Cadmium tellurium cluster molecule [Cd10Te4(SC6H4Me-p)12] and bifunctioanal organic ligand 4,4′-trimethylenedipyridine (tmdp) are joined together through metal–ligand coordination bonds, forming a new inorganic–organic hybrid polymeric cluster {Cd10Te4(SC6H4Me-p)12(tmdp)2}n (1) with a unique ...

Publisher SummaryThis chapter investigates the form and reactivity of the carbonaceous deposit using 13C and 2H transient isotopic labeling techniques in a study of propane dehydrogenation. The activity and selectivity of the Pt/alumina catalyst for propane dehydrogenation is critically dependen...

13C MAS NMR has been performed in situ to investigate the early stages in the conversion of propane to aromatics on Ga-containing ZSM-5 catalysts. Propane 2-13C was used as labelled reactant. The scrambling of the 13C label in the very early stages of the propane conversion, even at 573 K, indic...

13C MAS NMR has been performed in situ to investigate the mechanism of benzene alkylation with propane over GaH-ZSM-5 catalyst. Propane 2-13C was used as a labelled reactant. In order to clarify the main reaction pathways, conversions of the individual starting materials and some of the reaction...

Nearly 500 measurements of the ethane and propane mixing ratios have been made in clean marine air at Baring Head (New Zealand) and Scott Base (Antarctica) between 1991 and 1996. The annual averages of the mixing ratios (285 and 40 ppt) are lower than previously reported for the Southern Hemisph...

The chemical reactions of aldehydes with alcohols to (hemiacetals and poly(oxymethylene) hemiacetals) have an essential influence on the thermodynamic properties and related phenomena like, for example, the vapor + liquid phase equilibrium of such liquid mixtures. This is well known in the liter...

The chemical reactions of aldehydes with alcohols to (hemiacetals and poly(oxymethylene) hemiacetals) have an essential influence on the thermodynamic properties and related phenomena like, for example, the vapor + liquid phase equilibrium of such liquid mixtures. This is well known in the liter...

The activities of the cobalt and zinc-impregnated HZSM-5 catalysts to the non-oxidative conversion of propane (C3) and methane (C1) into aromatic hydrocarbons were evaluated using a fixed-bed microreactor. C1 conversion reached 36.7% and the selectivity of aromatic products reached above 88.7% a...

The bacterial metabolism of propane and the pathway(s) involved are poorly understood, as the relative importance of terminal versus subterminal oxidation of propane, via propan-1-ol and propan-2-ol, respectively, is still unclear. In the case of bacteria, the ability to oxidize propane appears ...

Study regionThis survey was conducted in Lower Saxony/Northern Germany, the major German hydrocarbon province.

The hydride, RhH(CO)(PPh3)3, reacts with the alkynes RC2R (where = CO2Me, CO2Et, CO2H or C6H5), to give stable adducts of the type RCH=CR-Rh-(CO)(PPH3_2. Cleavage of the adducts where R = CO2Me or C6H5 with anhydrous HCl gives dimethyl fumarate and trans-stilbene respectively, indicating that th...

A series of heterogeneous iridium containing catalysts was synthesized by the incipient wetness method. The support material was silica gel. The heterogeneous catalysts were able to dehydrogenate isopentane to isopentene with very high activities and selectivities. The use of external additives ...

Triphenyldeuteriosilane adds to hydridocarbonyltris(triphenylphosphine)iridium(I) to give a-hydrido-b-deuterido-c-triphenylsilyl-d,e-bis(triphenylphosphine)carbonyliridium(I). In the presence of excess Ph3SiD, the latter compound undergoes rapid H/D exchange at the hydride position.

The adsorption structure of 3-chlorothiophene on Cu(111) has been investigated using a combination of normal incidence X-ray standing wavefield absorption (NIXSW) and near edge X-ray absorption fine structure (NEXAFS) spectroscopy. For coverages up to saturation of the chemisorbed layer, the 3-c...

Electrochemical homopolymerization of 3-chlorothiophene (ClT) and copolymerization with 3-methylthiophene (MeT) were carried out via potentiodynamic and galvanostat methods by using ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate, [BMIM]PF6) as the growth medium and the supporting ...

Poly(3-chlorothiophene) (PClT) was electrochemically synthesized on a nanoporous TiO2 surface in the ionic liquid 1-butyl-3-metyllimidazolium hexafluorophosphate by galvanostat method to control charge density of 93 mC cm− 2. Spectroelectrochemical analysis presented that the PClT/TiO2 nanocompo...

The microwave spectra of the normal, Cl(37) and S(34) isotopic species of 3-Chlorothiophene have been investigated in the frequency range 26.4–40 GHz. A first adjustment of the rotational constants was done on the basis of the (B+C) values obtained from the μa-R-type bands of the Cl(35) and Cl...

The valence shell photoelectron spectra of thiophene, 2-chlorothiophene (2-Cl-Th) and 3-chlorothiophene (3-Cl-Th) have been investigated theoretically and experimentally. The third-order algebraic-diagrammatic construction approximation scheme for the one-particle Green’s function has been empl...

Poly(3-chlorothiophene) (PCT) films were synthesized electrochemically by direct oxidation of 3-chlorothiophene (CT) in mixed electrolytes of boron trifluoride diethyl etherate (BFEE) and trifluroacetic acid (TFA). The oxidation potential of 3-chlorothiophene in pure BFEE was measured to be only...

Two-dimensional Raman spectroscopy has been applied to provide the information on charge carriers and thermal stability of a doped poly(3-chlorothiophene) (PCTh) film. The strong spectral intensity at 1420 cm−1 shows that positive polarons are the major charge carriers in doped PCTh. On the othe...