Cu-BDC and Cu₂O Derived from Cu-BDC for the Removal and Oxidation of Asphaltenes: A Comparative Study

Abstract

Asphaltenes have been associated with a number of problems in the petroleum industry with regard to the storage, exploration, and transportation of petroleum crude. In the current work, Copper-BenzeneDiCarboxylic acid (Cu-BDC) and Cu-BDC derived metal oxide has been used in the removal and oxidation of the asphaltenes. The MOF derived metal oxide was confirmed to be Cu 2 O. Though adsorption of asphaltenes followed a Langmuir adsorption isotherm in both cases, Cu-BDC was superior to Cu 2 O with an adsorption capacity four times that of the adsorption capacity of Cu 2 O. Also, the kinetic studies showed that the adsorption kinetics followed pseudo second order adsorption kinetics in both cases. From the oxidation studies, it was found that Cu-BDC was unstable beyond 350 °C and had no role in catalyzing the oxidation reaction. The Cu 2 O, however, was successful at catalyzing the asphaltene oxidation reaction and a reduction of 50 °C in oxidation temperature was observed. Hence comparing Cu-BDC with Cu 2 O, MOF was successful in the adsorption reaction but the MOF derived metal oxide had the upper hand in the oxidation reaction.

Impact of Surface Functionalization and Deposition Method on Cu-BDC surMOF Formation, Morphology, Crystallinity, and Stability

“…AFM, ellipsometry, and XRD data indicate that the Cu-BDC surMOF films on MHDA and MUD are thermally stable when placed in a vacuum oven for 1 h at 110 °C. According to the literature reported thermogravimetric analysis data, the Cu-BDC powder is thermally stable up to 300 °C. , Moreover, Cu-BDC surMOF films are stable when immersed in water for 1 h, which is consistent with literature precedent …”

“…According to the literature reported thermogravimetric analysis data, the Cu-BDC powder is thermally stable up to 300 °C. 37,45 Moreover, Cu-BDC surMOF films are stable when immersed in water for 1 h, which is consistent with literature precedent. 36 Deposition of surMOF Films Using the Spray Method.…”

Dense and Uniform Integration of Cu-BDC Particles on a Nafion Film for a High-Performance Hydrogen-Producing Device

“…In Figure 2b, when the temperature is higher than 350 °C, a gradual drop in mass can be observed due to the oxidation degradation of organic linkers. 33 This result proves the outstanding structural stability of the Cu-BDC@Nafion film in a wide temperature range. In addition, the TGA result indicates that the Cu-BDC content is 93.2% in the composite, which is beneficial for the HER process.…”

In Situ Design of a Nanostructured Interface between NiMo and CuO Derived from Metal–Organic Framework for Enhanced Hydrogen Evolution in Alkaline Solutions

“…Figure S5a represents the FT-IR spectra of prepared Cu-BDC and NiMo/Cu-BDC composite. The two sharp characteristic bands at 1386 and 1608 cm –1 are indexed to the symmetric and asymmetric stretching modes of −COOH, respectively. , The peaks at 829 and 887 cm –1 correspond to the out-of-plane and in-plane aromatic C–H bending. , The bands at 755 and 1501 cm –1 are related to the phenyl ring. , The observed peaks at 458 and 567 cm –1 can be considered as the stretching vibration peaks of Cu–O. , The small peak at about 2900 cm –1 is attributed to the aromatic −C–H stretching vibration . The band at 1666 cm –1 is assigned to the carbonyl group in DMF .…”