The evaluation of copper stearate LB films by Angle-Resolved XPS

Generally, the film quality of octadecanoic acid L-B films may be judged by the link between the attenuation of X-P S peak strength and film thickness. during this paper, the angular resolution X-P S technique is employed to see the quantitative relation of spindle-based carbon to total carbon lC: peak strength () r at completely different lepton emission angles (Delta) r, and disordered powder samples in keeping with the characteristics of copper stearate L-B films. The corresponding relationship between film quality and R was obtained by comparison. a technique for watching film quality by X P S was planned.

Copper stearate powder was ready by reaction of metallic element stearate and copper chloride. completely different layers of L-B stearate films were ready by Y-type hanging methodology. The substrates were glass and vacuum gold-plated films. L-B stearate films were immersed in copper chloride answer. when many hours, the copper stearate L B film was ready, and therefore the e x C e s s ions of Cu, X and lC within the sample were washed away with water. The samples were tested by X-ray spectroscopic analysis victimisation v-G-E-s-c-A-L-A-B-M-K I electronic energy prism spectroscope. The M g-K-a (1 253.6 e-V) was used a s X-ray supply (12 K V fireplace twenty m A). the interior commonplace was C-l and therefore the energy 284.6 e-V.

Copper stearate was applied as a catalyst for the reaction of serious oils. The chemical change result was investigated by hard-hitting differential scanning measuring (HP-DSC) and fast rate measuring (ARC). The results showed that copper stearate considerably improved the reaction performance together with decreasing activation energies, enhancing combustion potency of coke, and reducing induction time and ignition temperature. CuO nanoparticles were unmoved shaped because of the decomposition of copper stearate. to know the chemical change mechanism, the chemical change result of copper stearate was compared with nickel stearate, iron stearate and CuO.

Furthermore, the existed type and transition of copper stearate throughout the reaction method of crude were investigated victimisation thermohydrometric analyzer let alone FTIR-spectrometer (TG-FTIR), HP-DSC, diffraction (XRD), scanning microscopy (SEM) and X-ray negatron spectroscopic analysis (XPS). The results indicated that copper stearate and unmoved shaped CuO nanoparticles compete their chemical change roles as a consistent and heterogenous catalyst in low and high-temperature ranges, severally. it absolutely was believed that the high chemical change activity of CuO may be not solely attributed to those well-known chemical change mechanisms, however additionally advantages from the well-distribution of each copper stearate and unmoved shaped CuO nanoparticles.

The evaluation of copper stearate LB films by Angle-Resolved XPS