The dry reforming of methane is a promising technology for the abatement CH4 and CO2. Ni–La2O3 catalysts are characterized by their long-term stability (100 h) when tested at full conversion. kinetics over these types has been studied using both power-law Langmuir–Hinshelwood-based approaches. However, studies typically deal with fitting net rate, hence disregarding competing parallel surface processes different possible configurations active surface. In this work, we synthesized catalyst...

A nascent metal–molecule–GNP assembly has been fabricated by immersion of a gold-substrate supported monolayer in solution gold nanoparticles (GNPs).

Monomolecular films of an oligo(phenylene)ethynylene, OPE, derivative [2-isocyano-1,3-dimethylbenzene][4-(4′-aminophenylethynyl)phenylethynyl]gold, 1, containing a gold atom in the molecule backbone have been prepared by Langmuir–Blodgett (LB) method order to study how electrical properties can be modulated monolayers OPEs incorporation center their structures. UV–vis reflection spectra Langmuir 1 at air–water interface reveal strong aurophilic interactions between neighboring molecules that...

Herein trimethylsilane (TMS) is demonstrated to be an efficient binding group suitable for construction of metal-molecule-metal (M-mol-M') junctions, in which one the metal contacts atomically flat gold surface and other a scanning tunnelling microscopy (STM) tip. The molecular component M-mol-M' devices oligomeric phenylene ethynylene (OPE) derivative Me(3)Si C≡C{C(6)H(4)C≡C}(2)C(6)H(4)NH(2), featuring both Me(3)SiC≡C NH(2) contacting groups. This compound can assembled into...

Langmuir films have been fabricated from 4-[4'-(4''-thioacetyl-phenyleneethynylene)-phenyleneethynylene]-aniline (NOPES) after cleavage of the thioacetyl protecting group. Characterization by surface pressure vs area per molecule isotherms and Brewster angle microscopy reveal formation a high quality monolayer at air-water interface. One layer Langmuir-Blodgett (LB) were readily transfer NOPES film onto solid substrates. X-ray photoelectron spectroscopy (XPS), polarization-modulated infrared...

Langmuir and Langmuir–Blodgett films have been fabricated from an acetylene-terminated phenylene–ethynylene oligomer, namely 4-((4-((4-ethynylphenyl)ethynyl)phenyl)ethynyl)benzoic acid (HOPEA). Characterization of the film by surface pressure vs area per molecule isotherms Brewster angle microscopy reveals formation a high quality monolayer at air–water interface. One layer (LB) were readily transfer HOPEA onto solid substrates withdrawal substrate. The deposition mode was Z-type. Quartz...

In this contribution, a novel method for practical uses in the fabrication of top contact electrode metal/organic monolayer/metal device is presented. The procedure involves thermally induced decomposition an organometallic compound, abbreviated as TIDOC method. Monolayers incorporating metal organic compounds (MOCs) [[4‐{(4‐carboxy)ethynyl}phenyl]ethynyl]‐(triphenylphosphine)‐gold, 1, or [1‐isocyano‐4‐methoxybenzene]‐[4‐amino‐phenylethynyl]‐gold, 2, were annealed at moderate temperatures...

Abstract It is expected that molecular electronics, i.e., the use of molecules as critical functional elements in electronic devices, will lead near future to an industrial exploitable novel technology, which open new routes high value-added products. However, despite enormous advances this field several scientific and technological challenges should be surmounted before electronics can implemented market. Among these are fabrication reliable, robust uniform contacts between electrodes,...

This work shows the compositional effect on low-temperature oxidation of crude oils subjected to in situ combustion (ISC). Three heavy crudes were used this study which detailed information molecular species involved ISC was obtained by ultra-high-resolution mass spectrometry. The carried out a mixture 2% oil Ottawa sand an isothermal cell using batch system at 1500 psi three conditions: (i) reservoir temperature each oil, (ii) 180 °C, and (iii) °C heterogeneous catalyst-type β-MnO2....

Abstract The preparation, characterization and electrical properties of Langmuir–Blodgett (LB) films composed a symmetrically substituted oligomeric phenylene ethynylene derivative, namely, 4,4′‐[1,4‐phenylenebis(ethyne‐2,1‐diyl)]dibenzoic acid (OPE2A), are described. Analysis the surface pressure versus area per molecule isotherms Brewster angle microscopy reveal that good‐quality Langmuir (L) can be formed both on pure water basic subphase. Monolayer L were transferred onto solid...

Photoirradiation of monolayers incorporating a silver cation result in metal/monolayer/metal devices.

Abstract Langmuir films of 4‐{[4‐({4‐[(trimethylsilyl)ethynyl]phenyl}ethynyl)phenyl]ethynyl} benzenaminium chloride ([ 1 H ]Cl) undergo anion metathesis when assembled on an aqueous auric acid (HAuCl 4 ) subphase. Subsequent transfer to solid supports gives well‐formed Langmuir–Blodgett (LB) monolayers [ ]AuCl in which the trimethylsilyl group serves as surface contacting group. Photoreduction aurate these leads formation metallic gold nanoislands, were distributed over film. Electrical...

To study the influence of molecular structure on volumetric properties chloroalkanes, densities 1-chloropropane, 2-chloropropane, 1-chlorobutane, 2-chlorobutane, 1-chloro-2-methylpropane, and 2-chloro-2-methylpropane have been measured using a high-pressure high-temperature vibrating tube densimeter system over temperature range from (283.15 to 328.15) K pressure (0.1 65.0) MPa. In case ranges were 318.15) K, 308.15) 323.15) respectively. The experimental satisfactorily correlated with Tait...

The accuracy of the online quantification gaseous effluents from catalytic reactors by mass spectrometry (MS) is rarely addressed researchers despite extensive use technique. MS results are strongly sensitive to both operation conditions reactor and state instrument. Therefore, most studies them as qualitative descriptors performance reaction systems. purpose this work was develop an accurate method for reactors. For purpose, mathematical expressions so-called external internal standard...

There has been a growing interest in applying nanoparticles for enhanced oil recovery. Within this context, there is need to understand the influence of factors involved formulation nanoparticle based emulsions over their properties. In contribution, functionalized SiO2 two different sizes were synthesized and used as surfactants with model oils: squalane vacuum gas oil. Factorial experiments made analyze effects particle size, water content, emulsification energy, non-additive (second third...