Carbon material coated nickel catalyst and method for preparing primary amine compound by using same
A technology of nickel catalyst and carbon material, which is applied in the field of carbon material wrapping nickel catalyst and preparing primary amine compounds by using the same, can solve the problems of unobtained performance materials and the like, and achieve the effects of high reaction selectivity, low cost and simple preparation method.
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Embodiment 1
[0034] A nitrogen-doped carbon material comprising a cobalt catalyst prepared by:
[0035] 1) Using medical absorbent cotton as raw material, soak 0.5g of medical absorbent cotton in 0.1mol / LNi(NO 3 ) 2 solution, ultrasonic 10min to remove air bubbles, and then continue to soak at room temperature for 24h, and then impregnated Ni(NO 3 ) 2 The raw materials are taken out to obtain cotton-Ni(NO 3 ) 2 The composite was dried at 80 °C for 24 h.
[0036] 2) the dry sample that step 1) obtains in H 2 Under atmosphere, heat from room temperature to 400°C at a heating rate of 2°C / min, then calcinate at 400°C for 3 h, after the product is cooled, use 1% O 2 / N 2 Treat for 2 hours, take it out, and grind it into powder to obtain a catalyst whose active ingredient is nickel coated with carbon material, which is recorded as Ni / C catalyst.
[0037] The carbon material coated nickel catalyst prepared in this embodiment is scanned with a transmission electron microscope, and the resu...
Embodiment 2
[0039] Carry out X-ray diffraction analysis to the carbon material wrapped nickel catalyst prepared in embodiment 1, the X-ray diffraction pattern of gained is as follows figure 2 shown, from figure 2It can be seen that the three peaks at 2θ=44.4°, 51.9° and 76.5° are characteristic peaks of nickel nanoparticles, further indicating the existence of nickel nanoparticles.
Embodiment 3
[0041] The active ingredient prepared in Example 1 is that the nickel catalyst wrapped by carbon material is subjected to X-ray photoelectron spectroscopy analysis, and the valence state of nitrogen and carbon is characterized by XPS technology, and the X-ray photoelectron spectroscopy analysis of gained is as follows: image 3 shown.
[0042] XPS was used to examine the oxidation states of surface elements on Ni / C catalysts. XPS spectra confirmed the presence of Ni, C, N and O in the catalyst mainly ( image 3 a) elements. Such as image 3 As shown in b, the C1s XPS spectrum of the Ni / C catalyst shows a main peak at 284.6 eV, corresponding to sp 2 Hybrid graphitic carbon (C=C). Additionally, two other weak peaks with binding energies of 286.1 eV and 288.9 eV were attributed to C–O and O–C=O species, respectively. Such as image 3 As shown in c, the two fitting peaks are located at and The binding energies of the metals are respectively Ni 2p 3 / 2 and Ni 2p 1 / 2 . T...
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