Nanoscale Pd/C catalyst as well as preparation method and application thereof
A catalyst, nano-scale technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of poor reproducibility, unsuitable for industrial-scale large-scale catalyst preparation and production, complicated preparation steps problems, to achieve the effect of wide dehydrogenation range, good catalyst reproducibility, simple and effective steps
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0017] Weigh 32mg of tetrabutylammonium bromide, 5ml of cyclopentane, and 15ml of tetrahydrofuran to make a solvent polarity control agent; weigh 24mg of PdCl 2 Dissolve in 20ml tetrahydrofuran solution to make Pd salt solution; measure 10ml solvent polarity control agent and mix with 20ml Pd salt solution to obtain impregnation solution; soak 5g activated carbon in 50ml methanol solution for 0.5h, filter and place activated carbon in impregnation liquid, sealed and stirred for 16 hours, and then filtered to obtain the catalyst precursor; the catalyst precursor was placed in an oven and dried at 80° C. for 6 hours to obtain the catalyst. Wherein, the mass percentage of Pd in the catalyst as measured by ICP is 0.31%. Its precious metal dispersion and average particle size are listed in Table 1
[0018] 1 g of catalyst was loaded into a fixed-bed reactor for evaluation experiments. The CO content in the feed gas is 98.5%, H 2 The content is 1.6%, the added O 2 with H 2 Th...
Embodiment 2
[0020] With the preparation process of Example 1, the difference is that 10ml cyclohexane is used instead of 5ml cyclopentane and 15ml tetrahydrofuran to form a solvent polarity control agent, the addition of tetrabutylammonium bromide is 64mg, and ICP records that Pd accounts for The mass percentage of the catalyst is 0.33%. Its precious metal dispersion and average particle size are listed in Table 1.
[0021] With the evaluation conditions of Example 1, the catalyst evaluation results are shown in Table 2.
Embodiment 3
[0023] The same as the preparation process of Example 1, the difference is that 3ml cycloheptane is used instead of 5ml cyclopentane and 37ml tetrahydrofuran to form a solvent polarity control agent, the addition of tetrabutylammonium bromide is 12mg, ICP records that Pd accounts for The mass percentage of the catalyst is 0.28%. Its precious metal dispersion and average particle size are listed in Table 1.
[0024] With the evaluation conditions of Example 1, the catalyst evaluation results are shown in Table 2.
PUM
| Property | Measurement | Unit |
|---|---|---|
| size | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More