0028] The preparation method of the present embodiment selective hydrogenation catalyst, concrete process is as follows:
[0029] 1) Weigh γ-Al 2 o 3 Put 10.0 g of the carrier in a beaker, and under stirring conditions, add deionized water dropwise until the carrier in the beaker is just absorbed and saturated, record the weight of deionized water consumed as 5.50 g, that is, the saturated water absorption rate X of the carrier is 0.55;
[0030] 2) Take 1.132g Rh(NO 3 ) 3 The solution was dissolved in 3.0g deionized water, heated to 30°C in a water bath, stirred for 30min, and marked as solution A;
[0031] 3) Take 0.031g Ce(NO 3 ) 3 ·6H 2 O, 0.077g Cu(NO 3 ) 2 ·3H 2 ...
Embodiment 2
[0035] The components of the selective hydrogenation catalyst of this embodiment and their contents (in terms of the total mass of the catalyst) are shown in the table below:
[0036] Element Pt PD Ce Ni Zr co carrier content% 0.10 0.20 0.10 0.10 0.10 0.05 99.35
[0037] The preparation method of the present embodiment selective hydrogenation catalyst, concrete process is as follows:
[0038] 1) Weigh γ-Al 2 o 3 Put 10.0g of the mixed carrier with titanium dioxide in a beaker, and under stirring conditions, drop deionized water until the carrier in the beaker is just adsorbed and saturated, record the weight of deionized water consumed as 4.80g, that is, the saturated water absorption rate of the carrier X is 0.48;
[0039] 2) Take 0.165g Pt(NO 3 ) 2 solution, 0.436g Pd(NO 3 ) 2 The solution was dissolved in 2.0g deionized water, heated to 30°C in a water bath, stirred for 30min, and marked as solution A;
[0040] 3) Take 0.062g Ce...
Embodiment 3
[0044] The components of the selective hydrogenation catalyst of this embodiment and their contents (in terms of the total mass of the catalyst) are shown in the table below:
[0045] Element Pt Ru Cu La Fe mn carrier content% 0.30 0.10 0.20 0.10 0.10 0.10 99.10
[0046] The preparation method of the present embodiment selective hydrogenation catalyst, concrete process is as follows:
[0047] 1) Weigh 10.0g of activated carbon carrier and place it in a beaker. Under stirring conditions, drop deionized water until the carrier in the beaker is just saturated. Record the weight of deionized water consumed as 5.0g, which is the saturated water absorption rate of the carrier. X is 0.50;
[0048] 2) Take 0.495g Pt(NO 3 ) 2 solution, 0.316g Ru(NO)(NO 3 ) 3 The solution was dissolved in 3.0g deionized water, heated to 30°C in a water bath, stirred for 30min, and marked as solution A;
[0049] 3) Take 0.154g Cu(NO 3 ) 2 ·3H 2 O, 0.063g La...
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