Ruthenium Catalyst Supported on Multi-Walled Carbon Nanotubes for CO Oxidation

Abstract

This work proposes the synthesis of the 5%wt Ru on MWCNT catalyst and the influence of feed rate and testing variables for low-temperature oxidation affecting the CO 2 yield. Morphology and incorporation of the nanoparticles in carbon nanotubes were investigated by specific surface area (BET method); thermogravimetric analyses (TGA); X-ray diffraction; Raman spectroscopy, transmission electron microscopy (TEM) and XPS. The conversions of CO and O 2 were mostly 100% in groups C1 and C2 (temperature between 200 and 500˚C with low WHSV). In order to assess the effect of mass on catalytic activity, condition C3 was tested at even lower temperatures. In the tested catalyst, high activity (100% CO and O 2 conversion) was observed, keeping it active under reaction conditions, suggesting oxi-reduction of the RuO 2 at surface without affecting the MWCNT but Lewis acid influencing the CO 2 yield.

Developing a cube-like nanocomposite integrated into a polymer network as a highly porous and effective electrospun nanofiber for extracting trace quantities of opioid and analgesic drugs in biological fluids

“…As expected for functionalized multi-walled carbon nanotubes, such peaks are broad and characteristic of amorphous materials. 30 Ultimately, all the above-discussed diffraction patterns are visible in the spectrum of PAN/MOF Zn–Ni–Co OH/MWCNTs, with the difference that the intensity of the peaks is decreased. This decline can be attributed to the dispersion of MOF Zn–Ni–Co OH/MWCNTs in the PAN polymer.…”

High-Performance Nanocellulose-Based Ionic Electroactive Soft Actuators

“…The diffraction peak at 2θ = 22.6 • rises significantly following the addition of high crystallinity MFC in PEDOT/PSS electrode compared with pure PEDOT/PSS. Furthermore, the peak of PEDOT/PSS-MFC doped with MWCNT appears at 2θ = 43.4 • due to the characteristic diffraction peak of MWCNT in the (100) plane [56]. Moreover, the crystallinities of the samples were calculated using the crystallization index (CI): CI = (I max -I min )/I max , where I max is the maximum peak intensity and I min is the minimum peak intensity.…”