In recent years the household compressor manufacturers have reduced the energy losses inside the compressors resulting in a positive effect on the energy consumption in the cabinets. In the following, N-butane, which is a natural and non ozone depletion refrigerant, is compared to refrigerants presently used in household compressors.

Perylene tetracarboxylic acid bisimides are compounds that show intense visible light absorption and exhibit excellent chemical, photochemical thermal stability. As such, they have been widely used as dyes a range of industrial applications. These also investigated for various applications in aqueous media chromonic liquid crystals: lyotropic systems characterised by the association aromatic me...

Performance of Ni/Al2O3 catalysts (10 wt.% Ni) in steam reforming of n-butane was investigated in terms of n-butane conversion, selectivity to hydrogen and hydrogen yield. The process was carried out in a fixed-bed tubular reactor at 650 °C and atmospheric pressure. The volumetric flow rates of n-butane and steam were 0.1 mL/min and 0.6 mL/min, respectively. The catalysts were prepared by preci...

Eight new Zn(II) coordination polymers based on flexible 1,4-di(1H-imidazol-1-yl)butane and different dicarboxylates, [Zn(dimb)(suc)·2DMF]n (1), [Zn(dimb)(mbda)·3H2O]n (2), [Zn(dimb)(adip)·DMF·2H2O]n (3), [Zn(dimb)(pma)·2.5H2O]n (4), [Zn2(dimb)(tha)2(H2O)]n (5), [Zn(dimb)(chda)·2H2O]n (6), [Zn(dimb)(obda)·DMF]n (7), [Zn(dimb)(tdga)·CH3OH]n (8) (dimb = 1,4-di(1H-imidazol-1-yl)butane, H2suc = suc...

Two synthetic strategies for the generation of delta-substituted pyranoid sugar amino acids (SAAs) are evaluated. The first employs chiral nonracemic tert-butane sulfinamides as key reagents. Regardless of the stereochemistry of the applied sulfinamide, the product formed has a stereochemistry resembling that of a d amino acid at C7. Direct Grignard reaction on formyl-tetra-O-benzyl-beta-D-C-gl...

Markov state models parametrized using molecular simulation data are powerful tools for the investigation of conformational changes in biomolecules and in recent years have gained increasing popularity. However, a Markov state model is an approximation to the true dynamics of the complete system. We show how Markov state models are derived from the generalized Liouville equation identifying the...

The asymmetric unit of the title compound, 2C(12)H(8)N(2)·C(8)H(10)O(8)·2H(2)O, contains one 1,10-phenanthroline mol-ecule, one half-mol-ecule of butane-1,2,3,4-tetra-carb-oxy-lic acid (H(4)BTC) and a water mol-ecule, with the complete tetra-acid generated by crystallographic inversion symmetry. Inter-molecular O-H⋯O hydrogen bonds and π-π stacking inter-actions [centroid-centroid distances = 3...