The reaction pathways for selective oxidation of propane to acrolein on Ce0.1Ag0.3Mo0.5P0.3Ox catalyst were investigated by three methods, (i) steady-state reaction test of the individual oxidation of propane and the probe molecule of possible reaction intermediates, (ii) temperature-programmed ...

The chemistry of low-temperature ignition in propane/air mixtures is analyzed using a recently developed pathway representation of the chemical kinetics. The “Sum Over Histories Representation” allows time-dependent kinetic observables to be computed using an expansion over global chemical pat...

The chemical oxidative copolymerization of aniline (An) with o-alkoxysulfonated anilines, i.e., 1-(o-amino)-propane-3-sulfonic acid (APPrS) and 1-(o-amino)-butane-3-sulfonic acid (APBuS), was a new way to produce water-soluble and self-doped polyaniline derivatives. Poly(An-co-APPrS) and poly(An...

Two novel unsymmetric diamine isomers, 6-amino-2-(4-(4-aminophenoxy)phenyl)-1H-benzimidazole (3p) and 6-amino-2-(3-(4-aminophenoxy)phenyl)-1H-benzimidazole (3 m), were synthesized and employed to react with several aromatic dianhydrides to yield two new series of poly (benzimidazole imide)s (PBI...

In this work, it has been studied the mineralization of aniline, a toxic substance of low biodegradability typically found in many industrial wastewaters, through electro-oxidation using boron doped diamond (BDD) electrodes and photo-oxidation (UV photolysis and UV/H2O2 treatments). It was obser...

Synthesis, characterization, electrochemical studies and ATRA activity of copper complexes with N,N,N′,N′-tetrakis(2-pyridylmethyl)ethylenediamine (TPEN) ligand in the presence of ascorbic acid as a reducing agent were reported. [CuII(TPEN′)Br][Br] (TPEN′ denotes tetracoordinated ligand) cat...

A new facile preparation of furan-2(3H)-ones and 2,3,5-trisubstituted furans by a sequential O-acylation/Wittig(/O-acylation) reaction has been developed. The easily accessible 2-(triphenylphosphoranylidene)-succinic acid 1-ester 3 reacted with acid chloride produced furan-2(3H)-ones 4 in good y...

An efficient, scalable synthetic method of chromeno[3,4-c]pyridine scaffolds through redox-neutral [4 + 2] annulation between coumarinyl ketoxime esters and internal alkynes has been developed using the rhodium(III) catalytic system. The present transformation proceeds under mild conditions, fea...

5-Hydroxy-1-phenyl-1H-pyrazole-3-carboxylic acid was selected as the coupling component to react with three S/N-containing heterocyclic (2-amino-4-chloro-5-formylthiophene-3-carbonitrile, 5-nitrobenzo[c]isothiazol-3- amine, 5-amino-1-ethyl-6-hydroxy-4-methyl-2-oxo-1,2-dihydropyridine-3- carbonit...

Basic 2,4-pentanedionate anion is one of candidates for task-specific ionic liquids as CO2 chemical absorbents. However, there have been few reports on not only CO2 absorption but also physicochemical properties of 2,4-pentanedionate ionic liquids. In this study, we prepared 1-ethyl-3-methylimid...

Di-2,2,2-trifluoro-1-(9-anthryl)ethyl fumarate has been synthesized from fumaric acid and enantiopure Pirkle alcohol. The Diels–Alder reaction with different dienes employing different reaction conditions was assayed, with high diastereomeric excesses obtained. The structure and geometry of the...

A DMAP (4-dimethylaminopyridine) catalyzed cyclization of methyl 2-alkynylbenzimidates has been developed, which affords 3-methoxy-1-methyleneisoindoles with excellent Z-stereoselectivity under mild and transition-metal-free conditions. The (Z)-3-methoxy-1-methyleneisoindole products can be conv...

An organocatalyzed asymmetric sulfa-Michael addition of thiocarboxylic acids to β-trifluoromethyl-α,β-unsaturated ketones with a chiral bifunctional amine-squaramide as the catalyst is presented. A wide range of chiral ketone compounds bearing a sulfur atom and a trifluoromethyl group at the ...

In this study, the Ag/CeO2 catalysts with three different morphologies of ceria nanocubes (CeO2-c), nanorods (CeO2-r) and nano-octahedra (CeO2-o) as supports were prepared by wet impregnation. Various characterizations such as XRD, BET, TEM/HRTEM, HAADF-STEM, XPS and H2-TPR were conducted, and a...

The style and quality of Baijiu is greatly influenced by ethyl acetate. Therefore, improving and controlling the ethyl acetate levels in Baijiu is important. This study investigated ethyl acetate production using a co-culture of Saccharomyces cerevisiae Y3401 and Wickerhamomyces anomalus Y3604. ...

Temperature dependent rate coefficients for the reaction of ethyl butyrate with Cl atom were measured using relative rate (RR) technique. Gas chromatography with Flame Ionization Detector (GC-FID) was used to follow the concentrations of the reactants during experiments. The rate coefficients we...

In this study, biomass-hydrolysate was used for enhancing the bioreduction of ethyl 4-chloro-3-oxobutanoate (COBE). Firstly, dilute alkalic salt pretreatment was attempted to pretreat bamboo shoot shell (BSS). It was found that enzymatic in situ hydrolysis of 20–50 g/L BSS pretreated with dilut...

Organic solvent of low log P value could be used to remove hemicellulose and lignin in bamboo shoot shell (BSS). Combination pretreatment with biocompatible butyl acetate (Log P = 1.7, 10 v%) and dilute sodium acetate (NaAc, 2 wt%) was chosen to pretreat BSS by autoclaving (110 °C, 40 min, pret...

The Japanese herbal medicine Sho-saiko-to-go-keishi-ka-shakuyaku-to (TJ-960) has been demonstrated to have an antioxidant action by quenching free radicals. The effects of TJ-960 on the tocopheroxy radicals generated by an arachidonic acid and lipoxygenase oxidation system were compared with tho...

The objective of the study was to examine the effects of the use of a 5E instructional model on mobile technology to enhance the reasoning ability of lower primary school students (5EMR). The subjects of the study were 30 lower primary school students. The instruments employed in the study consi...