Platelet-carbon nanofibers supported ruthenium catalyst and preparation method and use thereof
A technology of plate carbon nanofibers and catalysts, which is applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc. Catalytic performance and stability and other issues, to achieve the effect of excellent catalytic activity and selectivity, high conversion rate, and reduced investment cost
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0027] Example 1 , Pretreatment of sheet carbon nanofiber carrier
[0028] Before use, the plate-type carbon nanofiber carrier is washed and purified with hydrochloric acid to remove the growth catalyst ferric tetroxide. The specific process is as follows:
[0029] The carbon nanofibers were washed 5 times in a 40°C water bath with 4 mol / L hydrochloric acid, and each wash was 1 hour. After washing, the plate-type carbon nanofibers were washed with a large amount of secondary distilled water until the washing liquid was neutral. Finally, the washed sheet carbon nanofibers were placed in an oven and dried at 120°C overnight. The dried carbon nanofibers were sieved with a 160-mesh sieve for use.
Embodiment 2
[0030] Example 2 , Preparation of plate-type carbon nanofibers supported Ru catalyst
[0031] Weigh a certain mass of RuCl 3 ·nH 2 O precursor (Ru content is about 37%), dissolved in double distilled water to prepare RuCl 3 In an aqueous solution, the pretreated sheet carbon nanofiber powder in Example 1 was immersed in an equal amount to prepare a sheet carbon nanofiber supported Ru catalyst with a loading of 2-5%. As shown in Table 1, the wet catalyst was dried at room temperature and then dried in an air atmosphere of 80-120° C. for 6-12 hours to obtain a plate-type carbon nanofiber-supported Ru catalyst.
[0032] The above-prepared plate-type carbon nanofiber-supported Ru catalyst was heated at 220-330 ° C, Ar flow rate 300 mL / min, H 2 Reduction was carried out at a flow rate of 100 mL / min for 2-6 hours to obtain a reduction-activated plate-type carbon nanofiber-supported Ru catalyst.
[0033] Table 1
[0034] Ru load (%)
Embodiment 3
[0035] Example 3 , Preparation of plate-type carbon nanofibers supported Ru catalyst
[0036] Weigh 0.8626g RuCl 3 ·nH 2 O precursor (Ru content is about 37%), dissolved in 11 mL of double distilled water to prepare RuCl 3 Aqueous solution, 10.0875g of pretreated sheet carbon nanofiber powder pretreated in Example 1 was immersed in an equal amount to prepare a sheet carbon nanofiber-supported Ru catalyst with a loading of 3%. The wet catalyst was aged at room temperature overnight, and dried at 120 ° C for 12 hours. The dried catalyst is calcined in an air atmosphere at 150-240° C. for 2-5 hours to obtain a plate-type carbon nanofiber-supported Ru catalyst.
[0037] The plate-type carbon nanofiber-supported Ru catalyst prepared above was heated at 300 °C, Ar flow rate 300 mL / min, H 2 Reduction was carried out at a flow rate of 100 mL / min for 5 hours to obtain a reduction-activated plate-type carbon nanofiber-supported Ru catalyst.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More